Cyclone Body Research Articles

Enhancing the sub-micrometer performance of a uniflow cyclone separator using a built-in stainless steel mesh filter

Although the uniflow cyclone separator has low pressure drop and high collection efficiency compared to other existing cyclone separators, it still has room to improve its collection efficiency of submicron particles. For this reason, we present a new uniflow cyclone separator with an installed mesh filter called the MFUC. The MFUC cyclone body is not made of a solid wall but a stainless steel mesh with porosity. Our research newly revealed that the pressure gradient in the radial direction at the front region of the mesh filter is reversed in the rear region, which can help to remove sub-micrometer particles which are difficult to collect using a basic cyclone separator. The measured MFUC performance showed the synergetic effect of filtration and inertial separation for the removal of fine particles. As the inlet flow rate increases, the inertial separation becomes more effective than filtration. In addition, the cut-off diameter of the MFUC was 0.83 μm at 500 lpm, which is 56.6 % smaller than that of the basic cyclone separator.

Performance Evaluation of Square Cyclone Separator with Cone Geometry Variations

Rapid industrial development with intensive operations increases exhaust emissions that are polluting the environment and human health. Efforts to overcome the problem are urgent to be realized, one of which is by using a particle separator such as a cyclone separator. Along with that, the design of a cyclone separator with the best performance is very important. Therefore, it is necessary to innovate and analyze the design of the cyclone separator by varying the cone geometry of the cyclone. This study aimed to determine the best square cyclone separator among square cyclone separators with various cone geometries, including single cone, dual inverse cone 1, and dual inverse cone 2. It was conducted by Computational Fluid Dynamics (CFD) simulation and experiments and then continued by comparing pre-determined aspects comprising pressure drop, collection efficiency, static pressure contours, tangential velocity contours in the cyclone body, tangential velocity vectors in the cone geometry, and tangential velocity vectors at the cyclone inlet. The single cone is the best among all cone variations since it fulfils more aspects better than the dual inverse cones, namely: dominantly lowest pressure drop of 188.5 Pa, static pressure contour of 10.42 Pa, tangential velocity contour of 3.06 m/s, flow direction of the tangential velocity vector in the cyclone geometry was at the centre of the bin, and flow direction of the tangential velocity vector at the cyclone inlet was parallel.

A numerical assessment to select the optimal geometry of a specific cyclone separator of wheat flour processing

AbstractIn this study, the effect of the cyclone body height on the flow field within the specific cyclone and also on the performance parameters of the cyclone has been investigated. The five heights of the cyclone as various configurations were I = 600, II = 675, III = 750, IV = 825, and V = 900 mm. A pressure‐based solver was used and the turbulent Reynolds stress model was utilized to simulate the flow. Then, the Lagrangian discrete phase model was used to simulate the solid phase. As the height of the cyclone increases, the pressure drop decreases. Also, the best separation efficiency and the highest particle velocity value were achieved at a height of 750 mm. The maximum values of turbulence intensity, skin friction coefficient, and strain rate were obtained as negative components of cyclone performance at the cyclone body height of 900 mm. The height of 750 mm was recognized as the best height of the cyclone's body.Practical ApplicationsApplying numerical simulation in food processing is a novel method to minimize equipment construction and reach a high‐accuracy design. Computational fluid dynamics can provide an accurate and detailed flow analysis in the cyclone separators utilized in the flour processing plant. The dimensional analysis can help the researchers to achieve the optimum design and enhance the cyclone performance by reducing pressure drop and increasing separation efficiency. Also, the maintenance cost would be significantly reduced due to detecting the critical sections and strengthening them.

