SolidWorks Flow Simulation Research Articles

Body Shape Selection of "Bono Kampar" For Urban Concept Student Car Formula to Fulfill Indonesian Energy-Saving Standards (“KMHE”) with Aerodynamic Analysis

The body shape of a vehicle and the structure need to be considered when designing a vehicle. In addition, the shape of the body tends to significantly affect the vehicle's energy use to counter aerodynamic forces due to wind loads. Therefore, this research aims to determine the body length, width, height, wheel base and ground clearance of vehicles in the selection of Bono Kampar for Urban Concept Car Formula to Fulfill Indonesia Energy-Savings Standards (“KMHE”) with Aerodynamics Analysis. The methods used to create four models of vehicle bodies are dynamic simulation on Computational Fluid Dynamic software are coefficient drag, lift and bland force. The result showed that the car body design needs to have the smallest drag coefficient. This is because when vehicles have a large drag coefficient value, it tends to greatly influence its efficiency or performance. Furthermore, this is useful for minimizing fuel usage, and in allowing the vehicle to reduce the friction force caused by air while driving. The Computational Fluid Dynamic (CFD) software is used to obtain drag coefficients, which is used in Solid works Flow Simulation. From aerodynamic simulation results on four alternative car bodies carried out in this study, the smallest Cd (Coefficient Drag) is the second car body model, which has Drag Coefficient (Cd) of 0.21 Pa.

ВИЗНАЧЕННЯ ЕНЕРГЕТИЧНО ЕФЕКТИВНОГО РІВНЯ ШВИДКОСТІ ПЕРЕМІШУВАЛЬНОГО ОРГАНУ ЕЛЕКТРОМЕХАНІЧНОЇ СИСТЕМИ

Purpose. Today, biomass fermentation in biogas plants is one of the most advanced, environmentally and economically viable solutions for energy production from waste. However, the process of anaerobic digestion of waste is long, so the main process of intensification is mixing. Analysis of well-known studies of domestic and foreign scientists indicates the urgency of reducing energy consumption for the mixing process. The aim of the study is to determine the energy-efficient speed of a paddle stirrer with blades set at an angle of 450 for small biogas reactors. Methodology. At the decision of the set tasks the general methods of physics, three-dimensional modeling, processing and visualization of the received results in the SolidWorks Flow Simulation and Wolfram Mathematica programs are applied. Results. Using 3D modeling, the influence of the stirrer speed on the picture of the distribution of the velocity vectors of the substrate flows in the biogas reactor was studied. Graphs of power consumption at the beginning of mixing for different stirrer speeds were obtained and analyzed, and the levels of energy consumed for mixing biomass during the start-up period and the whole mixing period were compared. A method for determining the energy efficient rotation speed of the stirring mechanism of the electromechanical system of biogas reactors is proposed. Practical value. The results can be used in the construction and modernization of biogas plants to reduce energy consumption of the substrate mixing process. Conclusion. Based on the research, it was concluded that for a paddle two-tier mixer with blades set at an angle of 450 energy-efficient speed, is 40 rpm. At this speed, careful and intensive mixing of the biomass is observed throughout the volume of the tank. The average velocity of flow vectors in the biomass volume is 0,273 m/s. The energy consumed per cycle of biomass mixing is 2471,3 J, and the percentage of energy consumed during the start-up period from the energy consumed during the entire mixing period is 0,62 %. References 19, figures 5.

