Network method to study the transient heat transfer problem in a vertical channel with viscous dissipation

2006 ◽  
Vol 33 (9) ◽  
pp. 1079-1087 ◽  
Author(s):  
Joaquín Zueco Jordán
Keyword(s):  
Heat Transfer ◽  
Viscous Dissipation ◽  
Transfer Problem ◽  
Vertical Channel ◽  
Heat Transfer Problem ◽  
Transient Heat Transfer ◽  
Network Method

A Coupled Computational Framework for the Transient Heat Transfer in a Circular Pipe Heated Internally With Expanding Heat Sources

2020 ◽  
Vol 142 (6) ◽  
Author(s):  
Chaobin Hu ◽  
Xiaobing Zhang
Keyword(s):  
Heat Transfer ◽  
Heat Exchange ◽  
Energetic Materials ◽  
Transfer Problem ◽  
Lumped Parameter Model ◽  
Heat Transfer Problem ◽  
Transient Heat Transfer ◽  
Combustion Model ◽  
Heat Sources ◽  
Computational Framework

Abstract In the present work, a transient heat transfer problem induced by internal combustion of energetic materials was studied. Most of previous studies utilized a lumped-parameter model to predict the parameter distributions of the hot combustion products, which determine the boundary conditions for the transient heat transfer problem. Moreover, the heat exchange between the solids and the fluids was ignored in the combustion model. In order to improve the modeling accuracy, a one-dimensional (1D) two-phase flow model was utilized to predict the fluid fields and the heat exchange was coupled into the combustion model. Based on the commercial software abaqus, the transient heat transfer in the combustion chamber was studied using a finite element method. The meshes near the inner surface were refined to capture the high temperature gradients along the radial direction of the barrel. Results indicate that the coupled model is capable of solving the transient heat transfer problems heated by distributed moving heat sources. The coupled computational framework provides foundations for the study of local wear and erosion of solids in extreme working conditions.

Bayesian Method for Parameter Estimation in Transient Heat Transfer Problem

2021 ◽  
Vol 166 ◽  
pp. 120746
Author(s):  
Aminul Islam Khan ◽  
Md Muhtasim Billah ◽  
Chunhua Ying ◽  
Jin Liu ◽  
Prashanta Dutta
Keyword(s):  
Heat Transfer ◽  
Parameter Estimation ◽  
Bayesian Method ◽  
Transfer Problem ◽  
Heat Transfer Problem ◽  
Transient Heat Transfer

scholarly journals Semianalytical Solution of Transient Heat Transfer for Laminated Structures under Time-Varying Boundary Conditions

2021 ◽  
Vol 2021 ◽  
pp. 1-12
Author(s):  
Xi-Xia Li ◽  
Li Wang ◽  
Chang-Yu Li ◽  
Yi-Yu Wan ◽  
Yu-Chen Qian
Keyword(s):  
Heat Transfer ◽  
Boundary Conditions ◽  
Time Domain ◽  
Transfer Problem ◽  
Heat Transfer Problem ◽  
Transient Heat Transfer ◽  
Maximum Temperature ◽  
Time Varying ◽  
Laminated Structure ◽  
Laminated Structures

In order to solve the transient heat transfer problem of the laminated structure, a semianalytical method based on calculus is adopted. First, the time domain is divided into tiny time segments; the analytical solution of transient heat transfer of laminated structures in the segments is derived by using the method of separation of variables. Then, the semianalytical solution of transient heat transfer in the whole time domain is obtained by circulation. The transient heat transfer of the three-layer structure is analyzed by the semianalytical solution. Three time-varying boundary conditions (a: square wave, b: triangular wave, and c: sinusoidal wave) are applied to the surface of the laminated structure. The influence of some key parameters on the temperature field of the laminated structure is analyzed. It is found that the surface temperature of the laminated structure increases fastest when heated by square wave, and the maximum temperature can reach at 377°C, the temperature rises the most slowly when heated by the triangular wave, and the maximum temperature is 347°C. The novelty of this work is that the analytical method is used to analyze the nonlinear heat transfer problem, which is different from the general numerical method, and this method can be applied to solve the heat transfer problem of general laminated structures.

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