A Preliminary Numerical Study on the Performance of Cyclone Separators in Supercritical CO2 Solar Power Plants

A combined approach of computational fluid dynamics, the discrete phase model, and the wall erosion model was used to numerically investigate the hydrodynamics, separation efficiency, and erosion rate in cyclone separators for s-CO2 solar power plants. Moreover, the results were compared with those for air and CO2 as carrier phases. The experimental data from the literature were used to validate the numerical model, and it was observed that the simulated gas velocities and wall erosion rate accurately aligned with the experimental measurements. The numerical results reveal that s-CO2 had the largest tangential velocity compared to the other two media; its area-weighted axial velocity of upward flow was the lowest in the middle part of the cyclone body, and varied considerably in the bottom region of the conical section. The particles were all collected at the bottom surface of air and CO2, but the separation efficiency of s-CO2 was 81.51%, due to the poor distribution of the vortex and short circuit. Finally, the erosion rate distribution and averaged surface erosion rate were also analyzed for the three carrier phases.

Numerical modeling of body shape effect on the performance of a square cyclone separator

This study aims to determine the effect of a square cyclone body shape on the performance of a square cyclone separator. To achieve this goal, four square cyclone separators with square lengths 0, 1, 2, and 3 times the hydraulic diameter of the cyclone body were considered. The simulation of the gas-solid flow was carried out using the Euler-Lagrange approach, while the gas flow was modeled by Navier–Stokes equations and the Reynolds stress turbulent model (RSTM), and the injected solid particle was solved using the Newton equation. The pressure drop, separation efficiency, and flow pattern were investigated to evaluate the performance of square cyclone separators. The results revealed that the pressure drop and separation efficiency decreased as the relative square length increased. In the case with a lower relative square length, the vortex core penetration is less than that in the other cases, which leads to a decrease in the entrainment phenomena and separation efficiency enhancement. At an inlet velocity of 16 m/s, an increase in the relative square length from 0 to 3 reduced the pressure drop by approximately 35%. At an inlet velocity of 24 m/s and a particle diameter of 8 µm, with an increase in the relative square length from 0 to 3, the efficiency decreased from 88.7 to 77.4%.

The impact of cylinder vortex stabilizer on fluctuating turbulence characteristics of a cyclone separator based on Large Eddy Simulation

The main purpose of present study is to comprehensively clarify the impact of cylinder vortex stabilizer on fluctuating turbulence structure of a Stairmand cyclone separator on basis of Large Eddy Simulation. The cylinder vortex stabilizer is easy and could be applied to any existing cyclone model without any major replacement. This novel modification in cyclone body is considered to alleviate the negative effect of entrainment of particles from the ash hopper and swing of the vortex end in swirling flow. The numerical simulations were conducted based on Stairmand cyclone separator and three new models with variation of vortex stabilizer length and diameter. The results showed that the cylinder vortex stabilizer could enhance flow instability and improve fluctuating turbulence structure to some extent. It is confirmed that cylinder vortex stabilizer could significantly reduce the tangential velocity in the inner quasi-forced vortex region of the cyclones. Comparing with Stairmand cyclone, the swirling first and second peak frequency of cyclone model with vortex stabilizer (Length L/D: 6.5, diameter d/D: 0.12) have been confirmed to get considerable reduction of 11.54% and 10.86%, respectively. This modified cyclone model is comparatively better for enhancement of flow stability, providing about 18.4% maximum reduction of normalized flow angle, 24.8% of rotational kinetic energy in dust collector and 14.2% in the main body of cyclone.

