Simulation Analysis Of Temperature Field Research Articles

Temperature field simulation analysis for hot blast valve of blast furnace

Temperature field simulation analysis for hot blast valve of blast furnace

Simulation Analysis of Temperature Field of Tinplate in the Quenching

Simulation Analysis of Temperature Field of Tinplate in the Quenching

Temperature field analysis and structure redesign of fiber optic gyroscope

Taking the fiber ring of the core device of the fiber optic gyro as the research object, the temperature field simulation analysis of the fiber gyroscope was carried out by ANSYS finite element analysis software, and the structural optimization of the fiber gyroscope was carried out, which effectively improved the temperature field distribution uniformity of the fiber optic ring and reduced the overall thermal equilibrium temperature and time when the fiber gyro reached stability.

Numerical Simulation of Grounding Characteristics and Temperature Field of Mine Tires under Multiple Working Conditions

Mine tires are an essential and expensive component of heavy mining machinery. This study explored the grounding characteristics and temperature field distribution of mining tires during driving as well as the relationships between the maximum temperature and tire inflation pressure, load, and speed. Two-dimensional and three-dimensional finite element models of mine tires were established. Steady-state rolling simulation analysis was conducted based on inflation and static load simulations. Temperature field simulation analysis was conducted with the tire section as a research object. The accuracy of the finite element model was verified. Analysis results demonstrated that the grounding contact area decreased with an increase in charging pressure and increased with an increase in load. With an increase in inflation pressure, the maximum normal grounding stress increased in the middle part of the tread and decreased near the shoulder. The maximum normal grounding stress continuously deviated in the shoulder direction with an increase in load. Temperature field analysis indicated that the tire had the maximum temperature at the binder position, where the first belt layer was connected to the second belt layer, which corresponds to the maximum stress position in the steady-state rolling simulations. Tire temperature increased with driving speed. The maximum temperature increased with an increase in tire deflection, whereas the deflection decreased with an increase in inflation pressure and increased with an increase in load. Speed had the greatest influence on the maximum temperature, followed by load, with inflation pressure having the smallest influence. The results of this research can be used to improve the service life of mine tires to improve productivity and reduce costs.

Material design and temperature field simulation analysis of tumor radiofrequency ablation needle

To solve the problems of small one-time ablation range and easy charring of the tissue around the electrode associated with the tumor radiofrequency ablation needle, based on the multiphysical field coupling analysis software COMSOL, the effects of needle material, the number of sub needles and the bending angle of sub needles on the ablation effect of radiofrequency ablation electrode needle were studied. The results show that compared with titanium alloy and stainless steel, nickel titanium alloy has better radiofrequency energy transmission efficiency and it is the best material for electrode needle. The number of sub needles has a great influence on the average necrosis depth and the maximum necrosis diameter. Under the same conditions, the more the number of sub needles, the larger the volume of coagulation necrosis area. The bending angle of the needle has a great effect on the maximum diameter of the coagulated necrotic area, but has little effect on the average necrotic depth. Under the same other conditions, the coagulation necrosis area formed by ablation increased with the increase of the bending angle of the sub needle. For the three needles with bending angles of 60 °, 90 ° and 120 ° analyzed in this paper, the one with bending angle of 120 ° can obtain the largest coagulation necrosis area. In general, the design of nickel titanium alloy with 120 ° bending 8-pin is the optimal. The average depth of radiofrequency ablation necrosis area is 32.40 mm, and the maximum necrosis diameter is 52.65 mm. The above optimized design parameters can provide guidance for the structure and material design of tumor radiofrequency ablation needle.

Study on Gas-Solid Heat Transfer and Decomposition Reaction of Calcination Process in an Annular Shaft Kiln Based on the Finite Volume Method

As an excellent reducing agent, lime has an important role in the steel production process. Annular Shaft Kiln (ASK) has been widely used in the lime production industry for its low cost, low footprint, high chemical activity, easy construction, and easy maintenance. Due to the high temperature generated inside ASK during operation, it is hard to observe the limestone decomposition process and the field distribution in the lime kiln. The simulation analysis of temperature field, velocity field and decomposition field in the limestone calcination process by CFD provides practical guidance for future lime product quality control, ASK design and operation parameters’ control. This study is based on an ASK that was put into production. Based on the finite volume method, this paper combines the porous medium model and the shrinking core model to establish a set of mathematical models that can describe the temperature and flow field distribution inside the ASK, as well as the limestone decomposition process and the heat and mass transfer process inside the ASK. According to the feedback from the production site, the mathematical model is in good agreement with the production results.

