Numerical studies on swirling of internal fire whirls with experimental justifications
作者机构：Midea Residential Air Conditioner DivisionFoshanGuangdongChina College of Aerospace and Civil EngineeringHarbin Engineering UniversityHarbinHeilongjiangChina Department of Building Services EngineeringThe Hong Kong Polytechnic UniversityHunghomKowloonHong KongChina
出 版 物：《Building Simulation》 (建筑模拟（英文）)
年 卷 期：2021年第14卷第5期
页 面：1499-1509页
核心收录：
学科分类：080704[工学-流体机械及工程] 080103[工学-流体力学] 08[工学] 0807[工学-动力工程及工程热物理] 0801[工学-力学（可授工学、理学学位）]
基 金：sponsored by the National Natural Science Foundation of China(No.11402061) The work described in this paper was also partially supported by a grant from the Research Grants Council of the Hong Kong Special Administrative Region,China,for the project“A study on electric and magnetic effects associated with an internal fire whirl in a vertical shaft”(Project No.PolyU 15206215)with account number B-Q47D
主 题：internal fire whirl large eddy simulation vertical structure flame surface
摘 要：Numerical studies on internal fire whirls(IFW)generated in a vertical shaft model with a single corner gap were reported in this *** generation of IFW,burning rate of fuel and temperature were studied experimentally *** simulations on medium-scale IFW were carried out using a fully-coupled large eddy simulation incorporating subgrid scale turbulence and a fire source with heat release rates compiled from experimental *** transient flame shape was studied and then simulated numerically by using *** dynamic phenomena of generation and development of IFW were simulated and then compared with experimental *** predicted results were validated by comparing with experimental data,which demonstrated that an IFW can be simulated by Computational Fluid *** results for flame surface,temperature,and flame length agreed well with the experimental *** IFW flame region and intermittent region were longer than those for an ordinary pool *** modified empirical formula for centerline temperature was *** of vertical and tangential velocity in axial and radial directions were also *** vortex core radius was found to be determined by the fuel bed *** field was not measured extensively due to resources *** measured temperature distribution with predictions is acceptable because temperature is related to the heat release rate,air flow and pressure gradient.
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