ПРОМИСЛОВИЙ ЦИКЛОННО-РОТАЦІЙНИЙ ПИЛОВЛОВЛЮВАЧ

Cyclone equipment is easy to manufacture and operate, versatile and economical, but its main drawback is the inability to capture finely dispersed dust. The article discusses the most important characteristics of the highly efficient industrial cyclonic rotary dust collector developed by us. The apparatus implements the principle of two-stage separation of heterogeneous dust-gas systems in a centrifugal field. In the first stage, working on the principle of a cyclone, and in the second - working on the principle of a rotary dust collector. During operation of the apparatus, a higher pressure on the periphery of the rotating part returns a concentrated dusty flow with a low gas flow to the cyclone part. Formed by a gap, between the cyclone body and the dividing cone, a closed circuit connects the output and input of the cyclone-rotational dust collector to each other. There is a negative feedback - an effective control mechanism for such complex probabilistic systems as gas heterogeneous curvilinear flows. Negative feedback stabilizes the processes occurring in such flows. The energy of the electric motor is used in the cyclone-rotational dust collector for the movement of dusty gas, concentration, coagulation of fine dust, its return from the rotary to the cyclone zone, dispersion and capture, with the aim of saving energy and material resources. The main task of the theory of centrifugal separation of dusty flows is to find the minimum diameter of a particle that has a practically perceptible relative radial velocity. Known deterministic models of centrifugal separation are either too simple and ignore many factors that determine the process, or in attempts to account for them are too cumbersome and difficult to solve, although they are also not free from various assumptions and limitations. The stochastic model takes into account the integral set of various influences on the radial drift of the Stokes particle from the center to the periphery of the swirling flow. The paper presents the results of the study of the structure of the three-dimensional two-phase gas flow with highly dispersed inclusions in cyclonic-rotary dust collectors using 3D geometric models with the aim of visualizing these flows using computer graphics methods. Numerical studies were carried out using the k-e model of turbulence with scaled wall functions.

Multi‐object optimization study on the performance of gas cyclones based on heterogeneous condensation and turbulent agglomeration

AbstractImproving the separation efficiency of fine particles becomes more and more critical as environmental pollution aggravates. This study aims to investigate the effects of four key parameters on the performance of gas cyclones, including cyclone body height, particle concentration, initial supersaturation degree, and inlet temperature. Then, the two‐way coupling numerical model, in which is the process of heterogeneous condensation and agglomeration for insoluble fine particles, was achieved by user defined function. On this basis, the response surface analysis method and multi‐objective genetic algorithm were adopted to optimize the cyclone. The results show that when the particle concentration is less than 1000 mg/m3, the separation efficiency can reach above 95%. The initial supersaturation degree has the greatest effect on the separation efficiency and vapour consumption rate, while the cyclone body height is the most critical factor on the pressure drop. As the particle concentration increases, the separation efficiency decreases at first and then keeps almost stable. With the increase of inlet temperature, the separation efficiency is enhanced, and the pressure drop reduces. These research results can provide important guidance for the optimization and engineering application of this technology.

Effect of a laminarizer installed in the vortex finder of the Stairmand cyclone

This study is performed to numerically investigate the effect of installing a laminarizer in vortex finder on cyclone separator. The Reynolds stress model (RSM) and discrete phase model (DPM) are respectively used to simulate the gas flow and particle flow. The model is validated by good agreement between the numerical and experimental results. The results show that the laminarizer can straighten the swirling flow in the vortex finder, and convert the dynamic pressure of the swirling flow into static pressure. Pressure drop of the cyclone can be reduced by 15.47 % while separation efficiency is comparable with that of the conventional cyclone. Based on the Q criterion, it is found that the laminarizer also breaks the vortex in the vortex finder, which elucidate the mechanisms of straightening the swirling flow from the perspective of vortex. The laminarizer position S has an important influence on the tangential velocity in the cyclone body. The increase in S will lead to an increase in separation efficiency and pressure drop. With the increase of laminarizer length L and flow split number N, the gas-flow rotation is further reduced.

