Premium
Computational investigation of multi hydrogen jets at inclined supersonic flow
Author(s) -
Barzegar Gerdroodbary M.,
Moradi R.,
Babazadeh Houman
Publication year - 2021
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/er.5821
Subject(s) - supersonic speed , combustor , scramjet , mechanics , mixing (physics) , reynolds averaged navier–stokes equations , computational fluid dynamics , choked flow , jet (fluid) , turbulence , materials science , physics , chemistry , combustion , quantum mechanics , organic chemistry
Summary Scramjet design is directly associated with the fuel mixing inside the combustor. In this study, the influences of the free stream angle on the fuel mixing zone of eight microjets are fully investigated. This study mainly tries to disclose the importance of the fuel jet interaction with a supersonic free stream on penetration and distribution of hydrogen jets. The effects of jet paces and different free stream angles are fully examined in this work. For the computational study, CFD numerical method is applied to obtain the fuel jet structure at supersonic cross‐flow. RANS equations with SST turbulence scheme is employed for the simulation of our model. Our simulations show that a positive angle of supersonic incoming flow is effective for the uniform expansion of the fuel mixing zone inside the combustor. According to our findings, increasing the angles of the free stream declines the mixing zone when the fuel jet interaction of the last jets with main stream decreases. Our results indicate that mixing efficiency of ‐20° is about 30% more than other angles.