建筑群环境风场的特性及模拟——风环境模拟研究之一  

APPLICATIONS OF AERODYNAMICS IN THE ARCHITECTURAL WIND ENVIRONMENT——SIMULATION STUDIES OF WIND ENVIRONMENT I

作　　者：张伯寅[1] 桑建国[1] 吴国昌[1] 

机构地区：[1]北京大学湍流及复杂系统研究国家重点实验室,北京100871

出　　处：《力学与实践》2004年第3期1-9,共9页Mechanics in Engineering

摘　　要：建筑风环境是研究建筑物与城市风场相互作用的一门空气动力学与大气科学的交叉学科。将空气动力学惯用的风洞实验和流场显示研究手段,直接用于城市大气边界层和建筑物周边流场变化规律的研究。充分利用数值计算的广度和深度与风洞实验相结合,相互验证、相互补充。弥补了目前实验手段尚无法实现的研究。本文以北京商务中心区(CBD)为研究背景,论述了建筑风环境中大气边界层的模拟和具体建筑物风场的显示方法,并与数值计算进行对比,取得了非常一致的结果。为该地区的城市规划和环境保护,提出了科学依据。Architectural wind environment study is a cross discipline between aerodynamics and atmospheric science focusing on the interaction of architectures with the urban wind fields. In the study,wind tunnel tests and flow visualization approaches, as consistently used in aerodynamics, are applied for the investigation of the wind field distribution and variation in urban atmospheric boundary layers and around the architectures. The numerical computations and wind tunnel tests are mutually complementary and their combination can improve the experimental studies. In the present paper, the wind environment of Beijing Central Business District (CBD) is studied. The simulation of the urban atmospheric boundary layer in the wind tunnel and the method of the wind field visualization around architectures are described in detail. The experimental results are compared with numerical computations and they are in agreement. Some useful suggestions in the study are made for the improvement of urban planning and urban wind environment in CBD area.

关 键 词：建筑风环境 大气边界层模拟 流场显示 数值计算 空气动力学 

分 类 号：V211[航空宇航科学与技术—航空宇航推进理论与工程]