文章基本信息

标题：Numerical study of a turbulent jet flow issued from lobed diffuser
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作者：Boulenouar M. ; Meslem A. ; Imine B. 等
期刊名称：Mechanika
印刷版ISSN：1392-1207
出版年度：2011
卷号：17
期号：2
页码：168-171
DOI：10.5755/j01.mech.17.2.333
语种：English
出版社：Kauno Technologijos Universitetas
摘要：The physics of turbulent jet is of considerable in-terest from both fundamental and practical aspects. Forfundamental aspect, it has been widely suggested that themixing process is intimately connected with turbulencetransient. Furthermore, the nozzle geometry and flow ini-tial perturbations have profound influence on its generationand transition [1]. For practical aspect, the mixing processgoverns jet noise level of airplane and vehicles, spread ofpollutant at industrial sites, mixing rate in combustionchambers and heating, ventilation and air-conditioning(HVAC) systems in buildings. The turbulent jet develop-ment is very sensitive the diffuser geometry [2-6], which isthe main object of the present work. This technique isnamed passive control. It is considered one of the mostpromising methods for improving HVAC systems in termsof energy conceptions and thermal comfort of the occu-pants. This technique is simple and costless mechanicalmodification of the boundary geometry of classical exist-ing diffusers. Lobed diffusers widely used in aeronautic oraerospace applications represent an attractive method forHVAC in buildings.