SIMULATION STUDY OF THE MHD INSTABILITIES CAUSED BY THE SHEARED FLOW AT THE BOUNDARYLAYER OF THE MAGNETOSPHERE

Yan Ming; Pu Zu-yin

doi:10.11728/cjss1989.04.260

Volume 9 Issue 4

Dec. 1989

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Yan Ming, Pu Zu-yin. SIMULATION STUDY OF THE MHD INSTABILITIES CAUSED BY THE SHEARED FLOW AT THE BOUNDARYLAYER OF THE MAGNETOSPHERE[J]. Chinese Journal of Space Science, 1989, 9(4): 260-270. doi: 10.11728/cjss1989.04.260

Citation:

Yan Ming, Pu Zu-yin. SIMULATION STUDY OF THE MHD INSTABILITIES CAUSED BY THE SHEARED FLOW AT THE BOUNDARYLAYER OF THE MAGNETOSPHERE[J]. Chinese Journal of Space Science, 1989, 9(4): 260-270. doi: 10.11728/cjss1989.04.260

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SIMULATION STUDY OF THE MHD INSTABILITIES CAUSED BY THE SHEARED FLOW AT THE BOUNDARYLAYER OF THE MAGNETOSPHERE

doi: 10.11728/cjss1989.04.260 cstr: 32142.14.cjss1989.04.260

Yan Ming,
Pu Zu-yin

1.
Center for Space Science and Applied Research, Academia Sinica, Beijing
2.
Department of Geophysics, Peking University, Beijing

Received Date: 1988-10-22
Rev Recd Date: 1900-01-01
Publish Date: 1989-12-24

Abstract

Abstract

Atwo dimension incompressive MHDsimulation is carried out to study the nonlinear waves caused by Kelvin-Helmholtz instability. It is found that three are two attractors. When M_A>8, the system develops towards a steady state one; When M_A<8, it develops towards a periodic attractor. At the boundarylayer of the magnetosphere, the condition of M_A<8 is sa-tified. As a result the amplitude of the K-Hwaves should change periodically. The role of magnetic field in K-Hinstability is also studied. The magnetic field may make the transport of the momentum more efficient.