Numerical prediction on performance of closed cycle disk MHD generator

Book · Tue Dec 31 04:00:00 EST 1996

OSTI ID:442747

Okubo, Masaaki; Yamasaki, Hiroyuki ^[1]

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1. Tokyo Inst. of Technology (Japan). Research Lab. for Nuclear Reactors

Numerical calculations were made on nonequilibrium MHD flows in a disk MHD generator in a strong magnetic field. Main objectives of the present study are to develop a numerical simulator for the present closed cycle disk MHD generator and to obtain knowledge for design of a new disk MHD generator with high performance, especially high adiabatic efficiency. The basic equations were quasi one-dimensional equations which govern the behavior of nonequilibrium two-temperature plasma MHD flow. TVD MacCormack method was first applied for the present system. The steady and stable solutions in the relatively wide range of operating conditions of the generator were obtained due to the high resolution and stable TVD scheme. The distribution of several physical quantities and the basic performances agreed well with the experimental data. A shock wave was induced in the nozzle where an ionization proceeded rapidly. As a result, the stagnation pressure loss reached 45--55% at the inlet of the MHD channel.

• OSTI ID: 442747
• Report Number(s): CONF-960805--
• Country of Publication: United States
• Language: English

Related Subjects

30 DIRECT ENERGY CONVERSION
CLOSED-CYCLE MHD GENERATORS
DISK MHD GENERATORS
NON-EQUILIBRIUM PLASMA
NUMERICAL ANALYSIS
PERFORMANCE
THEORETICAL DATA