Vortex Identification in the Flow Field of Opposed Jet Occupied Enclosure Space

In a occupied enclosure space formed by multiple opposed jet outlets, understanding the vortex structures plays a crucial role in controlling the spread of viruses and pollutants. This study constructed a scaled model of a occupied enclosure space with opposing jet flows, incorporating a heated floo...

Full description

Saved in:
Bibliographic Details
Published inZhìlěng xuébào
Main Authors 卢浩阳, 王聪聪, 陈红兵, 张岩, 李春阳, 刘宇航, 赵立国
Format Journal Article
LanguageChinese
Published Journal of Refrigeration Magazines Agency Co., Ltd 01.01.2025
Subjects
enclosed space
opposed impinging jet
ventilation flow field
vortex identification
Online AccessGet full text
ISSN0253-4339

Cover

More Information
Summary:In a occupied enclosure space formed by multiple opposed jet outlets, understanding the vortex structures plays a crucial role in controlling the spread of viruses and pollutants. This study constructed a scaled model of a occupied enclosure space with opposing jet flows, incorporating a heated floor as a heat source to create thermal plumes under cooling conditions. Particle Image Velocimetry (PIV) system was employed to measure the flow field under isothermal and cooling conditions. Studying the Turbulent Characteristics of the Flow Field from the Vortex Perspective, comparing the identification performance of different vortex identification algorithms. The Liutex vortex identification method was applied to analyze the vortex motion within one oscillation period, revealing distinct strengths in counterclockwise and clockwise directions, with maximum intensities of 50 and 110 s?1, respectively. The study concluded that the motion, merging, and annihilation of vortices influence the flow field structure, with
ISSN:0253-4339