Simulation and analysis of temperature characteristics of a dual-coil magnetorheological brake

In this paper, the temperature characteristics of a dual-coil magnetorheological (MR) brake have been studied by theoretical analysis and finite element simulation. Firstly, the mathematical model of the temperature field of the MR brake is established based on the analysis of the heat source. Then, the temperature field simulation analysis under steady-state and transient operation has been conducted. From the simulation, the maximum slip power of MR brake under steady-state conditions is obtained. Under slip operation, the temperature in MR fluid working gaps of the dual-coil MR brake rises rapidly. The research results can provide a reference for the research of heat dissipation technology of MR brakes.

Design and applications of drilling trajectory measurement instrumentation in an ultra-deep borehole based on a fiber-optic gyro

Abstract. The working environment in hot dry rock boreholes, encountered in deep geothermal investigation drilling and ultra-deep geological drilling (up to 5000 m), is very difficult at the present stage. We have developed a drilling trajectory measuring instrumentation (DTMI), which is based on the interference fiber-optic gyro (FOG). This can work continuously, for 4 h, in an environment where the ambient temperature does not exceed 270 ∘C and the pressure does not exceed 120 MPa. The DTMI is mainly divided into three parts: an external confining tube, a metal vacuum flask, and a FOG measurement probe. Here, we focus on the mechanical design, strength, and pressure field simulation analysis for the external tube, the structural design and temperature field simulation analysis for the vacuum flask, and the FOG Shupe error analysis and compensation in the temperature field. Finally, through the engineering applications of the SK-2 east borehole of the China Continental Scientific Drilling (CCSD) project and the geothermal well of Xingreguan-2, the data measurements of the drilling trajectory were used to analyze the stability of the DTMI. The instrument realizes long-duration, high-stability work in the process of making trajectory measurements in an ultra-deep hole. The instrument has the characteristic of anti-electromagnetic interference and enables work to be carried out in the blind zone of existing technologies and instrumentation. Therefore, DTMI has great potential in the promotion and development of geological drilling technology.

Temperature Field Simulation Analysis of Common Rail Injector Based on Multi-Field Coupling

Temperature Field Simulation Analysis of Common Rail Injector Based on Multi-Field Coupling

Simulation analysis of temperature field of permafrost roadbed

The finite element analysis model of roadbed temperature field in permafrost region is established with finite element software platform. By using this model, the temperature field of roadbed is compared and analysed, and the freezing-thawing depth and variation rule of roadbed are studied. The results showed that the actual freezing depth was 1.8m. With the increase of the climate warming temperature, the temperature field in the roadbed changes slowly, and the temperature at different depths increases. Due to the influence of climate warming, the roadbed was in a complete positive temperature state when the maximum freezing depth appeared after 20 years. The result shown that the time of the roadbed appeared in the maximum freezing depth was earlier, the time of the roadbed in the seasonal freezing area became shorter, and the maximum freezing depth decreased.

Simulation Analysis of Temperature Field and Flow Field of High Power Inverter

For high power inverter, the internal temperature distribution directly affects its performance. In this paper, based on the finite volume method in Ansys Icepak, the temperature field and the flow field of a high power inverter are simulated and analyzed. According to calculating the power loss and heat dissipation of elements in the inverter, the temperature field and the flow field inside the cabinet under steady state operation are obtained. From the results of the simulation, the working temperature of component in inverter can be obtained and the performance of the cooling system of the inverter can be evaluated.

Simulation Analysis of Temperature Field of Conical Friction Plate Based on Thermomechanical Coupling

Using ABAQUS software, the temperature field in the process of sliding friction of the dual steel plate of a new friction plate-conical friction plate was simulated and analyzed by the method of thermo-mechanical coupling. The distribution of heat flux density and the convective heat transfer on different surfaces of the dual steel were considered in the calculation. It is found that the highest temperature of the dual steel during sliding is inside the tapered groove. The temperature inside and outside of the tapered groove is distributed in a low-high-low state, that is, the temperature at the bottom of the tapered groove and the top of the groove is higher than the middle position The temperature gradient of the radial node gradually becomes larger with the passage of time; the temperature distribution of the entire dual steel plate shows a symmetrical trend.

