کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
293304 511124 2007 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
LES analysis of unsteady characteristics of conical vortex on a flat roof
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
پیش نمایش صفحه اول مقاله
LES analysis of unsteady characteristics of conical vortex on a flat roof
چکیده انگلیسی

This paper discusses the unsteady characteristics of the conical vortex on a flat roof on the basis of numerical results by large eddy simulation (LES) when flow attacks oblique to the roof. There have been a number of researches regarding the pressure characteristics associated with the motion of the conical vortices. These kind of studies have been performed by wind tunnel experiments for many years. On the other hand, recent advancement of Computational Fluid Dynamic (CFD) has made it possible to easily simulate the flow characteristics around a building. So, it has been expected that CFD become a powerful tool to investigate the pressure characteristics of a building associated with the flow structure. However, the applicability of CFD to the flow around a flat roof has not reached complete understanding. First, the present LES model is validated for the prediction of the pressure characteristics on a roof for oblique flow-through comparison with the previous experimental data. Next, the unsteady motions of the conical vortex are investigated by use of a flow visualization technique.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Wind Engineering and Industrial Aerodynamics - Volume 96, Issues 10–11, October–November 2008, Pages 2007–2018
نویسندگان
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