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http://dx.doi.org/10.6108/KSPE.2014.18.3.034

Numerical Study for Design of Center-body Diffuser  

Kim, Jong Rok (R&D Center, Aerospace Division, Korean Air)
Kim, Jae-Soo (Department of Aerospace Engineering, Chosun University)
Publication Information
Journal of the Korean Society of Propulsion Engineers / v.18, no.3, 2014 , pp. 34-39 More about this Journal
Abstract
A study is analyzed on the design factor of center-body diffuser and performed on conceptual design of center-body diffuser with computational fluid dynamic. The flow field of center-body diffuser is calculated using axisymmetric two-dimensional Navier-Stokes equation with $k-{\epsilon}$ turbulencemodel. The center-body diffuser is compared with second throat exhaust diffuser in terms of starting pressure, the degree of vacuum pressure and the design factors. The counter flow jet on cone-tip of the center-body is applied for thermal protection system in the center-body diffuser.
Keywords
Rocket Engine; Supersonic Exhaust Diffuser; Altitude Simulation; CBD(Center-body Diffuser); Counter-flow jet;
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