Numerical simulation and optimization of cooling flow field of cylindrical cathode with annular magnetic field

In order to solve the problems of unstable discharge, low deposition rate and large difference in ionization rate between different targets in high power impulse magnetron sputtering, a novel cylindrical cathode with annular magnetic field based on hollow cathode effect is proposed, which can be used to produce ion beam with high ionization rate, high plasma density and no large particles. However, the traditional channel structure could not guarantee its high efficiency and uniform heat dissipation. The sealing ring may be damaged by ablation due to high power density, which restricts the further improvement of power density. Therefore, it is necessary to optimize the design of the channel structure. SolidWorks flow simulation software is used to simulate the cooling channel of plasma source. The influence of water hole structure parameters on cooling effect is analyzed, including distribution angle, hole number, diameter and inlet hole height. And the channel structure parameters are optimized. The results show that the increasing of the circumferential distribution range of the water hole is beneficial to the uniformity of heat dissipation, ensuring a large temperature difference between cooling water and copper sleeve, and strengthening heat exchange. The water inlet hole set in the upper layer of the structure is conducive to alleviating the temperature stratification phenomenon of the cooling water, so that the copper sleeve and sealing ring are in good cooling condition. Appropriately reducing the aperture is beneficial to increasing the cooling water jet velocity, enhancing the jet impact effect, and then increasing the turbulence degree, strengthening the heat transfer and improving the heat transfer efficiency. By systematically studying the influencing factors, the optimized cooling flow field structure of cylindrical cathode with an annular magnetic field is obtained. The distribution angle is 30°, the number of holes is 6, the aperture is 4 mm, and the height of water inlet hole is 36 mm. The optimized channel structure can improve the utilization rate of cooling water, obtaining better cooling effect at the same flow rate, and improving the discharge stability of the plasma source, which provides a basis for designing the cooling structure of the cylindrical cathode with annular magnetic field.

Aerodynamics analysis of the car using Solidworks flow simulation with rear spoiler using CFD

The Vehicle stability is the major concern in the high speed car being produced now a day. The fuel consumption is mainly affected by different forces which include the force due to drag and lift, force due to self-weight, side forces and also the thrust acting on the vehicle. About 60% of the drag is which is caused due to the relative motion between the air and the vehicle is created at the rear end. The fuel consumption can be increased by reducing the drag force at the rear end. So this paper aims to reduce the drag force which helps in improving the fuel consumption which leads to environment protection. We used a Sedan car with various types of spoilers for reducing the aerodynamic drag force. The design of the car was done on SOLIDWORKS and also it was used for the analysis in SOLIDWORKS FLOW SIMULATION. The analysis was done to find out the drag and lift forces at various velocities and by using different spoilers. This study proposed a numerical model which was effective when done on the computational fluid dynamics (CFD) so as to obtain the different flow structure around the car with spoiler at the rear end.

Analysis of hydraulic resistance in a rotating junction of the cooling system of an active phased array antenna of a circular view

A hydraulic rotating transition is used to ensure the supply of coolant to the fuel elements when the antenna system is fully rotated. One of the main actuators of the antenna liquid cooling system is the hydraulic rotating transition. The SolidWorks Flow Simulation software package simulates the change in hydraulic resistance in a hydraulic rotating transition in various modes of operation. The process of transferring the coolant through a hydraulic rotating transition to the antenna, with full rotation, taking into account the influence of the geometric shape of the channels on the fluid flow, was modeled. The maximum values of resistances are analyzed in different operating modes. The dependence of hydraulic resistance on the quality of surface treatment of parts is given. The value of the hydraulic resistance in different modes of operation of the hydraulic rotating transition (HRT) is less than the value allowed to ensure the circulation of the working fluid in the cooling system. Based on the data obtained, an assessment of the feasibility of using the design of a hydraulic rotating transition for an active phased antenna array of a circular view at the design stage is made.

PARAMETRIC OPTIMIZATION OF HYDRODYNAMIC AND THERMAL PARAMETERS OF HEAT EXCHANGE EQUIPMENT BASED ON SIMILARITY THEORY AND DIMENSIONAL ANALYSIS

