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Heat and mass transfer in gaseous film cooling(PDF)

《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]

Issue:
2008年02期
Page:
31-36
Research Field:
研究与设计
Publishing date:

Info

Title:
Heat and mass transfer in gaseous film cooling
Author(s):
Wang Jianl; Sun Bing1; Wei Yukun2
1 School of Astronautics，Beijing University of Aeronautics and Astronautics，Beijing，100083，China； 2 Simulator Training Center of NO．4 Flying College of the Air Force of PLA，Shijiazhuang，05007 1，China
Keywords:
supersonic; gaseous film cooling; numerical simulation; adiabatic film cooling effectiveness; heat and mass transfer
PACS:
TKl24
DOI:
-
Abstract:
The SST k-w turbulence model is employed to compute the 3D viscous mixing flow field in order to investigate the supersonic gaseous hydrogen film cooling injected tangentially． Results show that blowing rate is an important factor，along with the increase of which，the adiabatic film cooling effectiveness is enhanced．The distribution of adiabatic film cooling effectiveness on concave iS better than convex and plate．which iS different from subsonic film cooling．The film cooling effectiveness is different between the centerline and side ones under discrete coolant channels，which can be avoided by an appropriate口angle．

References:

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[2]韩启祥，何小明，谈浩元，等．超音速射流气膜冷却效 果的试验研究[J]．南京航空航天大学学报，1998，30(5)： 24-28．
[3]朱惠人，许都纯，刘松龄．气膜孑L形状对排孑L下游冷却效 率的影响[J]．航空学报，2002，23(1)：76—79． [4l Yang Xiaobo,BadcocktKJ，Richards BE et at ANumerical S tudy of Hypersonic Turbulent Film Cooling [S]．AIAA 2005-386，
[5]5 Wang Jian，Sun Bing．Numerical Simulation of Supersonic Gaseous Film Cooling[C]．The 1hh ISCOP,Beijing， 2007．
[6]袁锋，李珑，竺晓程，等．曲面气膜冷却效率的数值模拟 及影响因素研究[J]．动力工程，2005，25(sup)：620—624．
[7]李军，董志锐，林宇震，等．多斜孔气膜冷却壁表面换热 系数实验研究[J]．推进技术，2000，21(5)：45-48．
[8]王扬平，姜培学．超音速气膜冷却及其受斜激波的影响 [J]．工程热物理学报，2007，28(1)：137—139．
[9]阎超．计算流体力学方法及应用[M]．北京：北京航空航 天大学出版社，2006．
[10]Takita K Masuya G．Effects of Combustion and Shock Impingement on Supersonic Film Cooling by Hydrogen[C] ／／35th AIAA／ASMF／SAE／ASEE Joint Propulsion Confefence and Exhibit．Los Angeles，California,1999．

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Last Update: 1900-01-01