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	两方程k-g模式在全机大迎角流场中的应用研究
	肖志祥 ; 陈海昕 ; 符松 ; 李凤蔚 ; XIAO Zhi-xiang ; CHEN Hai-xin ; FU Song ; LI Feng-wei
	2010-06-08 ; 2010-06-08
关键词	两方程k-g模式 全机构形 多块网格 分区算法 two-equation k-g model twin-tail complete fighter configuration multi-block grids zonal methods V211.4
其他题名	Numerical simulation for transonic flows at high incidence around a complete fighter with two-equation k-g model
中文摘要	采用由两方程k-ω模式推导得到的k-g模式数值模拟完整飞机构形的跨声速大迎角流场。由于k-g模式具有勿需使用到物面的法向距离、简单的源项和直接的边界条件等特点,可以方便地推广到包含复杂外形的多块网格系统。与雷诺平均N av ier-S tokes方程组的求解方法类似,k-g模式方程也采用显式R unge-K u tta方法进行时间推进,用中心加人工粘性格式进行空间离散。采用相同的方法数值模拟NA SA TN D-712翼身组合体标模迎角为12.5°和26.2°的流场来检验程序的可靠性,与可获得的实验数据进行对比分析并获得满意结果。与此同时,还使用了B a ldw in-Lom ax代数模式以作比较。; The transonic flows at high angle of attack around a twin-tail complete fighter configurationhave been numerically simulated with a two-equation model k-g,which was derived from model k-ω.Model k-g,because of such advantages as no use of normal-to-wall distance,simple source terms andvery straightforward boundary conditions,can be easily extended to practical and complex configurations.According to the geometric characteristics of the fighter,three-block structured grids with point-to-point boundaries are generated by combination of algebraic and solving elliptic equation methods.On thebasis of multi-block mesh system,zonal method is employed to solve the equations of k-g model and themean flow.Concretely,the equations of model k-g are explicitly integrated similarly as the Reynolds av-eraged Navier-Stokes equations with central-differencing and artificial dissipation for each sub-zone.Thesimilar transonic flows at high angle of attack around the NASA TN D-712 standard wing-fuselage mod-el are used to validate the codes.The computational results are compared to available experiment dataand good agreement is achieved.At the same time,another wide-used turbulence model,the algebraicBaldwin-Lomax model,is also applied for these viscous flows.; 中国博士后科学基金; 国家自然科学基金(10477012)资助项目
语种	中文 ; 中文
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/51082]
专题	清华大学
推荐引用方式 GB/T 7714	肖志祥,陈海昕,符松,等. 两方程k-g模式在全机大迎角流场中的应用研究[J],2010, 2010.
APA	肖志祥.,陈海昕.,符松.,李凤蔚.,XIAO Zhi-xiang.,...&LI Feng-wei.(2010).两方程k-g模式在全机大迎角流场中的应用研究..
MLA	肖志祥,et al."两方程k-g模式在全机大迎角流场中的应用研究".(2010).

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