外场风速和建筑空间条件对自然通风的影响  

The Effect of Outfield Wind Boundary Condition and Rrchitectural Space to Natural Ventilation

作　　者：王亮[1] 谭洪卫[1] 季亮[1] 

机构地区：[1]同济大学机械工程学院

出　　处：《建筑热能通风空调》2009年第1期50-53,17,共5页Building Energy & Environment

基　　金：国家自然科学基金项目(No:50778128)

摘　　要：本文选取外场风速边界条件及建筑空间结构条件为考察对象,探讨建筑自然通风效果的影响。重点考察了非稳态风速边界条件问题,并参照新修订的《工作场所有害因素职业接触限值》中的时间加权平均浓度、短时间接触浓度指标和评价方法,基于CFD数值模拟技术对比分析了稳态与非稳态外场风速边界条件下的通风效果差异,结果表明两种风速边界下的通风效果存在明显差异,差异的相对大小与建筑的结构相关。This paper chooses wind boundary condition and architectural space as investigating subjects. The ventilation effect has been investigated. The paper investigates the unsteady wind boundary condition ventilation especially. The relative concepts such as permissible concentration-time weighted average and permissible concentration-short term exposure limit refer to ＂Occupational Exposure Limits for Hazardous Agents in the Workplace＂. The paper analyzes the ventilation effect differences under steady wind boundary condition and unsteady wind boundary condition. The results indicate that the differences are relative to the architecture condition.

关 键 词：CFD 自然通风 时间加权平均浓度 短时间接触浓度 非稳态边界条件 

分 类 号：TU834.1[建筑科学—供热、供燃气、通风及空调工程]