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http://dx.doi.org/10.6108/KSPE.2014.18.5.070

A Numerical Study on Flow and Heat Transfer Characteristics of Supersonic Second Throat Exhaust Diffuser for High Altitude Simulation  

Yim, Kyungjin (Department of Mechanical Engineering, Graduate School. Chungnam National University)
Kim, Hongjip (Department of Mechanical Engineering, Chungnam National University)
Kim, Seunghan (Propulsion Test Team, Korea Aerospace Research Institute)
Publication Information
Journal of the Korean Society of Propulsion Engineers / v.18, no.5, 2014 , pp. 70-78 More about this Journal
Abstract
A numerical study has been conducted to investigate flow and heat transfer characteristics of supersonic second throat exhaust diffusers for high altitude simulation. By changing pressure and configuration, flow and cooling characteristics of the diffuser have been studied. At the normal operation of the diffuser, there were high temperature regions over 3,000 K without cooling, especially near wall and in subsonic diffuser part. If the cooling system of the diffuser is added, flow velocity is increased due to the cooled wall temperature.
Keywords
High-altitude Simulation; STED(Second Throat Exhaust Diffuser); Plume; Normal Shock; Burnt Gas;
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Times Cited By KSCI : 2  (Citation Analysis)
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