Analysis on Steady Temperature of Honeycomb-Core Panel Based on Coupled Aerothermal Heating and Honeycomb Conduction

2011 ◽  
Vol 217-218 ◽  
pp. 1197-1201
Author(s):  
Wei Liang ◽  
Yu Fu ◽  
Zhen Qi Liu ◽  
Lu Lu Yang ◽  
Han Chao Mai
Keyword(s):  
Thermal Conductivity ◽  
Temperature Field ◽  
Numerical Method ◽  
Physical Model ◽  
Thermal Conduction ◽  
Honeycomb Structure ◽  
Honeycomb Core ◽  
Steady Temperature ◽  
Equivalent Thermal Conductivity ◽  
Steady Temperature Field

A physical model is formulated to evaluate the steady temperature field of honeycomb-core panel. The model takes into account the coupled effect of aerothermal heating and radiate energy from front and rear plate and honeycomb thermal conduction. The equations that are established based on the model are solved in numerical method and the equivalent thermal conductivity is obtained. The model is also used to investigate the effect of coming fluid and the geometric parameters of honeycomb structure on the TPS capacity.

Method of Lines to Solve 2-D Steady Temperature Field of FGM

2007 ◽  
Vol 353-358 ◽  
pp. 2003-2006 ◽  
Author(s):  
Wei Tan ◽  
Chang Qing Sun ◽  
Chun Fang Xue ◽  
Yao Dai
Keyword(s):  
Thermal Conductivity ◽  
Temperature Field ◽  
Transfer Problem ◽  
Method Of Lines ◽  
Main Idea ◽  
Functionally Graded ◽  
Temperature Fields ◽  
Steady Temperature ◽  
Thermal Transfer ◽  
Steady Temperature Field

Method of Lines (MOLs) is introduced to solve 2-Dimension steady temperature field of functionally graded materials (FGMs). The main idea of the method is to semi–discretized the governing equation of thermal transfer problem into a system of ordinary differential equations (ODEs) defined on discrete lines by means of the finite difference method. The temperature field of FGM can be obtained by solving the ODEs with functions of thermal properties. As numerical examples, six kinds of material thermal conductivity functions, i.e. three kinds of polynomial functions, an exponent function, a logarithmic function, and a sine function are selected to simulate spatial thermal conductivity profile in FGMs respectively. The steady-state temperature fields of 2-D thermal transfer problem are analyzed by the MOLs. Numerical results show that different material thermal conductivity function has obvious different effect on the temperature field.

Analysis of Temperature Field and Stress Field around Vertical U-Tube Exchange Used in Ground Source Heat Pump

2014 ◽  
Vol 1008-1009 ◽  
pp. 1097-1100 ◽  
Author(s):  
Pei Sheng Xi ◽  
Xing Wang
Keyword(s):  
Thermal Conductivity ◽  
Thermal Expansion ◽  
Temperature Field ◽  
Stress Field ◽  
Thermal Conduction ◽  
Ground Source Heat Pump ◽  
Radius Of Influence ◽  
Ground Source ◽  
Tube Exchange ◽  
Advection Velocity

Basing on coupled thermal conduction and groundwater advection conduction, this paper analyzed the effects to the temperature field and the stress field caused by the Vertical U-tube exchange used in ground source heat pump. And then this paper analyzed the relationship between heat influence radius and thermal conductivity and groundwater advection velocity. Also, we obtained the simple formula which can estimate the heat radius of influence. Basing on coupled thermal conduction and solid mechanics analyzed the stress field caused by thermal expansion. The results show that: without groundwater advection, the heat radius of influence linear correlate to the thermal conductivity; the radius will obviously expand when the groundwater advection velocity is not too small; the stress field caused by thermal expansion near the U-tube is much larger than the farther region and it will trends to balance with the distance increasing.

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