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http://dx.doi.org/10.6108/KSPE.2017.21.6.021

Numerical Study on Mode Transition in a Scramjet Engine  

Ha, Jeong Ho (Department of Mechanical Engineering, Andong National University)
Das, Rajarshi (Department of Mechanical Engineering, Andong National University)
Ladeinde, Foluso (Department of Mechanical Engineering, The State University of New York)
Kim, Tae Ho (Department of Mechanical Engineering, Andong National University)
Kim, Heuy Dong (Department of Mechanical Engineering, Andong National University)
Publication Information
Journal of the Korean Society of Propulsion Engineers / v.21, no.6, 2017 , pp. 21-31 More about this Journal
Abstract
In the present study, theoretical and numerical analyses have been carried out to investigate the detailed flow characteristics during the mode transition. The theoretical analysis rearranged the knowledge of gasdynamics and the previous studies, and the numerical analysis has conducted to solve the 2D unsteady compressible Navier-Stokes equations with a fully implicit finite volume scheme. To validate the numerical analysis, the experiment was compared with it. The total temperature at the inlet of isolator and the hydrogen fuel equivalent ratio were changed to investigate their effects on the mode transition phenomenon. As the results, the numerical analysis reproduced well the experiment qualitatively, the increment in the hydrogen fuel equivalent ratio induced the scram-mode to ram-mode transition which is discontinuous with a non-allowable region, and the variation in the total temperature changed the boundary of the mode transition.
Keywords
Scramjet Engine; Dual Mode Ramjet; Mode Transition; Compressible Flow;
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