한국추진공학회:학술대회논문집 (Proceedings of the Korean Society of Propulsion Engineers Conference)
- 한국추진공학회 2009년도 춘계학술대회 논문집
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- Pages.315-319
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- 2009
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- 1975-342X(pISSN)
로켓노즐에서 발생하는 횡력변동에 관한 연구
Study on the Lateral Force Fluctuations in a Rocket Nozzle
- 발행 : 2009.05.14
초록
Investigation of the lateral force fluctuations in an axisymmetric overexpanded compressed truncated perfect (CTP) nozzle for the shutdown transient is presented. These nozzles experience side-loads during start-up and shut-down operations, because of the flow separation at nozzle walls. Two types of flow separations such as free shock separation (FSS) and restricted shock separation (RSS) shock structure occur. A two-dimensional unsteady numerical simulation has been carried out over an axisymmetric CTP nozzle to simulate the lateral force fluctuations in nozzle during shutdown process. Reynolds Averaged Navier-Stokes equations are numerically solved using a fully implicit finite volume scheme. Governing equations are solved by coupled implicit scheme. Two equation k-