"

Cookies ussage consent

Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our site without changing the browser settings you grant us permission to store that information on your device.

I agree, do not show this message again.

Three-dimensional analysis of electric current distribution in a small-scale scramjet driven DCW MHD generator

MOTOO ISHIKAWA1,* , DAIKI GOTOH1, TORU TAKAHASHI1, TAKAYASU FUJINO1

Affiliation

  1. Graduate School of Systems and Information Engineering, University of Tsukuba Tsukuba, 305-8573, Japan

Abstract

An experimental scramjet driven MHD generator developed under the Hypersonic Vehicle Electric Power System (HVEPS) program has been numerically simulated and analyzed using a fully coupled three dimensional MHD generator computer code. The three dimensional simulations have shown very good agreement between the experimental and numerical results in the active MHD region when a scalar electrical conductivity deficit of 81.3% of ideal is imposed. The major power performance loss mechanism identified in the three dimensional simulation is relatively large near electrode voltage drops on the order of 100 Volts with a ratio to the induced MHD voltage of about 0.3. The analysis shows detail of rather strong eddy-like current that is induced in PTO regions. This eddy-like current may interact with the load current running in and out of the PTO frames, resulting in the power degradation..

Keywords

Scramjet driven DCW MHD generator, Three-dimensional analysis, Power take-off region, Electrode voltage drop, Eddy current.

Submitted at: March 13, 2008
Accepted at: June 9, 2008

Citation

MOTOO ISHIKAWA, DAIKI GOTOH, TORU TAKAHASHI, TAKAYASU FUJINO, Three-dimensional analysis of electric current distribution in a small-scale scramjet driven DCW MHD generator, Journal of Optoelectronics and Advanced Materials Vol. 10, Iss. 6, pp. 1442-1447 (2008)