Numerical Study of Mode Behavior of Three-Dimensional Cavity with Doors
- Resource Type
- Conference
- Authors
- Luo, Yong; Tian, Hao; Wu, Conghai; Li, Hu; Zhang, Shuhai
- Source
- 2021 4th International Conference on Information Communication and Signal Processing (ICICSP) Information Communication and Signal Processing (ICICSP), 2021 4th International Conference on. :239-243 Sep, 2021
- Subject
- Communication, Networking and Broadcast Technologies
Solid modeling
Continuous wavelet transforms
Fluids
Noise reduction
Signal processing
Wavelet analysis
Oscillators
cavity
aeroacoustics
mode-behavior
- Language
The DDES (Delayed Detached Eddy Simulation) method combined with SA (Spalart-Allmaras) turbulence model was used to simulate the three-dimensional cavity flow with doors at Mach number 0.9. The dimension of the cavity is 6:2:1 in length, width and depth. The self-adaptive hybrid scheme based on the Roe scheme was used for the spatial convective terms. The implicit LU-SGS was used for time advancing. The results show that there is an obvious three-dimensional effect downstream of the cavity. The pressure signals on cavity wall were analyzed by continuous wavelet transform (CWT) method. The influences of doors on the flow field and the oscillation mode were analyzed.