Flow Behavior in a Disk MHD Generator

Yoshinori Saito, Hiroyuki Yamasaki, Kazumi Tsunoda, Nobuhiro Harada, Kunio Yoshikawa, Shigeharu Kabashima, Susumu Shioda

Research output: Contribution to journalArticlepeer-review

Abstract

The flow behavior in a disk MHD generator was studied under high-MHD interaction conditions. Experiments were conducted using a blow-down facility, and argon seeded with cesium was used. The static pressure distribution, the flow velocity, fluctuations of the static pressure and the swirl were measured. The results show that when load resistances and seed fractions are high, a steep pressure increase appears at the upstream region in the MHD channel owing to the enhanced Lorentz force. On the other hand, the location of the pressure increase shifts downstream with the decrease of the Lorentz force. At the same time, the increment of pressure becomes small. A large fluctuation of the static pressure was observed at the upstream region where the steep pressure increase appeared. Characteristics of the pressure fluctuation are found to be analogous to those of the pseudoshock observed in channels without MHD interactions. Furthermore, it is confirmed that the swirl becomes large with the increase of the Hall current.

Original languageEnglish
Pages (from-to)996-1003
Number of pages8
JournalNihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Volume56
Issue number524
DOIs
Publication statusPublished - 1990

Keywords

  • Closed Cycle MHD
  • Disk Channel
  • Fluctuating Pressure
  • Shock Wave. Lorentz Force
  • Supersonic Flow
  • Swirl

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanical Engineering

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