ИЗУЧЕНИЕ ВЛИЯНИЯ СКОРОСТИ ВХОДЯЩЕГО ПОТОКА НА ЭФФЕКТИВНОСТЬ ЦИКЛОНОВ

A study into the influence of the speed of the incoming dust flow and a size of the inlet of a cyclone on its performance. The structure of the flow field has been investigated by calculations made using the Reynolds Stress Turbulence Model (MTNR) for a cyclone separator. The findings show that the maximum tangential velocity in the cyclone decreases when the entry size to the cyclone increases. No acceleration occurs within the cyclone body (maximum tangential velocity is almost constant throughout the cyclone). Increased size of the cyclone inlet reduces the drop of pressure. The cyclone's cutoff diameter increases with the cyclone's inlet size (therefore, the overall efficiency of the cyclone decreases due to a low vortex strength). The effect of altering the entry’s width is more significant than its height, especially for the cut-off diameter. The influence of simulations of velocity fluctuation on prediction of collection efficiency of cyclone separators has been numerically investigated using MTNR and large eddy simulation (MBV). The Euler-Lagrange modeling approach was used by Solidworks Flow Simulation to simulate 3D non-stationary turbulent gas and solid flows in the high-efficiency Starmand cyclone. The simulation results have been compared with available reference data. An analysis of the findings shows that the MTNR and MBV could adequately predict the mean flow field. The study shows that the (MBV) performs well in predicting fluctuating flow field and capture efficiency for each particle size. The results show that prediction of collection efficiency, especially for fine particles, is greatly influenced by simulation of velocity fluctuations in cyclones.

CFD Investigations of Cyclone Separators with Different Cone Heights and Shapes

Due to the great achievements in the field of optimization of the design of cyclone separators, non-standard solutions are sought to increase their performance. Therefore, in this study, we consider the impact of different cone and cylinder height variants on the performance of cyclone separators. Additionally, we propose non-standard shapes for these sections. Three different heights: H/D = 0.5, 1.0, and 1.5, with D (the main cyclone body diameter), are analyzed. Since the cone is one of the most important geometrical entities, three different shapes viz. a straight (conventional) profile, a concave profile as well as a convex profile are also taken into account. Cyclone performance is rated at three different inlet velocities viz. Uin = 10 m/s, 15 m/s, and 20 m/s. Hence, a total of 27 simulations have been performed using the Reynolds stress model. It becomes apparent from the present study that the pressure loss is lowest in the convex variant, whereas the separation efficiency is better in the conventional design. Furthermore, an increase in the length of the cylindrical section reduces pressure drop with a mild decrease in the collection efficiency in all variants.

Dense medium separator performance evaluation based on 3D Eulerian-Eulerian multiphase CFD simulation

ABSTRACT The present paper enumerates a CFD model developed for a 76-mm Dense Medium Cyclone (DMC) using Ansys Fluent Software to gain insights into the separation of particles according to their size and density. The simulation used in this paper includes Reynolds stress model to predict the turbulence inside the cyclone body. An Eulerian–Eulerian multiphase CFD model was applied to model a number of physical aspects such as the separation of coal particles and the segregation of magnetite media solids. The experimental results generated in a laboratory-scale DMC were used for the validation purpose, and the predicted results of CFD have been validated for the flow splits of water, magnetite, and coal. The simulation results obtained from the Eulerian–Eulerian multiphase model reveal that the prediction is in good agreement with experimental results and match reasonably well in terms of the mass flow rates of water, magnetite, and coal. Furthermore, the partition curve of the DMC when mapped for the separation of −3.0 + 0.50 mm size also showed to be in agreement with the experimentally obtained curves. The gravity of cut (SG50) has also been predicted by the Eulerian–Eulerian multiphase CFD model and was found to be in the vicinity of observed experimental value of SG50.

Innovation of vortex finder geometry (tapered in-cylinder out) and additional cooling of body cyclone on velocity flow field, performance, and heat transfer of cyclone separator

This paper studies numerical analysis about the effect of the vortex finder (Tapered in-Cylinder out) geometric innovation in a cyclone separator. Four variations of the length of the vortex finder 0.5 Dc, 0.75 Dc, Dc, and 1.25 Dc will be simulated under cooling and without cooling conditions on the velocity flow field, cyclone performance, temperature distribution, and heat transfer. The RSM turbulence model is used to simulate fluid flow. The Eulerian-Lagrangian approach was chosen to predict the phase movement of the particles. The trajectories of particles in the flow are tracked individually using the DPM method. The cooling model is applied assuming a constant temperature on the surface of the cyclone body. The simulation results show similar trends both with experimental studies and numerical simulations. The application of additional cooling to the cyclone, reduced the pressure drop up to 13%. The cyclone collection efficiency showed a non-significant increase but most of the particles collected were drier due to the increasing heat transfer 15–25% in any cases of variation.

