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Thermophysics and Aeromechanics

2009 year, number 2

Exergy analysis of ramjet

A.F. Latypov
Khristianovich Institute of Theoretical and Applied Mechanics SB RAS,
Keywords: exergy, diagram, ramjet, heat supply condition, pulsed-periodic energy supply
Pages: 303-313


An exergy analysis of possible regimes of energy supply to the air flow in the ramjet duct is carried out. A condition for the supply of a given heat amount to supersonic flow and a condition of the passage across the sound velocity are obtained for a duct with variable cross-sectional area. An analysis of the flow in a model ramjet duct at a pulsed-periodic energy supply is carried out. For a clear demonstration of possible schemes of heat supply in such a duct, a diagram in the temperature-exergy coordinates is proposed. A duct configuration in which the heat supply to supersonic flow is realized with regard for the limitation of the gas static temperature is proposed.