The Research of the Effect of Velocity on Coupled Temperature Filed in Pin-on-Ring Friction Pair under Electromagnetic Field

2014 ◽  
Vol 941-944 ◽  
pp. 2508-2511
Author(s):  
Qiao Wen ◽  
Lin Dong ◽  
Jie Yang ◽  
Zhei Wei Liu
Keyword(s):  
Electromagnetic Field ◽  
Temperature Field ◽  
Electromagnetic Induction ◽  
Rotation Angle ◽  
Friction Pair ◽  
Analysis Model ◽  
Induction Frequency ◽  
Temperature Filed ◽  
Temperature Field Model ◽  
Variation Rule

Based on the pin-on-ring friction pair jig, the temperature field model was established by FE software ANSYS under the coupled effect of electromagnetic induction heat and friction heat. The coupled temperature field distribution and variation rule of the analysis model were simulated and analyzed under different electromagnetic induction frequency and velocity. The results show that when the rotation angle, stress and electromagnetic induction frequency are constant, the maximum coupled temperature increases linearly with the increment of velocity, and the area of pin temperature gradients narrowed with the increasing velocity; the maximum coupled temperature rises with the increasing electromagnetic induction frequency under the constant rotation angle, stress and velocity. The research will provide FE simulation basis for the controlling of friction and wear by electromagnetic field.

Analysis of Temperature Field and Thermal Deformation for Lubricating Oil Transfer Pump

2012 ◽  
Vol 268-270 ◽  
pp. 1067-1070
Author(s):  
Jian Ning Xu ◽  
Wen Jie Lv ◽  
Bin Zhu ◽  
Duan Yin Zhu ◽  
Yan Xiong Gao
Keyword(s):  
Temperature Field ◽  
Thermal Deformation ◽  
Friction Pair ◽  
Lubricating Oil ◽  
Deformation Analysis ◽  
Analysis Model ◽  
Element Analysis ◽  
Screw Pump ◽  
Pump System ◽  
Twin Screw

Lubricating oil transfer pump is an important function subsystem in twin-screw pump system. The friction pair between Lubrication screw and shell also is heat source of the system, not only affect the temperature field of the subsystem and the whole system, and the excessive thermal deformation itself may exist can also cause drive failure. This paper established the temperature field and thermal deformation analysis model and boundary conditions of the lubrication screw by means of Finite Element Analysis, and analyzed temperature field and thermal deformation of the lubrication screw and shell as the coefficient of convective heat transfer is 1200W/m2∙°C in the oil production process, and proved thermal deformation of the lubrication screw and shell can not affect the normal work of Lubricating oil transfer pump in the condition.

Numerical Simulation of Electromagnetic Induction Heating in the Material Heat Treatment

2011 ◽  
Vol 291-294 ◽  
pp. 3377-3384 ◽  
Author(s):  
Jian Min Chen ◽  
Meng Zhang
Keyword(s):  
Electromagnetic Field ◽  
Temperature Field ◽  
Induction Heating ◽  
Electromagnetic Induction ◽  
Element Model ◽  
Physical Parameters ◽  
Ansys Software ◽  
Dimensional Finite Element ◽  
Electromagnetic Induction Heating ◽  
The One

The paper firstly introduces the principle and mode of electromagnetic induction heating. Accordingly the basic equations of electromagnetic field and temperature field in the heating material are derived from Maxwell's equations and heat conduction differential equations. Then give an example of the electromagnetic induction heating. With the application of ANSYS software, the one-dimensional finite element model of the heating material is built. And numerically simulate it by the means of the electromagnetic field and temperature field coupling in the ANSYS software. The influence of the material's physical parameters changing with the temperature and significant skin effect in the electromagnetic induction heating are considered. So the results are correct and reliable.

Study on the Temperature Filed of Wet Dual Clutch Transmission during Starting Process

2012 ◽  
Vol 187 ◽  
pp. 95-102
Author(s):  
Xi Liu ◽  
Xiu Sheng Cheng ◽  
Yan Li ◽  
Qiang Gu ◽  
Yin Shu Wang
Keyword(s):  
Temperature Field ◽  
Initial Conditions ◽  
Dual Clutch Transmission ◽  
Conduction Model ◽  
Clutch Engagement ◽  
Wet Clutch ◽  
Temperature Filed ◽  
Temperature Field Model ◽  
Vehicle Test ◽  
Starting Process

Based on the analysis of starting process of wet dual clutch transmission, dynamic rules for piston pressure and relative angular velocity of wet clutch were determined, According to the unsteady heat exchanging theory and the heat exchanging process of clutch engagement, a two dimensional heat conduction model of wet clutch was developed with reasonable initial conditions and boundary conditions. Matlab/PDE toolbox was used to solve the established model. The temperature distribution of friction pairs along the axial and radial direction were revealed in the Simulation results. Testing program had been designed, and real vehicle test was done to the temperature field on friction interface of wet dual clutch transmission in starting process. The test result indicated that the temperature field model and its solution were reliability, and it was instructive to optimize the design of wet clutch and its engaging control in starting process.

