Influence of turbulence modeling on combustor flowfield in scramjet mode of rbcc engine

Joseph Salloum, Michael Candon, Hideaki Ogawa, Masatoshi Kodera

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

抄録

Rocket-based Combined-Cycle (RBCC) engines offer promise for efficient and flexible propulsion for space transportation over a wide Mach number range by combining rocket and airbreathing propulsion technologies. To achieve this an RBCC engine uses four different modes of operation, i.e., ejector, ramjet, scramjet and rocket modes, during the ascent phase. The engine must thus make effective transition from subsonic to supersonic combustion, i.e., ramjet to scramjet mode during operation. The study is conducted to investigate the effects of turbulence modeling on the simulation of the RBCC combustor flowfield and the prediction of the combustor performance in the scramjet mode. A two-dimensional RBCC configuration has been considered numerically, using hydrogen as the fuel supplied through injectors at the divergent top wall and horizontal floor. Combustion has been found to occur predominantly near the top injector and along the shear layer downstream, with its extent being considerably sensitive to the choice of turbulent Schmidt number and turbulence model. The performance of the combustor crucially depends on these attributes subsequently due to complex flow phenomena and interactions as well as counteracting behavior of pressure and viscous forces.

本文言語英語
ホスト出版物のタイトル23rd AIAA International Space Planes and Hypersonic Systems and Technologies Conference, 2020
出版社American Institute of Aeronautics and Astronautics Inc, AIAA
ISBN(印刷版)9781624106002
出版ステータス出版済み - 2020
イベント23rd AIAA International Space Planes and Hypersonic Systems and Technologies Conference, 2020 - Montreal, カナダ
継続期間: 3 10 20203 12 2020

出版物シリーズ

名前23rd AIAA International Space Planes and Hypersonic Systems and Technologies Conference, 2020

会議

会議23rd AIAA International Space Planes and Hypersonic Systems and Technologies Conference, 2020
Countryカナダ
CityMontreal
Period3/10/203/12/20

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering
  • Space and Planetary Science
  • Control and Systems Engineering

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