Heat and Mass Transfer Research Journal (HMTRJ)

Research Article

The Effects of Pressure Fluctuations on the Hydrogen Jet Combustion in a Supersonic Cross Flow

A. M. Tahsini

Tehran, Iran

Submitted: August 26, 2017; Revised: February 15, 2018; Accepted: February 17, 2018

Abstract

The aim of the present paper is to analyze the effect of pressure fluctuations on the combustion efficiency of hydrogen fuel injected into the supersonic oxidizing cross flow. The existing pressure fluctuations at inlet oxidizer flow and also at fuel jet flow are considered with different frequencies, and for two different situations: with and without inlet standing oblique shock wave. The two-dimensional finite volume unsteady flow solver is developed to simulate the compressible reacting supersonic flow field in the combustor, and to predict the time-variation of the combustion efficiency due to the imposed fluctuations. The results show that the response of the considered reacting flow field depends on the fluctuations’ frequency and the existence of the inlet shock wave.

Keywords

Combustion efficiency, Frequency, Hydrogen, Jet in Cross flow, Numerical study, Oblique shock, Pressure fluctuations, Response, Supersonic, Transient simulation.

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