摘要
大空间室内局部高温热源产生的热羽流对喷口侧送的分层空调气流组织形式有着不容忽视的影响作用,在现有热羽流与非等温射流相互作用理论分析及机理研究的基础上,利用缩尺模型实验台设计并搭建大空间全尺寸流场测量系统,分析了不同功率的点热源产生的热羽流对非等温水平射流的影响。研究表明:该实验系统可实现对流场直观、准确的全场测量,可用于更多工况流场速度的测量;热源的存在会对非等温射流流场在一定程度上产生影响,热源功率越大,热羽流对射流流场破坏程度越明显。
The thermal plume generated by the local heat source in the large space has an important influence on the air distribution mode of nozzle jet side air supply. Based on the present theoretical analysis and mechanism research,an experimental research on the interaction between thermal plume and non-isothermal jet is reported. The reduced-scale model experiment platform is used and the measurement system of full-size flow field is designed in it. The influence of the power of indoor heat sources on the non-isothermal air jet is investigated experimentally. The results indicate that the experimental system can be used to measure the flow field accurately and directly,it also can be used to measure the velocity of flow field in more working conditions. The heat source will influence the non-isothermal jet flow field to a certain extent. With the increase of heat source power,the damage degree of the thermal plume to the jet flow field is more obvious.
作者
张玉洁
王昕
堵光耀
许宇坤
ZHANG Yu-jie;WANG Xin;DU Guang-yao;XU Yu-kun(University of Shanghai for Science and Technology,Shanghai 200093,China)
出处
《建筑节能》
CAS
2019年第4期41-46,共6页
BUILDING ENERGY EFFICIENCY
基金
上海市自然科学基金项目(16ZR1423200)
关键词
非等温射流
热羽流
PIV
流场测量
non-isothermal jet
thermal Plume
PIV
flow field measurement
