scholarly journals Comparison of the effect of 1st order and 2nd order fluctuating temperature field on convective heat transfer coefficient in an unsteady laminar-boundary layer

2020 ◽  
Vol 912 ◽  
pp. 042049
Author(s):  
S B Gupta
Keyword(s):  
Heat Transfer ◽  
Boundary Layer ◽  
Temperature Field ◽  
Heat Transfer Coefficient ◽  
Transfer Coefficient ◽  
Convective Heat Transfer ◽  
Convective Heat ◽  
Laminar Boundary Layer ◽  
Convective Heat Transfer Coefficient ◽  
Fluctuating Temperature

Numerical Simulation of Temperature Field for Molten Low Voltage UV Cross-Linking Polyethylene Cable

2013 ◽  
Vol 427-429 ◽  
pp. 421-424
Author(s):  
Zi Cheng Jin ◽  
Yi Ping Lu ◽  
Jia De Han ◽  
Bo Huang ◽  
Zuo Min Wang
Keyword(s):  
Heat Transfer ◽  
Temperature Field ◽  
Heat Transfer Coefficient ◽  
Transfer Coefficient ◽  
Convective Heat Transfer ◽  
Convective Heat ◽  
Low Voltage ◽  
Convective Heat Transfer Coefficient ◽  
Cross Linking ◽  
Numerical Heat Transfer

In order to improve the quality of low voltage UV cross-linking product and provide a theoretical basis to the improvement of cross-linking device, the temperature field of cross-section of cable was studied based on the theories of semi-transparent medium radiation and numerical heat transfer in this article. Two cases with different convective heat transfer coefficient of cable surface were researched, and then the temperature distribution in the cable under different boundary conditions of heat convection was analyzed. At last, the temperature field characters of insulating layer and conductor cores in the cable were achieved and a reasonable value range of convective heat transfer coefficient of cable surface was given in this article.

The Temperature Field Analysis about the Thermal Assembly Process of the Roller Sleeve of HFCG160 Roller Press

2014 ◽  
Vol 472 ◽  
pp. 131-135
Author(s):  
Jia Han Bao ◽  
Yong Wang ◽  
Jie Cai
Keyword(s):  
Heat Transfer ◽  
Temperature Field ◽  
Heat Transfer Coefficient ◽  
Transfer Coefficient ◽  
Convective Heat Transfer ◽  
Convective Heat ◽  
Test Temperature ◽  
Convective Heat Transfer Coefficient ◽  
Assembly Process ◽  
Roller Press

This paper used the finite element software ANSYS to simulate the thermal assembly process of the roller sleeve of the HFCG160 roller press, and study the change of the temperature field. And then, comparing the simulation temperature with the test temperature, the results show that the simulation temperature is basically consistent with the test temperature, while there are slight biases on the individual points within a certain period of time. The main reason for biases between the simulation temperature and the test temperature is that the convective heat transfer coefficient is average during the simulation, which ignoring the convective heat transfer coefficient decreases with the decreasing of temperature.

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