Exploration of modified cyclone separator for the enhanced recovery of inhalable spray dried cubosomal powder intended to be used for lung delivery

The study was conducted with the aim to fabricate a cyclone separator capable of providing cubosomal powder with enhanced recovery, uniform size, and high aerosolization efficiency. For that purpose, Classical cyclone design (CCD) and Texas cyclone design (TCD) process parameters (number of effective turns (Ne), inlet air velocity (Vi), pressure drop (ΔP), and cut point diameter (dpc)) were utilized to obtained five geometrical parameters (length of cyclone body (Lb), length of cyclone cone (Lc), height (H) and width (W) of inlet section and air exit diameter (De)) of modified cyclone (type XVII). The design analysis predicted the lowest dpc of 1.5 μm along with an enhanced amount of cubosomal powder collection. The Design of Experiment (DoE) and Signal to Noise (S/N) ratio were employed to evaluate the effect of formulation, process parameter, and cyclone design on device removal efficiency, aerosolization efficiency, fine particle fraction, and yield of cubosomal powder. The modified cyclone provides 1.8 fold enhanced cubosomal powder recovery, which has been associated with increased ΔP inside the cyclone separator. The optimized inhalable spray-dried cubosomal powder possess a sufficient geometrical diameter (dG) (3.9 ± 0.25 μm) and aerodynamic diameter (dA) (2.04 ± 0.15 μm) to deliver formulation to deeper lung tissues. Overall, the findings pointed towards the industrial benefits of developed cyclone design as it experimentally provides enhanced recovery of cubosomal powder in the size range of 1–5 μm with its desirable aerosolization properties.

Effects of the inlet duct length on the flow field and performance of a cyclone separator with a contracted inlet duct

The inlet duct length may affect the gas flow field and performance of a cyclone separator with a contracted inlet duct. In this study, a numerical simulation using the Eulerian-Lagrangian approach with a one-way coupling method was conducted to evaluate the gas flow field and separation efficiency of the cyclone separators with contracted inlet ducts of different lengths. The simulation results indicated that increasing the inlet duct length led to higher gas tangential velocity in the cyclone body. The effect of the inlet duct length on gas axial velocity was inferior to that on gas tangential velocity. A longer inlet duct reduced both the pressure drop and the separation efficiency. The reductions of the expansion loss at the inlet of the cylinder and friction loss inside the cyclone body contributed the most reduction of the pressure drop as the inlet duct length increased. Generally, when the inlet duct was 1.5 times longer than the cylinder diameter, the effect of inlet duct length on the gas flow field and performance of a cyclone separator became slight.

Justification of the layout and operating mode of a vortex-dedusting device as part of heat recovery units in agro-industrial facilities

Annotation Purpose. Determination of the efficiency of functioning of the centrifugal dust collector of exhaust ventilation air when supplied to the heat exchanger, and the parameters of the dedusting device. Methods. The specificity of the problem being solved determines the use of an analytical method for research, which allows us to consider the general scheme of the process flow, without specifying the dimensional characteristics. The research technique involves the compilation of differential equations of the motion of particles in a swirling air flow and determination of the trajectory of their movement. Results. The possibility and feasibility of using a direct-flow cyclone for dedusting ventilation emissions from an industrial premises before feeding to a heat recovery unit is considered. To assess the efficiency of dust cleaning, a mathematical description of the dynamics of motion of dust particles in a vortex flow of a direct-flow cyclone has been formulated. Analytical dependences are obtained, according to which the trajectories of motion of dust particles in projections onto the transverse and longitudinal planes of the cyclone body are calculated. The formulas obtained make it possible to determine the design and operating parameters of the dedusting device and to estimate the size of particles, the capture of which is provided by the proposed device. Conclusions 1. A rational layout diagram of a heat recovery system for ventilation air of industrial facilities has been determined, which in series connects a once-through cyclone with an impeller and a tube-plate heat exchanger. 2. A mathematical description of the dynamics of the motion of dust particles in a vortex flow has been formulated and investigated, and calculation formulas have been obtained for calculating the trajectories of motion of particles, which are used to determine the design and operating parameters of a direct-flow dust cleaner. Keywords: ventilation emissions, heat exchanger, dedusting of the air flow, direct-flow cyclone, particle trajectories.

