Nonstationary secondary flows in spherical layers
Tóm tắt
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.
Tài liệu tham khảo
A. A. Monakhov, "Limit of main flow stability in spherical layers,"Izv. Ross. Akad. Nauk, Mekh. Zhidk. Gaza, No. 4, 66 (1996).
G. I. Petrov, I. M. Yavorskaya, Yu. N. Belyaev, et al.,Modeling of Dynamic Processes in Planetary Atmospheres [in Russian], Prepr. No. 255, IKI AN SSSR, Moscow (1975).
I. M. Yavorskaya, Yu. N. Belyaev, and A. A. Monakhov, "A study of the stability and secondary flows in rotating spherical layers at arbitrary Rossby numbers,"Dokl. Akad. Nauk SSSR,237, No. 4, 804 (1977).
N. M. Astaf’eva, "Numerical modeling of a spherical Couette flow nonsymmetric about the equatorial plane,"Izv. Akad. Nauk SSSR, Mekh. Zhidk. Gaza, No. 3, 56 (1985).
O. Yu. Zikanov, "Numerical modeling of instabilities and secondary regimes in spherical Couette flow,"Izv. Ross. Akad. Nauk, Mekh. Zhidk. Gaza, No. 1, 3 (1995).
H. P. Greenspan,The Theory of Rotating Fluids, Cambridge Univ. Press, Cambridge (1969).
D. Joseph,Stability of Fluid Motions. I.II., Springer-Verlag, Berlin, Heidelberg, New York (1976).