Fluid dynamic and heat transfer parameters in an urban canyon

被引：52

作者：

Bottillo, S. ^{[1
]}

Vollaro, A. De Lieto ^{[1
]}

Galli, G. ^{[1
]}

Vallati, A. ^{[1
]}

机构：

[1] Univ Roma La Sapienza, DIAEE, I-00184 Rome, Italy

来源：

SOLAR ENERGY | 2014年 / 99卷

关键词：

Urban microclimate; Urban canyon; CFD; Solar radiation; TEMPERATURE WALL FUNCTION; BUILDING FACADES; STREET CANYONS; CFD SIMULATION; WIND-TUNNEL; FLOW; ENVIRONMENT; IMPACT; MODEL; LAYER;

D O I：

10.1016/j.solener.2013.10.031

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

A microclimatic analysis in a typical urban configuration, has been carried out. Using a CFD method, a N-S oriented urban street canyon, with a given H/W ratio, has been examined. The standard k-epsilon turbulence model has been used to simulate a three-dimensional flow field and to calculate the thermo-fluid dynamics parameters that characterize the street canyon. The aim of this study is to investigate the effect of solar radiation on the flow field and thermal parameters within the canyon. A comparison between transient and stationary simulations has been performed to evaluate the importance of considering the thermal inertia effects in an urban street canyon study. The dynamic characteristics of the 3D flow in the canyon have been compared with other numerical simulations and experimental results. Furthermore a thermo-fluid dynamic analysis of natural convection effects on the heat transfer coefficient and turbulent kinetic energy, has been carried out. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：1 / 10

页数：10

共 27 条

[1] Analysis of convective heat transfer at building facades in street canyons and its influence on the predictions of space cooling demand in buildings [J].