QQ客服 官方微博 反馈留言

	Generalized Kutta–Joukowski theorem for multi-vortex and multi-airfoil flow with vortex production——A general model
	Bai Chenyuan ; Li Juan ; Wu Ziniu ; Bai Chenyuan ; Li Juan ; Wu Ziniu
	2016-03-30 ; 2016-03-30
关键词	Drag force Lift force Multibody Multiple vortices Vortex production V224
其他题名	Generalized Kutta–Joukowski theorem for multi-vortex and multi-airfoil flow with vortex production——A general model
中文摘要	By using a special momentum approach and with the help of interchange between singularity velocity and induced flow velocity, we derive in a physical way explicit force formulas for twodimensional inviscid flow involving multiple bound and free vortices, multiple airfoils, and vortex production. These force formulas hold individually for each airfoil thus allowing for force decomposition, and the contributions to forces from singularities(such as bound and image vortices,sources, and doublets) and bodies out of an airfoil are related to their induced velocities at the locations of singularities inside this airfoil. The force contribution due to vortex production is related to the vortex production rate and the distance between each pair of vortices in production, thus frameindependent. The formulas are validated against a number of standard problems. These force formulas, which generalize the classic Kutta–Joukowski theorem(for a single bound vortex) and the recent generalized Lagally theorem(for problems without a bound vortex and vortex production) to more general cases, can be used to identify or understand the roles of outside vortices and bodies on the forces of the actual body, optimize arrangement of outside vortices and bodies for force enhancement or reduction, and derive analytical force formulas once the flow field is given or known.; By using a special momentum approach and with the help of interchange between singularity velocity and induced flow velocity, we derive in a physical way explicit force formulas for twodimensional inviscid flow involving multiple bound and free vortices, multiple airfoils, and vortex production. These force formulas hold individually for each airfoil thus allowing for force decomposition, and the contributions to forces from singularities(such as bound and image vortices,sources, and doublets) and bodies out of an airfoil are related to their induced velocities at the locations of singularities inside this airfoil. The force contribution due to vortex production is related to the vortex production rate and the distance between each pair of vortices in production, thus frameindependent. The formulas are validated against a number of standard problems. These force formulas, which generalize the classic Kutta–Joukowski theorem(for a single bound vortex) and the recent generalized Lagally theorem(for problems without a bound vortex and vortex production) to more general cases, can be used to identify or understand the roles of outside vortices and bodies on the forces of the actual body, optimize arrangement of outside vortices and bodies for force enhancement or reduction, and derive analytical force formulas once the flow field is given or known.
语种	英语 ; 英语
内容类型	期刊论文
源URL	[http://ir.lib.tsinghua.edu.cn/ir/item.do?handle=123456789/143759]
专题	清华大学
推荐引用方式 GB/T 7714	Bai Chenyuan,Li Juan,Wu Ziniu,et al. Generalized Kutta–Joukowski theorem for multi-vortex and multi-airfoil flow with vortex production——A general model[J],2016, 2016.
APA	Bai Chenyuan,Li Juan,Wu Ziniu,Bai Chenyuan,Li Juan,&Wu Ziniu.(2016).Generalized Kutta–Joukowski theorem for multi-vortex and multi-airfoil flow with vortex production——A general model..
MLA	Bai Chenyuan,et al."Generalized Kutta–Joukowski theorem for multi-vortex and multi-airfoil flow with vortex production——A general model".(2016).

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。