한국전산유체공학회:학술대회논문집
- 한국전산유체공학회 2011년 춘계학술대회논문집
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- Pages.327-330
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- 2011
오픈 소스 CFD 코드를 이용한 차세대 고속열차 공력 해석
Aerodynamic Simulation of Korea next generation high speed train using open source CFD code
- 발행 : 2011.05.26
초록
CFD simulation is widely used in various industries, universities and research centers. In Korea most of the researchers use foreign commercial S/W packages especially in industries. But commercial CFD packages have some problems as limit to source code and very high license foe. So from several years ago open source CFD code has been widely spread as an alternative. But in Korea there are a few users of open source code. Insufficiency of performance validation as for accuracy, robustness, convenience and parallel speed-up is important obstacles of open source code. So we tested some validation cases as to incompressible external aerodynamics and internal flaws and now are doing compressible flaws. As the first stage of compressible flow validation, we simulated Korea next generation high speed train(HEMU). It's running condition is 400km/hr and maximum Mach number reaches up to 0.4. With the high speed train we tested accuracy, robustness and parallel performance of open source CFD code OpenFOAM Because there isn't experimental data we compared results with widely used commercial code. When use