文章基本信息

标题：非等温場における都市域での近距離流動拡散現象の数値解析 : 複数の中高層ビル群, 煙突, 幹線道路をもつ複雑地形のケース
本地全文：下载
作者：武本行正 ; 小川束
期刊名称：四日市大学論集
印刷版ISSN：1340-5543
电子版ISSN：2433-4685
出版年度：1993
卷号：6
期号：1
页码：59-79
DOI：10.24584/jyu.6.1_59
出版社：四日市大学
摘要：The purpose of this paper is to present the flows with diffusion processes of air pollutant around building complex, chimney and main street in 3-D Cartesian coordinate system. The model is based on the three dimensional unsteady Reynolds equation for convective heat transfer and the diffusion equation for transport processes of air pollutant. Turbulence closure model is obtained by a two-eqation model consisting of transport equations for the turbulence kinetic energy (k) and its dissipation rate (ε). The solution procedure for the convective terms in the momentum equations, diffusion equation, energy euation and turbulence transport equations uses spatially third-order accurate upwind QUICK control-volume formulation that is extended to 3-D Cartesian coordinates or first-order upwind Donor-cell formulation. The computations for the turbulent flows and diffusion processes around a building complex are made with a computer code named QM3DTB/heat & diff building complex version. The results are in fine agreement with the experiments or other numerical computations in velocity profiles and air pollutant distributions.