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Characterization of the three-dimensional supersonic flow for the MHD generator

Content Provider	Springer Nature Link
Author	Lu, HaoYu Lee, ChunHian Dong, HaiTao
Copyright Year	2009
Abstract	A numerical procedure based on a five-wave MHD model associated with non-ideal, low magnetic Reynolds number MHD flows was developed in the present study for analyzing the flow fields in the MHD generator of a MHD bypass scramjet. The numerical procedure is composed of an entropy conditioned scheme for solving the non-homogeneous Navier-Stokes equations, in conjunction with an SOR method for solving the elliptic equation governing the electrical potential. It was found that a separation would take place near the downstream edge of the second electrode, where the local adverse pressure gradient is large, and the core of the flow field is characterized as a 2-D flow due to the Hartmann effects along the direction of the magnetic field. The electric current lines would be increasingly distorted as the magnetic interactive parameter increases, and even induce an eddy current. Induced eddy current was also found in the different cross-sections along the axial direction, all of these would definitely deteriorate the performance of the MHD generator. The cross-sectional M-shape velocity profile found along the axial direction between the insulating walls is responsible for the formation of the vortex flow at the corner of the insulator cross-section, which, in turn, induces the corner eddy current at the corner. A numerical parametric study was also performed, and the computed performance parameters for the MHD generator suggest that, in order to enhance the performance of MHD generator, the magnetic interaction parameter should be elevated.
Starting Page	534
Ending Page	545
Page Count	12
File Format	PDF
ISSN	16721799
Journal	Science in China Series G
Volume Number	52
Issue Number	4
e-ISSN	18622844
Language	English
Publisher	SP Science in China Press
Publisher Date	2009-04-01
Publisher Place	Heidelberg
Access Restriction	Subscribed
Subject Keyword	MHD generator entropy conditioned scheme SOR numerical simulation Astronomy Mechanics, Fluids, Thermodynamics Physics
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy

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