The technique of optimization of hydrodynamic and thermophysical parameters of countercurrent heat exchanger is given in the article. The presented technique is based on the usage of computational fluid dynamics (CFD) application SolidWorks Flow Simulation with subsequent approximation of the obtained data by the criterion equation based on similarity theory and dimensional analysis. It is known that the course of processes occurring in the heat exchange equipment is influenced by a large number of parameters, in particular geometric sizes, thermophysical properties of heat carriers etc. Therefore, the optimization problem is multifactorial and in order to simplify the mathematical model, it was decided to use the methods of similarity and dimension theory. As an optimization criterion was chosen the efficiency of the heat exchanger that is an integrated characteristic of the optimal operation of heat exchangers. The proposed methods of parametric optimization of geometric and mode parameters of the shell-and-tube heat exchanger, although the proposed technique can be extended to other types of heat exchange equipment. The database containing information about all the parameters of the studied models allows for multifactor analysis in MathCAD 15 application in order to establish the unknown constants of the criterion equation. The obtained criterion equation allows to quickly find the appropriate modes of operation of the heat exchanger that satisfy the conditions of the objective function.

Aerodynamic effects of leading edge (LE) slats and slotted trailing edge (TE) flaps on NACA-2412 airfoil in prospect of optimization

Currently, various high lift devices are being employed in the general aviation industry. The performance of these high lift devices depends on various parameters, among which the geometrical or positional parameters are one of the most important as their influence is very prominent on the aerodynamics of the wing. Hence, attention is to be given to the optimization of these devices to increase their efficiency and performance. This article focuses on the optimization of high lift devices such as leading edge slats and trailing edge flaps. The optimization is achieved with four defined configurations for each high lift device and then compared their results with each other to find the best configuration; here the best performance refers to maximization of section coefficient of lift. A two-dimensional CFD (computational Fluid Dynamics) analysis performed on best three element airfoil using SolidWorks Flow Simulation tool with variation in aerodynamic parameters as lift and pitching moment. The obtained results have an accuracy of 1.09% for maximum coefficient of lift and 0.4% for landing condition respectively. Thus the optimized NACA2412 three-element airfoil gives good aerodynamic performance.

Study of the influence of the design of the turning tool on the removal of thermal energy from the cutting zone

In this work, we performed a study and developed the design of through-cutters that provide accelerated heat removal from the cutting zone with external turning. Using SolidWorks Simulation engineering analysis and SolidWorks Flow Simulation gas-hydrodynamic analysis modules as a research tool, we created a basic 3D model of a precast cutter and carried out a thermal analysis of the transition process to determine the distribution of temperature fields in the body of the cutter throughout time during the cutting process. After that, we made changes to the design of the cutter, specifically, created a cavity in the holder body in which the copper core was placed. We then re-performed the studies described above, which showed that when using a copper core, the temperature in the cutting zone decreases by 246 °C within 15 minutes from the start of the work. To obtain a greater effect, we added a hole in the copper core and used air cooling, which allowed reducing the temperature in the cutting zone by 313 °C.

Thermohydraulic simulation of a channel with targets for production of radioactive isotopes in the IVV-2M nuclear reactor

The importance of radioisotope products usage in industry, science and medicine is underlined. The necessity of safety ensuring and radiation protection optimization while transporting the containers with radioactive isotopes is postulated. The information on isotope products making in the IVV-2M nuclear reactor of Research Institute of Nuclear Materials, JSC, from the beginning of 1990-ies is given. The data on application properties of Selenium 75 isotope are presented. The requirements to the thermohydraulic conditions of Se 75 isotope production in the nuclear reactor are formulated. The stages of a solid model development of a target for Se-75 isotope production as a part of an irradiation device of IVV-2M nuclear reactor are described. The results of hydraulic simulation of the coolant flow for various ways of devices arranging in the irradiation channel of the reactor are given. The analysis of thermohydraulic processes was performed with the help of SolidWorks Flow Simulation software.