Numerical Simulation Analysis of Temperature Field of Airport Concrete Pavement

In this paper, through the analysis of the structure of airport concrete pavement surface, thermal properties, thermal properties, air parameters, solar radiation, atmosphere long wave radiation, obvious heat exchange and latent heat exchange of background and other factors, this paper build one dimension ground temperature field model. Then, we find finite element method solution of the model by ANSYS, get the temperature contours of the airport road surface, so as to provide theoretical support for the airport equipment of infrared stealth design, camouflage to guide the practice of airport equipment, camouflage effectiveness evaluation.

Simulation Analysis of Temperature Field and Its Influence Factors of the New Structure Ladle

Simulation Analysis of Temperature Field and Its Influence Factors of the New Structure Ladle

Simulation Analysis of Temperature Field of Permanent Magnet Governor

In the operation process of permanent magnet governor, the temperature rises due to eddy current loss, and demagnetization of permanent magnet occurs at high temperature. The numerical simulation of fluid flow field and temperature field was carried out with the method of computational fluid dynamics (CFD) and ANSYS-Fluent software. And then we improved the structure of permanent magnet governor on the basis of analysis of the flow field and temperature distribution. The result indicates that the flow of improved structure increases, and temperature drops 46.°C, fulfilling the desired temperature range of permanent magnet can bear, which provides a theory basis for the design of ventilation-cooling structure of permanent magnet governor.

Research on Temperature Stress for Contacts Reliability of Electric Connector

Temperature induced degradation is a widely recognized failure phenomenon.However, the basic mechanisms that control the onset and progression of such behavior are not well understood and are a topic of considerable interest in the electrical connector community. In this paper, the simulation analysis of temperature field on this topic are described. The distribution graph of temperature field for the electrical connectors and the highest temperature of the surface of electrical connector was achieved by analyzing a single blade/receptacle contact pair FEA model. A mathematical model was developed that related the early stage temperature levels for the connectors.Additionally, the thermal deformation caused by the temperature had little effect on the contact stress based on temperature - structure coupling field analysis for the electrical connector, the impact of temperature on the electrical connector was mainly reflected in the rate of oxidation of the metal surface. The failure physical process of the electric connector was drawn under temperature stress through the model and theory analysis for the electrical connector , and reliability growth program of the electrical connector was achieved under the temperature influence. The same transfer functions for one type of contact pair were obtained from the simulation, and the results showed that for this limited system, finite element modeling and analysis have great potential for evaluating the influence of design variations on degradation behavior.

Numerical Simulation Analysis of Temperature Field on Tympanites Roadbed

The physical model and calculating model of temperature field are founded according to the founded controlling equation. By simulating the changing progress of climate features, the temperature field of roadbed in permafrost region in different season was obtained. And some results are got by analyzing the diversity of temperature of key points. The last, the technology assumption of effectively controlling tympanites which combines replacing part frozen soil and resisting highway tympanites structure is brought up.

Finite Element Analysis for Thermal Characteristics of High Speed Angular Contact Ball Bearing

According to the high speed bearing failure problem caused by the high temperature, finite element model of high-speed hybrid ceramic angular contact ball bearing is established in this paper. Quantity of heat and heat transfer coefficient are calculated by using the heat transfer and thermodynamics theory, which are boundary condition for the temperature field simulation analysis of ball bearing. The temperature distribution of bearing is obtained when bearing speed is 12000rad/min. The results can provide a theoretical foundation for lubrication cooling system controlling temperature.

Method Research and Practice for Numerical Simulation Analysis of Temperature Field of Hot Runner of Injection Mould

In this article, it is studied how to establish and solve the mathematical model of temperature field of hot runner of injection mould, visual numerical simulation analysis for temperature field is realized with computer, and finally corresponding example is cited.

Simulation Analysis of Temperature Field in the Heat Transfer Process of Shell

Abstract Sea temperature is the key factors that determines whether shellfish can maintain normal growth development and survival, as protective film, the shell is a very important part of structure of shellfish, so the research of heat transfer characteristics become very important. In this paper, we firstly make a comprehensive analysis on the appearance of the shell, for the next simulation builds a good foundation, and based on the large general finite element analysis software ANSYS, we analyze the thermodynamics of shells, study the effect of the shell thickness and structure on heat transfer time. And through apply different temperature load, analyze the heat transfer characteristics and temperature distribution of the shells, It is expected that the results is useful at the biological heat transfer of shellfish.