Study of the significance of the ph of the substrate of the biogas installation during treating it with a low-frequency electromagnetic field

2021 ◽  
pp. 106-114
Author(s):  
M.M. Zablodsky ◽  
◽  
P.B. Klendiy ◽  
O. P. Dudar ◽  
◽  
...  
Keyword(s):  
Electromagnetic Field ◽  
Electromagnetic Induction ◽  
Ph Value ◽  
Low Frequency ◽  
Decisive Role ◽  
Methane Fermentation ◽  
Different Types ◽  
Substrate Ph ◽  
Fermentation Substrate ◽  
Industrial Frequency

The article considers the issue of studying the value of pH, substrate in the process of methane fermentation in the mesophilic regime and the influence of the electromagnetic field of industrial frequency. The aim is to investigate the influence of electromagnetic fields on the pH value of the substrate during fermentation. Different types of microorganisms are involved in the process of methanogenesis, and the decisive role in it is played by methane-forming archaea, which are most sensitive to pH and should be in the range of 6.5 - 8. Therefore, it is necessary to check the effect of low frequency electromagnetic field on substrate pH. The study was performed for 25 days on two substrates, one of which was exposed to a low-frequency electromagnetic field with an electromagnetic induction of 3.5 mT. The research results show that the pH value of the substrate exposed to the electromagnetic field during the methane fermentation process was within acceptable limits, and the second substrate decreased, that is, it was acidified. Key words: methane fermentation, substrate, pH value, electromagnetic field

scholarly journals Influence of Rectifiers on Permanent Magnet Wind Generator Electromagnetic and Temperature Fields

2016 ◽  
Vol 10 (1) ◽  
pp. 205-219
Author(s):  
Qiu Hongbo ◽  
Dong Yu ◽  
Yang Cunxiang
Keyword(s):  
Electromagnetic Field ◽  
Temperature Field ◽  
Permanent Magnet ◽  
Core Loss ◽  
Harmonic Distortion ◽  
Temperature Fields ◽  
Stator Core ◽  
Current Harmonics ◽  
Copper Loss ◽  
Wind Generator

Power rectifiers are very necessary in the wind power generation systems since they are the necessary channels that link the generator and power gird together. However, they have some effects on the permanent magnet wind generator due to their work on fast on-off transitions. Taking an 8kW 2000r/min wind-driven permanent magnet generator as an example, the system model and external circuit were established. Firstly, based on the field-circuit coupling calculation method, the voltage and current harmonics have been studied respectively when the generator was connected to rectifier loads and pure resistance loads, so did the total harmonic distortion. The mechanism of harmonic impacted by rectifiers was revealed. Secondly, combined the harmonic electromagnetic field theory, the stator core loss, armature winding copper loss and rotor eddy loss were analyzed when the generator connected different loads. Furthermore, according to the definition of nonlinear circuits PF, the numerical analysis method was adopted to calculate the power factor when the generator connected two loads respectively. The change mechanism of PF impacted by rectifiers has been revealed. In addition, the temperature field model has been established and the generator temperature was also analyzed. The temperature distributions were obtained when the wind generator was connected to different loads. Then, the relationship between losses and temperature was combined, the change rules of permanent magnet temperature by the eddy current loss were studied under different load. At last, it can prove that the rectifiers have influences on both electromagnetic field and temperature field through comparing the simulation results with experimental test data.

Comparative Analysis of Temperature Field Model and Design of Cooling System Structure Parameters of Submersible Motor

2021 ◽  
pp. 1-30
Author(s):  
Qi Zhang ◽  
Zengliang Li ◽  
Xiangwei Dong ◽  
Yanxin Liu ◽  
Ran Yu
Keyword(s):  
Temperature Field ◽  
Field Model ◽  
Cooling System ◽  
System Structure ◽  
Structure Parameters ◽  
Bidirectional Coupling ◽  
Temperature Field Model ◽  
Submersible Motor ◽  
Coupling Mode ◽  
Two Temperature

Abstract The reliability of submersible motor is the key to determining the stability of the middle and deep sea exploration and development equipment. In this paper, in view of different equivalent modes of convective heat transfer of housing surface, two temperature field models are established in the finite volume method (FVM). The unidirectional and bidirectional coupling mode between loss and temperature of motor are analyzed, and the temperature calculation results are compared when the oil friction loss and copper loss are constant and variable. Then, the bidirectional coupling mode between radiator temperature field and cooling system internal flow field is determined based on the structural parameters of radiator and cooling circulation impeller. The circulation flow is simulated and the influence of different loss unidirectional coupling modes on the temperature field is compared. Finally, the cooling system design procedure is proposed to obtain the matching relationship of the same cooling system structure parameters of the two temperature field models. Experimental validation is presented, and a more reasonable temperature field model is obtained under the coupling mode proposed. It provides the necessary theoretical basis for the research on the submersible motor cooling system.

Modeling Of Thermophysical Processes In The Case Of Surface Modifying Of Metal During Induction Treatment

2017 ◽  
Vol 12 (1) ◽  
pp. 91-96
Author(s):  
Vladimir Popov ◽  
Vladimir Shchukin
Keyword(s):  
Numerical Simulation ◽  
Electromagnetic Field ◽  
Surface Layer ◽  
Temperature Field ◽  
High Frequency ◽  
Induction Treatment ◽  
High Frequency Electromagnetic Field ◽  
Modes Of Processing

Process of modifying of the surface layer of metals under influence of high-frequency electromagnetic field was considered using numerical simulation. The temperature field and the size of modified region were determined at various modes of processing.

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