Wind effects on heat loss from a receiver with longitudinal tilt angle of small-scale linear Fresnel reflectors for urban applications

Abstract This paper presents an analysis of the wind effects, wind velocity and wind direction, on heat losses from a receiver with the longitudinal tilt angle of small-scale linear Fresnel reflectors for urban applications. In urban applications, the area required to install a solar collector is a critical parameter, therefore the parameter given by the energy-to-area ratio must reach its maximum value. Different combinations of longitudinal tilt angles are analyzed and compared with the typical configuration of a large scale linear Fresnel reflector (C1 configuration). The analysis is performed by SolidWorks Flow Simulation for different wind velocities and wind directions. Heat losses from the receiver have been estimated using a 3-D computational fluid dynamics model. Based on the numerical simulation of the receiver, the heat loss analysis has been calculated for several wind velocities, wind directions, and maximum energy-to-area ratio configurations. The effect of wind direction on heat losses is almost negligible. Although, heat losses are slightly higher in the North wind direction in most simulations. It will be demonstrated that the heat losses dramatically increase with a maximum energy-to-area ratio configuration, with the increase in longitudinal angle and, obviously, with the wind velocity. On the other hand, heat losses are higher at those locations with greater maximum energy-to-area ratio configuration. The heat losses, for wind velocity of 10 ( m / s ) and North direction, are, approximately, 120 % of C 1 , 131 % of C 1 , 143 % of C 1 , 165 % of C 1 and 174 % of C 1 , in Almeria, Rome, Budapest, Berlin and Helsinki, respectively. The longitudinal inclination of the receiver has positive effects on the performance of small scale linear Fresnel reflectors for urban applications.

The use of CFD calculations for the solution of the control problem of applying protective coatings of varying thickness

The paper analyzes the results of simulation of a supersonic air flow about simple 3D forms in order to use them for applying protective coatings to the surface with varying thickness by means of cold gas-dynamic spaying. To calculate the results, an aerodynamic analysis is performed in SolidWorks Flow Simulation software environment. Air flow zones on a streamlined surface with various characteristics (pressure, temperature, geometric shape, etc.) are analyzed, and possible methods of determination the boundaries of these zones are considered. For the solution of the control problem of applying protective coatings of varying thickness, the displacement behaviour of the movable nozzle with a small cross section is considered.

The Effect of separated Expansion Chamber Parameters on Exhaust Pressure Oscillations in Single Cylinder Motorcycle Engine

Abstract This paper investigates the effect of separated exhaust expansion chamber parameters on pressure oscillations in spark-ignited internal combustion (IC) gasoline engines. It is known that exhaust expansion chambers are becoming increasingly more popular among both – original equipment (OE) and aftermarket equipment (AE) exhaust system manufacturers for performance-oriented motorcycles equipped with mainly single cylinder engines, but the companies are reluctant to reveal any detailed principles of operation of the mentioned expansion chambers. The subject of this research is the type of expansion chamber (separate) as used on performance-oriented motorcycles, particularly its’ effect on exhaust pressure pulsations as different chamber volumes, locations and passage sizes are tested. Time-dependent computational fluid dynamics (CFD) analysis was carried out in Solidworks Flow Simulation environment on a simplified exhaust header pipe model imitating engine operation at full load and steady speed. Honda CRF450R motorcycle engine was used as the example and fully defined using a 1D engine performance calculator software to determine the combustion chamber pressure and exhaust valve lift at any given crankshaft position. Volume flow rate of exhaust gasses at the header pipe inlet was calculated based on engine parameters and operating speed. The average pressure values with respect to physical time were measured and graphed across the header pipe inlet cross-section. Eight different header pipe and exhaust expansion chamber combinations were modelled, tested, and results compared at low, medium and high engine speeds. It was found that the presence of exhaust expansion chamber tends to dampen the amplitude and decrease the frequency of pressure oscillations generated at the opening of the exhaust valve(s). Observations show that the addition of an expansion chamber as per design of performance-oriented motorcycles helps to decrease the negative effect of engine tuning while also dampening the positive effect.