Configuration of a newly optimized multi-cyclones unit as a fine particulate emission separator in air pollution control

Multi-cyclones separator, which consists of many miniature cyclones, works in the same principle as single cyclone in separation of particulate matter from flue gas. However, multi-cyclone is able to attain higher collection efficiency and concurrently avoid rapid increasing of pressure drop due to the usage of small diameter cyclone. The studies on multi-cyclones are very limited and lacking especially on its design configurations due to its confidentiality and commercial reason. Thus, a configuration of a newly optimized multi-cyclone unit named as MR-deDuster is discussed and assessed in this study. Six dimensions considered in the study include diameter of cyclone (D), diameter of vortex finder (De), length of cyclone body (Lb), length of cyclone cone (Lc), length of vortex finder (S), and diameter of dust outlet (Dd). The theoretical background of the unit was developed based on the modifications of established design equations available in literatures. The selection of the new dimension and the actual size of the unit were based on two main criteria (the performance of the unit based on its cut-diameter and the ratio of axial dimensions). The predicted cut-diameter and pressure drop of the selected dimension was 1.7 µm and 86 mm of water, respectively. Meanwhile, the optimum axial ratios of the final design were Lb/D = 1.6, S/D = 1, and Lb-S/D = 0.7, with respect to the diameter of the cyclone.

Теорія і практика використання циклонів на деревообробних підприємствах

Теоретично обґрунтовано доцільність зміни геометричних розмірів циклона та на цій основі розроблено нову конструкцію пиловловлювача. Наведено характеристику основним типам циклонів, що використовуються у деревообробній галузі. Проаналізовано наявні підходи до математичного моделювання аеродинамічних процесів у циклонах. Наведено нову математичну модель руху запиленого повітря всередині сепаратора, яка ґрунтується на сумісному розгляді рівнянь Нав'є-Стокса для в'язкої стисливої рідини (газу), рівняння нерозривності, рівнянь стану і рівнянь балансу тепла. Для циклону типу ЦН-15 записано початкові і граничні умови. Розв'язано отриману повну систему диференціальних рівнянь у частинних похідних та досліджено вплив геометричних розмірів сепаратора на експлуатаційні показники апарату. Числовий аналіз задачі проведено для циклона з фіксованими геометричними параметрами. Досліджено залежність гідравлічного опору циклона від таких параметрів, як висота циліндричної частини, глибина занурення вихлопної труби, висота конічної частини, діаметр вихлопної труби, діаметр пиловипускного патрубка. Досліджено розподіл статичного тиску всередині корпуса циклона. Під час досліджень розглядали різні діаметри пиловипускного отвору, а також різні значення висоти циліндричної частини. Досліджено поле швидкостей запиленого потоку всередині пиловловлювача, зокрема, її тангенціальна та осьова складові. На основі розробленої математичної моделі побудовано ізолінії швидкості потоку у характерних площинах, які проходять через вертикальну вісь циклона. Для підтвердження адекватності запропонованої математичної моделі результати числового аналізу підтверджено експериментальними дослідженнями. Для цього розроблено конструкцію експериментального стенда для проведення досліджень, у якій передбачено можливість зміни висоти циліндричної частини, глибини занурення вихлопної труби, площі поперечного перерізу вихлопної труби та використання різних типів конічної частини бункерів.

