水资源与水工程学报Issue(2)：161-165,5.DOI:10.11705/j.issn.1672-643X.2015.02.30
基于 POD 方法的圆型喷口射流速度场结构分析
Structure analysis in circular jet shear layer velocity field based on POD method
摘要
Abstract
The air jet entrainment of stratified air conditioning system in large space building can cause the transfer of heat from the upper part of conditioned area to the lower part of non air conditioning area , which is one of the reasons leading to the increased load of air conditioning system .The article built the platform of saline model experiment of circular jet movement ,and used the particle velocity measurement system ( PIV) to extract information of nozzle flow field near the shear layer entrainment velocity vector field.With the help of proper orthogonal decomposition method (POD), it analyzed the coherent struc-tures and energy distribution , vertical and horizontal velocity characteristic value proportion in the shear layer.The system can provide experimental and theoretical reference for the later research of transfer heat in large space caused by jet entrainment .关键词
盐水实验台/特征正交分解POD/流场相干结构/能量分布/竖向与横向速度特征值Key words
saline experimental platform/proper orthogonal decomposition/flow field structure/energy distribution/characteristic value of vertical and horizontal velocity分类
建筑与水利引用本文复制引用
王昕,马静思,刘友勤..基于 POD 方法的圆型喷口射流速度场结构分析[J].水资源与水工程学报,2015,(2):161-165,5.基金项目
国家自然科学基金项目（51108263）；沪江基金资助 （）
