Date of Award

Fall 1984

Document Type

Thesis

Department

Mechanical & Aerospace Engineering

Program/Concentration

Mechanical Engineering

Committee Director

S. N. Tiwari

Committee Member

J. M. Kuhlman

Committee Member

S. K. Chaturvedi

Committee Member

G. M. Molen

Call Number for Print

Special Collections; LD4331.E56S74

Abstract

A two-dimensional, unsteady numerical model for analyzing the characteristics of gas flowing through a gas blown spark gap switch has been developed. The computational model is governed by the conservation equations of mass, momentum and energy in an inviscid, non-conducting, perfect, compressible fluid. The governing equations have been solved by using MacCormack's finite volume technique. The effects of rapid gas heating and subsequent changes in the fluid properties of the gas are examined in the high-pressure spark gap switch. The gas temperature, expansion velocity, density and pressure are calculated as functions of time. Air is the dielectric flowing through the spark gap channel, with an initial static pressure of 98 kPa. A high voltage of 100 kV is applied between the electrodes resulting in a current of 20 kA. The results obtained are qualitatively consistent with properties measured experimentally for a similar discharge.

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DOI

10.25777/bmnb-8y44

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