한국전산유체공학회:학술대회논문집
- 한국전산유체공학회 2005년도 춘계 학술대회논문집
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- Pages.191-196
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- 2005
수치해석을 이용한 충동형 터빈의 공력형상 최적화
Aerodynamic Shape Optimization of the Impulse Turbine using Numerical Analysis
초록
For the improvement of aerodynamic performance of the turbine blade in a turbopump for the liquid rocket engine, the optimization of turbine profile shape has been studied. The turbine in a turbopump in this study is a partial admission of impulse type, which has twelve nozzles and supersonic inflow. Due to the separated nozzles and supersonic expansion, the flow field becomes complicates and shows oblique shocks and flow separation. To increase the blade power, redesign of the blade shape using CFD and optimization method was attempted. The turbine cascade shape was represented by four design parameters. For optimization, genetic algorithm based upon non-gradient search has been selected as a optimizer. As a result, the final blade has about 4 percent more blade power than the initial shape.
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