三维分离模式与开式分离研究

 <正> 1.问题的提出 对三维分离的研究仅仅是近三十年的事,曾先后提出过多种分离模式。目前,为大家所应用的有两种模式。一种以Maskell为代表,他们认为分离线是其两侧极限流线的包络,通常称为包络模式。另一种以Lighthill为代表,他们认为分离线开始于鞍型奇点,结束于分离结点,分离线本身是一条流线,同时也是附近其它极限流线的渐近

A STUDY OF THE THREE-DIMENSIONAL SEPARATION MODE AND THE OPEN SEPARATION

Based on the analysis of the composition and the characteristics of a 3-D separated sheet, it is found that the 3-D separation phenomenon can be described in terms of either Maskell's mode or the Lighthiil's mode. However.it must be pointed out that the Ma-skell's mode can only be used for describing an open separation, whereas the Lighthill's mode for a closed separation, ft is also shown in the paper that the separated line for the open separation starts at a normal point, where the streamline is tangential to and leaves from the surface of a body.