scholarly journals A numerical method based on domain decomposition to solve coupled conduction-radiation physics using parallel computing within large porous media

2021 ◽  
Vol 2116 (1) ◽  
pp. 012057
Author(s):  
Atin Kumar ◽  
Jérôme Vicente ◽  
Jean-Vincent Daurelle ◽  
Yann Favennec ◽  
Benoit Rousseau
Keyword(s):  
Heat Transfer ◽  
Domain Decomposition ◽  
Radiative Heat ◽  
Radiation Physics ◽  
Decomposition Approach ◽  
Highly Porous Materials ◽  
Coupled Heat Transfer ◽  
Volume Method ◽  
Highly Porous ◽  
Cell Foam

Abstract A domain decomposition approach is developed to solve coupled conductive– radiative heat transfer within highly porous materials. In this work, a Kelvin–cell foam with five cells in each direction which has ˇ15.6 × 106 of voxels is considered. The coupled heat transfer is solved using the finite volume method where deterministic ray tracing is used to calculate radiative exchange. The temperature distribution is computed and cross–validated with the distribution obtained using a commercial software STAR–CCM+.

A Parallelized Node-Centered Finite Volume Method for Computing Radiative Heat Transfer on 3D Unstructured Hybrid Grids

2012 ◽  
Author(s):  
Georgios N. Lygidakis ◽  
Ioannis K. Nikolos
Keyword(s):  
Heat Transfer ◽  
Finite Volume Method ◽  
Finite Volume ◽  
Radiative Heat Transfer ◽  
Message Passing Interface ◽  
Radiative Heat ◽  
Three Dimensions ◽  
Heat Transfer Fluid ◽  
Decomposition Approach ◽  
Volume Method

An algorithm for the computation of radiative heat transfer for absorbing, emitting and either isotropically or anisotropically scattering gray medium in three dimensions is developed. Radiative transfer equation is solved using a node-centered finite volume method in combination with an edge-based data structure, while scattering phase function is defined by Legendre polynomial expansions. Hybrid unstructured grids are used, due to their good viscous layer resolving capability, considering that our final objective is the analysis of coupled heat transfer-fluid flow problems. In addition, domain decomposition approach with message passing interface model is utilized, in order the proposed algorithm to be implemented in a parallel computational system. Numerical results reveal that the present methodology has a good performance in terms of accuracy, geometric flexibility, and computational efficiency.

Coupled Heat Transfer Simulation of a Low-Pressure Turbine Vane

2014 ◽  
Vol 614 ◽  
pp. 128-132 ◽  
Author(s):  
Xin Bian ◽  
Tao Li ◽  
Liang Jiang ◽  
Rui Gang Zhang ◽  
Hong Yan Huang
Keyword(s):  
Heat Transfer ◽  
Experimental Data ◽  
Heat Conduction Equation ◽  
Cooling Channel ◽  
Low Pressure Turbine ◽  
Coupled Heat Transfer ◽  
Turbine Vane ◽  
Heat Transfer Simulation ◽  
Transition Models ◽  
Volume Method

A coupled heat transfer (CHT) solver was established. The solver couples the N-S equations with the heat conduction equation using the finite volume method. The developed CHT solver was verified by Mark II 5411 case. The numerical results agree well with experimental data, proving the accuracy of the developed CHT code. The solver was applied to the coupled heat transfer simulations of an air-cooled turbine with a single cooling channel. Adiabatic results and CHT results were compared. Different turbulence and transition models were employed. The result shows that the developed code is of great use in engineering simulations, and in order to predict thermal loads on turbine vane accurately, transition needs to be considered.

Finite volume method for non-equilibrium radiative heat transfer

2013 ◽  
Vol 65 ◽  
pp. 670-681 ◽  
Author(s):  
Babila Ramamoorthy ◽  
Gary C. Cheng ◽  
Roy P. Koomullil ◽  
Ramin K. Rahmani
Keyword(s):  
Heat Transfer ◽  
Finite Volume Method ◽  
Finite Volume ◽  
Radiative Heat Transfer ◽  
Radiative Heat ◽  
Volume Method ◽  
Non Equilibrium
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