Air in industrial premises

The article considers a method for increasing the stability of air parameters in a limited space of the general production process using simulation methods in the environments of SolidWorks Flow Simulation HVAC Module Add-In and Matlab Simulink and Fuzzy Logic Toolbox. To select the simulation method, the models of Boussinesq, Spalart - Almaras, k - ω and k - ε; models, Reynolds, and the equations describing these models are considered. It is established that the most effective for the problem is the Navier-Stokes equation averaged by Reynolds. For the calculated ventilation system, as a result of simulation, we obtained the distribution of temperatures, air velocities, and temperatures of enclosing surfaces, floors, and objects. The results obtained were used to create a fuzzy controller. We obtained the set term and membership functions for input and output variables for four zones. The hierarchical structure consisting of three levels was used to implement the control process. Setting the FC parameters to the desired parameters is achieved by changing the dimension of the terms of the sets, the number and type of the membership function. An analytical description of the control method based on fuzzy logic is obtained. The control process is being carried out continuously in tracking mode. The results of experiments are submitted. The simulation showed that it is possible to stabilize the parameters in a given temperature range with a specified error.

Analysis of drag and lift forces for a sedan car using a rear lip spoiler

In this research, aerodynamic tests were carried out using Solidworks Flow Simulation software on a Sedan-type car, implementing different sizes of lip-type spoilers at the rear to obtain the results of the drag and lift coefficients produced by movement. of the air regardless of the design at the rear of the car and analyze if there was improvement in aerodynamics. Analyzing the results, it is obtained that the aerodynamics of the car is improved when a lip-type spoiler is fitted, the lift forces were reduced, whereas the drag forces remained constant for all the different designs.

Определение аэродинамических коэффициентов ракеты класса «земля – воздух» методами вычислительной гидродинамики в SolidWorks Flow Simulation

Определение аэродинамических коэффициентов ракеты класса «земля – воздух» методами вычислительной гидродинамики в SolidWorks Flow Simulation

STUDY OF THE INFLUENCE OF FLUID FLOW SWIRLS ON THE HYDRAULIC RESISTANCE OF A PIPELINE

Background With the increase in the volume of pumping oil and oil products, as well as the significant importance of measures to ensure energy-efficient operation of main pumping units (MPU), according to the Federal Law dd. November 23, 2009 No. 261-ФЗ «On energy conservation and on improving energy efficiency and on amendments to separate legislative acts of the Russian Federation», the development of recommendations for reducing energy costs in oil transportation is an important technological task. Operating experience of oil main pipelines (MP) indicates that the use of dragreducing additives (DRA) is one of the most effective ways to reduce the energy consumption of MPU (increase the throughput of MP). The determination of the effectiveness of DRA is carried out in the process of pilot industrial tests for oil pressure vessels, which require material resources and time, and conducting research in laboratory conditions is complicated by the presence of an unreliable transfer of the results of laboratory experiments to real oil pumping conditions. An analysis of the world experience in the application of DRA in oil pipelines was made, which showed that the effectiveness of using DRA to reduce hydraulic friction losses in the pipeline depends on many factors, such as the properties of the pumped oil, the solubility of the additive, and the rate of dosing of the additive into the transported medium, flow regime (Reynolds number), multiphase flow. One of the solutions to the above problem is to reduce hydraulic friction losses in the oil pipeline, based on the use of vortex fluid flow, since overcoming hydraulic resistance in the pipeline accounts for 33.9 % of electric energy costs. Aims and Objectives The aim of the work was to assess the effect of fluid flow swirls on the hydraulic resistance of the pipeline. The following tasks were solved: to conduct computer modeling in the SolidWorks Flow Simulation software package (hereinafter referred to as the PC) to obtain the dependence of the flow rate and pressure drop along the pipeline length on the experimental bench model; determine the most effective design parameters of the pipe with a spiral channel (spiral twist step) for the prototype experimental bench (DN 15); calculate the coefficient of hydraulic resistance of the pipeline when pumping fluid with swirling and without swirling flow. Methods The article presents the results of computer simulation obtained by the finite volume method in the SolidWorks Flow Simulation software package, the dependences of the flow rate and pressure drop along the length of the pipeline for various diameters during the vortex flow of an incompressible fluid through the pipeline. Results Recommendations have been developed on the design of the spiral channel in the pipe to increase the efficiency of the use of the vortex flow in order to reduce hydraulic resistance when pumping an incompressible fluid. The results obtained allow us to conclude that it is advisable to conduct further experimental studies in this direction in order to develop a method to increase the throughput of the pipeline.

