Mathematical Modeling of Near-Wall Flows of Two-Phase Mixture with Evaporating Droplets

IMECH-IR > 力学所知识产出(1956-2008)

	Mathematical Modeling of Near-Wall Flows of Two-Phase Mixture with Evaporating Droplets
	Wang BY(王柏懿); Osiptov AN; Wang, BY (reprint author), Chinese Acad Sci, Inst Mech, LMN, Beijing 100080, Peoples R China.
发表期刊	Applied Mathematics and Mechanics (English Edition)
	2002
卷号	23 期号:6 页码:576-582
ISSN	0253-4827
摘要	In the framework of the two-continuum approach, using the matched asymptotic expansion method, the equations of a laminar boundary layer in mist flows with evaporating droplets were derived and solved. The similarity criteria controlling the mist flows were determined. For the flow along a curvilinear surface, the forms of the boundary layer equations differ from the regimes of presence and absence of the droplet inertia deposition. The numerical results were presented for the vapor-droplet boundary layer in the neighborhood of a stagnation point of a hot blunt body. It is demonstrated that, due to evaporation, a droplet-free region develops near the wall inside the boundary layer. On the upper edge of this region, the droplet radius tends to zero and the droplet number density becomes much higher than that in the free stream. The combined effect of the droplet evaporation and accumulation results in a significant enhancement of the heat transfer on the surface even for small mass concentration of the droplets in the free stream. 在双连续介质理论框架下,采用匹配渐进展开方法导出并求解了具有蒸发液滴的汽雾流中层流边界层方程,给出了控制汽雾流的相似判据。对于沿曲面的流动,边界层方程的形式取决于是否存在液滴的惯性沉积。给出了热钝体验点附近蒸汽。液滴边界层的数值计算结果。它们表明：由于蒸发,在边界层内近壁处形成了一个无液滴区域；在该区上边界处,液滴半径趋于零而液滴数密度急剧增高。液滴蒸发及聚集的联合效应造成了表面热流的显著增加,甚至在自由来流中液滴质量浓度很低时此效应依然存在。
学科领域	力学
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000177574500005
WOS研究方向	Mathematics ; Mechanics
WOS类目	Mathematics, Applied ; Mechanics
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/16554
专题	力学所知识产出(1956-2008)
通讯作者	Wang, BY (reprint author), Chinese Acad Sci, Inst Mech, LMN, Beijing 100080, Peoples R China.
推荐引用方式 GB/T 7714	Wang BY,Osiptov AN,Wang, BY . Mathematical Modeling of Near-Wall Flows of Two-Phase Mixture with Evaporating Droplets[J]. Applied Mathematics and Mechanics (English Edition),2002,23,6,:576-582.
APA	王柏懿,Osiptov AN,&Wang, BY .(2002).Mathematical Modeling of Near-Wall Flows of Two-Phase Mixture with Evaporating Droplets.Applied Mathematics and Mechanics (English Edition),23(6),576-582.
MLA	王柏懿,et al."Mathematical Modeling of Near-Wall Flows of Two-Phase Mixture with Evaporating Droplets".Applied Mathematics and Mechanics (English Edition) 23.6(2002):576-582.

条目包含的文件		下载所有文件
文件名称/大小	文献类型	版本类型	开放类型	使用许可
具有蒸发液滴两相介质近壁流动的数学分析.（326KB）			开放获取	--	浏览下载