东南大学学报（自然科学版）2012，Vol.42Issue(6)：1164-1168,5.DOI:10.3969/j.issn.1001-0505.2012.06.026
核电站常规岛主厂房龙卷风荷载的CFD模拟
CFD simulation of tornado-induced wind loads on main powerhouse of conventional island in nuclear power plant
摘要
Abstract
Computational fluid dynamics (CFD) is employed to investigate tomado-induced wind loads on main powerhouse of conventional island in nuclear power plant. First, a cylindrical domain is used to simulate the field of tornado-induced wind, and the turbulent flow in the field is represented by Reynolds-averaged Navier-Stokes equations ( RANS). The velocity distributions and the pressure distributions of tornadoes are studied. The computational results are in good agreements with the data obtained from the Rankine vortex model, indicating the effectiveness of the method. Then, the wind load parameters on main powerhouse of conventional island under tornado are obtained by numerical simulations. The simulation results show that tornado-induced wind loads on main powerhouse of conventional island in nuclear power plant are mainly negative. Wind loads on the wall are smaller than those on the roof. Therefore, CFD simulation is suitable for the accurate simulation of tornado-induced wind loads on nuclear power plant. The results provide a technical support for nuclear power projects.关键词
核电站/龙卷风/兰金涡流模型/CFDKey words
nuclear power plant/ tornado/ Rankine vortex model/ computational fluid dynamics (CFD)分类
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汤卓,吕令毅..核电站常规岛主厂房龙卷风荷载的CFD模拟[J].东南大学学报（自然科学版）,2012,42(6):1164-1168,5.
