P. R. Ess

DoI Number XXX-YYY-ZZZ

Conference Number HiSST 2018-1104

In this paper the numerical study of constant volume combustion with associated pressure gain in a wave rotor configuration is presented. The setup was derived from conditions specified in the context of the project TREVAP, where future gas-turbine engines based on pressure-gain combustion of kerosene with air are investigated. In this work, a more sophisticated representation of the chemical reactions in the flow is employed than in the established literature for wave rotors. Because of the complexity of the combustion process in wave rotor based engines, strongly simplified simulations are performed. The two-dimensional simulations of reactive multi-species gas flow in a wave rotor contain up to twenty cycles in order to obtain a solution independent of transient start-up effects. For the conditions defined, a first understanding of the combustion process and resulting flow and wave patterns is obtained. Further, the formation of pollutants was found to be significantly influenced by the high temperatures present in the wave rotor. In the context of real engine operation, the issue of leakage was identified to be of potentially high importance, as the fuel-air mixture can penetrate into the areas around the wave rotor and cause problems with thermal load due to combustion.

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In Categories: HiSST 2018, Hypersonic Aerodynamics, Hypersonic Propulsion, Propulsion Systems and Components, Supersonic and Hypersonic Aircraft Design, Testing and Evaluation
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