Study of the Effect of Bulb Ratio and Blade Angle on Propeller Turbine Performance in Horizontal Flow using Numerical Simulation

This paper discusses numerical simulations of horizontal flow propeller turbines. Static bulbs located before the turbine can be used to increase water velocity and potentially increase the turbine's performance. The blade angle affects the gap between the blades, and this will also affect the performance of the turbine. Numerical simulations were conducted by using software Solid Works Flow Simulation 2016 and by using five blades in a static state. This study aimed to determine the effect of the bulb ratio and blade angle on the propeller turbine characteristics on horizontal flow. Bulb Ratio variations used in this study were 0, 0.4, 0.6, and 0.8, while the angle variations used were 20, 25, and 30 degrees. Each variation was tested at 0.02 m3/second. The results of this study indicated that the bulb ratio 0.6 with the 25-degree blade angle produces the highest torque

Design and Analysis of Hexagonal and Octagonal Honey Comb Structures with Various Materials and FEM Analysis.

The demands for automotive interior and exterior panels in present and future request is an optimal combination of materials and cost-efficient production processes. Mechanical andacoustical requirementsof high strength and a weight target result, todayoften in the selection of a sandwich design with a cost efficient and recyclable core material. Honey comb sandwich structures are used in Airplane wings, Ships, Cars, Civil Constructions, etc. Now a days this technology is being used all-over the automotive fields. These designs are the best way for low material usage and high strength. In this project the designs of hexagonal and octagonal honey comb structures are to be analysed and compared for the best result in structure. The structures are to be developed by using SolidWorks[1] software. Solidworks flow simulation is to be used to test the effectiveness and limitations of the structures. Thermal and static analysis are to be analysed by using solidworks simulation software with different types of materials like Titanium, Aluminum, and Stainless steelto identify the best material at low cost and high efficient by applying various loads of finite element method analysis.

Data on the thermo-fluid simulation of open-cathode fuel cell stack depending on the location of the oxidizer/cooling supply system.

The content of this paper provides simulation data of the distribution of temperature fields, and oxidizer/cooling agent (air) flows in dependence with location of the oxidizer/cooling supply system in open-cathode polymer electrolyte membrane fuel cell (PEMFC) stack. The finite element method in Solid Works Simulation and Solid Works Flow Simulation software were used for bipolar plate strength calculation and thermo-fluid simulation of PEMFC stack with forced-air convection. The simulations were carried out for two variants of the oxidizer/cooling supply system location - at the entrance to the fuel cell stack (air injection) and at the outlet of the fuel cell stack (air intake).

Development of a cooling system for 6U module based on Elbrus microprocessor

The article discusses the design features of cooling systems for compact Eurocard format modules based on the Elbrus microprocessor. The issue of ensuring the necessary thermal regime of the processor module in the space shortage conditions in order to accommodate the cooling system has been solved. The estimated calculation showed the underperformance of the passive cooling of the Elbrus-4S microprocessor with a heat output of 60 W. In this regard, a 3D model of an active cooling system with 5.5×10.3×4.6 cm dimensions was developed. Thermal calculations were performed using the SolidWorks Flow Simulation program in order to optimize the radiator geometry and fan speed. It was assumed that an optimized cooling system will ensure that the chip temperature of the Elbrus-4S processor is no more than +87 °C (at an ambient temperature of +55 °C). Based on the results of the study, three prototypes were produced for testing. Further tests conducted on prototypes showed the efficiency of the cooling system and the high accuracy of the simulation results. During tests in a climatic chamber at a temperature of +55 °C, the temperature on the microprocessor chip did not exceed +84 °C (a difference of 3 °C compared to the estimated one).