An improved mean surtace method (IMSM) for propeller noise predictionis presented, based on solving the Ffowes Williams & Hawking (FW & H) equation intime domain. Numerical calculation results show that the IM...An improved mean surtace method (IMSM) for propeller noise predictionis presented, based on solving the Ffowes Williams & Hawking (FW & H) equation intime domain. Numerical calculation results show that the IMSM needs only 50% ofCPU time and memory of subsonic full surface method (SFSM), 50%～ 60% of CPUtime and meinory of old nican surfacc method (OMSM) and 10%～ 13% of CPU timeof transonic collapse spliere method (TCSM) while the calculation accuracy can be as-sured. Thus, the IMSM given in this paper could be a good alternative method forsubsonic propeller noise prediction. especially in preliminary aeroacoustics design of anew propeller.展开更多
文摘An improved mean surtace method (IMSM) for propeller noise predictionis presented, based on solving the Ffowes Williams & Hawking (FW & H) equation intime domain. Numerical calculation results show that the IMSM needs only 50% ofCPU time and memory of subsonic full surface method (SFSM), 50%～ 60% of CPUtime and meinory of old nican surfacc method (OMSM) and 10%～ 13% of CPU timeof transonic collapse spliere method (TCSM) while the calculation accuracy can be as-sured. Thus, the IMSM given in this paper could be a good alternative method forsubsonic propeller noise prediction. especially in preliminary aeroacoustics design of anew propeller.
