CFD를 이용한 헬리콥터의 배기재순환 예측

Prediction of Hot Gas Re-Ingestion of Helicopter by Numerical Method

The hot gas reingestion phenomenon of helicopter brings about the reduction of engine power available around in-ground. The phenomenon will vary for the conditions of ambient conditions and engine exhaust gas, the flow field associated with the downwash effect of main rotor. To verify the amount of hot gas reingestion to intake, Tests(Wind tunnel test, Flight test) or CFD could be available. At this study, the reingestion around in-ground would be predicted by numerical analysis(CFD).