On the substantiation of the effectiveness of air-centrifugal separation and dust cleaning of seed heap of herbs after the grate device

The agrobiological and physico-mechanical properties of leguminous seed plants do not allow them to be harvested without loss exclusively by combine technologies. One way to increase the productivity of the seed production process is to include stationary machines in the assembly technology for wiping and separating seed heaps. Combining these important operations with one machine will further increase the efficiency of legume seed production technologies. This work is devoted to considering ways to increase the efficiency of air-centrifugal separation and dust cleaning seed heaps. A review of recent studies and publications has shown that there is a sufficient methodological basis for determining the parameters of the process of separation of the heap and purification of the exhaust air. An analysis of the publications made it possible to determine the purpose of the research, which is to increase the efficiency of the grater-separation unit by substantiating its scheme and the method of theoretical determination of the parameters of the separation process. According to the results of previous studies, a structural scheme of the grater-separating device is proposed. The main elements of the block are a grater device, which consists of a motionless and movable corrugated discs of the separating device with separate channels for the exit of seeds, straw part of the heap, air. To increase the efficiency of the cleaning process, a blade swirler and a louvre nozzle are placed in the separating device, which provide the air flow with rotational movement around the axis of the cyclone body. In theoretical studies of the motion of particles in a rotational air flow, the simplified assumption was adopted: the particles are spherical, do not deform, and do not interact with each other, the inertia force is directed along the radius of the cyclonic chamber, the tangential and axial components of the particle velocity are equal to the corresponding components of the air velocity, and the particle resistance force determined by the Stokes law, the force of attraction is much less than the centrifugal force, so we neglect it. The obtained formulas allow one to approximately determine the parameters of the cyclone device that will ensure the separation of the seeds of legumes.

Effects of multi inlet guide channels on the performance of a cyclone separator

Widely usage of cyclone separator, especially in industries, makes it not only one of the most interesting subject of papers nowadays, but research and development of it should follow necessarily. The unusual design of this cyclone makes it more useful and functional. This design causes to form a strong vortex flow in the cyclone, which increases the centrifugal force acting on each particle separately, increases the collection efficiency as well as decrease the cut-off diameter. So, simulation of the turbulent 3D flow has been done with the finite volume method and RSM turbulence model. The major contribution of the total cyclone pressure drop has occurred in the upper section of cyclone and guide channels, which increase the entered velocity to the main body of the cyclone. The results represent a uniform distribution of static pressure patterns at cyclone heights for each velocity as well as a uniform flow field pattern in the cyclone. In comparison with usual cyclones, because of the special design of inlet guide channels, not only the entrance velocity of flow to the main cyclone body has been increased, but the inappropriate moving of flow after the entrance to the main body toward the cyclone's top section doesn't occur. The cut-off diameter reduced by 0.2 μm in comparison with the usual cyclone separator. With 20% increasing in the inlet velocity, the maximum static pressure in all sections increases by approximately 41%, while the 20% reduction in the inlet velocity, reduces the maximum static pressure in all sections by 55% to 58%. A 20% increase in velocity compared to the initial velocity of 8.809 m/s, reducing the cut-off diameter to approximately 0.6 μm. A 20% decrease in inlet velocity, the separation efficiency is reduced in general and increases the cut-off diameter to 0.9 μm. The Stokes number smaller than 1, should be expressed as an appropriate criterion to select between two main aspects of Eulerian-Lagrangian and Eulerian- Eulerian approach. Reducing the inlet velocity amplifies the assumption of the Eulerian-Lagrangian aspect instead of the Eulerian- Eulerian approach. About the Euler number, the 20% increasing the inlet velocity has increased the pressure drop in the cyclone, but the inlet velocity seems to be more effective on the flow kinetic energy rather than an influence on the pressure drop.