TY - JOUR

T1 - Plasma fluctuations in a flow field with a steep increase in static pressure in a closed cycle disk MHD generator

AU - Tsunoda, Kazumi

AU - Tanaka, Motofumi

AU - Kabashima, Shigeharu

PY - 1997

Y1 - 1997

N2 - Plasma fluctuations in a flow field with a steep increase in static pressure in a closed cycle disk magnetohydrodynamic (MHD) generator, caused by varying the pressure at the channel exit, were examined by means of a quasi-one-dimensional numerical simulation. In order to compute the plasma properties at the exit boundary for subsonic flow, the characteristic theory where the effects of the MHD interaction are taken into account was developed. The computational results indicated that the fluctuations of the gas dynamic and electrical properties propagated upstream at a speed of sound relative to the local plasma flow velocity. The time variation of the output Hall voltage due to the application of pressure pulse decreased with time and, finally, the Hall voltage reached almost the same level as that for the steady-state.

AB - Plasma fluctuations in a flow field with a steep increase in static pressure in a closed cycle disk magnetohydrodynamic (MHD) generator, caused by varying the pressure at the channel exit, were examined by means of a quasi-one-dimensional numerical simulation. In order to compute the plasma properties at the exit boundary for subsonic flow, the characteristic theory where the effects of the MHD interaction are taken into account was developed. The computational results indicated that the fluctuations of the gas dynamic and electrical properties propagated upstream at a speed of sound relative to the local plasma flow velocity. The time variation of the output Hall voltage due to the application of pressure pulse decreased with time and, finally, the Hall voltage reached almost the same level as that for the steady-state.

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U2 - 10.1299/kikaib.63.3009

DO - 10.1299/kikaib.63.3009

M3 - Article

AN - SCOPUS:0031221093

SN - 0387-5016

VL - 63

SP - 3009

EP - 3016

JO - Nippon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B

JF - Nippon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B

IS - 613

ER -