内扰因素对室内热分层的影响规律

The influence rule of inner interferential factors on the thermal stratification indoors

热压自然通风中,热源产生的浮力羽流使得室内存在热分层现象.房间内扰即热源因素是影响热分层的主要因素之一.本文对具有内热源的民用建筑,采用CFD技术,改变内扰因素对热压自然通风流场进行数值模拟,分析了不同热源工况下的温度场,得出了内扰因素对室内热分层现象的影响规律,为民用建筑自然通风系统的设计提供了理论参考.

In thermal natural ventilation, buoyancy plumes derived from heating source make the thermal stratification indoors. The in-house interferential factors（heating source factors） are important factors influencing thermal stratification. Aimed at the civil building with inside heating source, using the method of CFD,and changing the in-house interferential factors, this paper gives simulation on the fluid field of the thermal natural ventilation, analyses the temperature field in different conditions,and presents the influence rule of the in-house interferential factors on thermal stratification in room. The conclusions provide reference for the design of the natural ventilation system in civil building.