Nonstationary secondary flows in spherical layers

An experimental study of the change in secondary flow type at the main flow stability limit is presented. For spheres rotating in the same direction, it is found that the passage from the main flow to a three-dimensional secondary flow occurs via a nonstationary transition regime. The paper continues the study [1] in which the three-dimensional stability limit of the main flow in the space of the governing parameters was found. The stability limit consists of regions with specific types of secondary flows. A scheme of the changes in secondary flow type on crossing these regions is considered. Moscow. Translated from Izvestiya Rossiiskoi Akademii Nauk, Mekhanika Zhidkosti i Gaza, No. 3, pp. 201–204, May–June, 1998. The work received financial support from the Russian Foundation for Basic Research (project No.96-01-01340).