高大空间气流组织设计CFD辅助方法及应用  

CFD Auxiliary Method and Application for Air Distribution Design in Tall Space

作　　者：王维文 周文和[1] 韩晓菲 Wang Weiwen;Zhou Wenhe;Han Xiaofei

机构地区：[1]兰州交通大学 [2]中冶西北工程技术有限公司建筑设计研究院

出　　处：《洁净与空调技术》2022年第3期99-103,共5页Contamination Control & Air-Conditioning Technology

摘　　要：高大空间建筑能耗在我国逐年递增的社会总能耗中占有相当大的份额,关乎节能减排工作的成败。而流体动力学计算机模拟技术(CFD)可有效用于空调气流组织方案的模拟优化,为合理设计及系统运行提供参考依据。以兰州市某儿童游乐馆为研究对象,由于夏季其室内热环境易受室外太阳辐射变化影响较大,所以利用Gambit软件先建立儿童馆流固耦合非稳态传热模型,接着通过非稳态模拟,得到了兰州地区夏季最不利日工作时间段(08:00-18:00)的逐时PMV-PPD分布情况,并对空调系统的运行提出了建议,结果可为类似建筑工程提供借鉴。同时,亦对兰州新区某活动中心布点测试,并在同一边界条件下进行数值模拟计算,将得到的实测数据与模拟结果对比分析,以验证数值模型和方法的准确性。The energy consumption of tall space buildings occupies a considerable share in the total energy consumption increasing year by year in China,which is related to the success or failure of energy-saving and emission reduction work.The fluid dynamics computer simulation technology(CFD)can be effectively used to simulate and optimize the air distribution scheme of air conditioning,and provide a reference for rational design and system operation.This paper takes a children’s playground in Lanzhou as the research object.Since its indoor thermal environment is vulnerable to outdoor solar radiation changes in summer,Gambit software is used to establish a fluid-structure coupling unsteady heat transfer model for children’s playground,and then through unsteady simulation,The distribution of hourly PMV-PPD during the most unfavorable working period(8:00~18:00)in summer in Lanzhou was obtained,and some suggestions for the operation of air conditioning system were put forward.The results can be used for reference for similar construction projects.At the same time,an activity center in Lanzhou New Area was also tested,and numerical simulation was carried out under the same boundary conditions.The measured data obtained were compared and analyzed with the simulation results to verify the accuracy of the numerical model and method in this paper.

关 键 词：高大空间 气流组织 CFD 非稳态模拟 PMV-PPD 

分 类 号：TU834.31[建筑科学—供热、供燃气、通风及空调工程]