摘要
为研究特朗勃墙通风特性及优化可行性,基于计算流体动力学(CFD)技术,对某项目的特朗勃墙结构进行优化改进。在模型准确可靠的基础上,首先对特朗勃墙的风口形状做改进,其次结合风口面积进行联合优化。数值模拟采用SST湍流模型,计算模型共计17个,研究指标为排风口通风量、排风口压力、风口进出口空气温差及流速。研究表明:调整特朗勃墙风口几何形状及参数可达到优化目的;不同风口特朗勃墙结构内空气流态存在一定差异;特朗勃墙矩形风口比圆形或正方形风口更有利于提高通风性能;对于长宽比1∶4的矩形风口,随面积的增大,通风量增大,进出口流速和温差减小,流态分布更均匀;针对该工程实际问题,特朗勃墙风口采取长0.648 m、宽0.162 m的矩形结构,可提高排风口压力和通风性能。
In order to study the ventilation openingilation characteristics and optimization feasibility of Trombe wall,based on CFD technology,the structure of Trombe wall was optimized and improved.On the basis of the accuracy and reliability of the model,the shape of the ventilation opening of the Trombe wall was improved first,and then the joint optimization was carried out in combination with the area of the ventilation opening.The SST turbulence model was used in the numerical simulation.There were 17 calculation models in total.The research indicators were the ventilation rate of the exhaust outlet,the pressure of the exhaust outlet,the temperature difference and velocity of the air at the inlet and outlet.The research shows that adjusting the geometric form and parameters of the Trombe wall ventilation opening can achieve the purpose of optimization.There are some differences in the air flow pattern in the Trombe wall structure with different ventilation openings.The rectangular ventilation opening of Trombe wall is more conducive to improving the ventilation opening performance than the circular or square ventilation opening.For the rectangular ventilation opening with a length-width ratio of 1∶4,with the increase of area,the ventilation rate increases,the inlet and outlet velocity and temperature difference decrease,and the flow pattern distribution is more uniform.In view of the practical problems of the project,the Trombe wall ventilation opening adopts a rectangular structure with a length of 0.648 m and a width of 0.162 m,which can improve the pressure and ventilation performance of the exhaust ventilation opening.
作者
贵辛未
王树乐
贾书强
张千
吴迈
张涵昱
GUI Xin-wei;WANG Shu-le;JIA Shu-qiang;ZHANG Qian;WU Mai;ZHANG Han-yu(China Architecture Design&Research Group,100044,Beijing,China;School of Civil Engineering and Transportation,Hebei University of Technology,300401,Tianjin,China;China Academy of Urban Planning&Design,100044,Beijing,China)
出处
《建筑技术》
2025年第17期2109-2114,共6页
Architecture Technology
关键词
特朗勃墙
风口
结构优化
通风性能
绿色节能
Trombe wall
ventilation opening
structural optimization
ventilation performance
green and energy-saving
