A numerical and experimental comparison of heat transfer in a quasi two-dimensional packed bed
作者机构：Department of Energy Plant TechnologyRuhr-University BochumGermany Institute for Simulation and GraphicsOtto-von-Guericke-Universität MagdeburgGermany
出 版 物：《Particuology》 (颗粒学报（英文版）)
年 卷 期：2024年第84卷第1期
页 面：136-144页
核心收录：
学科分类：081704[工学-应用化学] 08[工学] 0817[工学-化学工程与技术] 081701[工学-化学工程] 0714[理学-统计学（可授理学、经济学学位）] 0701[理学-数学]
基 金：Funded by the Deutsche Forschungsgemeinschaft(DFG German Research Foundation)-Project-ID 422037413-TRR 287
主 题：Heat transfer Discrete ordinates method Monte Carlo ray tracing
摘 要：Heat transfer plays a major role in many industrial processes taking place in packed *** accurate and reliable simulation of the heat exchange between particles is therefore crucial for a reliable operation and to optimize the processes in the *** discrete ordinates method(DOM)provides an established numerical technique to model radiative heat transfer in granular media that offers the possibility to consider the directional dependence of the radiation *** this work,DOM is compared with Monte Carlo ray tracing,which provides an alternative method for heat transfer ***-rically simple configurations are used to investigate the influence of the angular discretization on the accuracy of the results and the computation time in both *** obtained insights are then transferred to a more complex configuration of a quasi two-dimensional test rig consisting of metal rods for which also experimental results are *** results show that both DOM and Monte Carlo ray tracing allow for an accurate simulation of heat transfer in packed *** Carlo ray tracing requires thereby computation times that are surprisingly competitive(although still somewhat slower)compared to DOM and allows for an easier computation of highly accurate reference *** our preliminary comparison to the experimental test rig,Monte Carlo ray tracing also provides the advantage that it can more easily model highly specular materials such as stainless *** methods are comparable for diffuse materials such as magnesium oxide.
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