1. NUMERICAL UNDERSTANDING OF THE SELF-INDUCED OSCILLATION OF FLOW PAST THE OPEN CAVITY WITH A STORE.
- Author
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SI, HAI-QING and WANG, TONG-GUANG
- Subjects
- *
TURBULENCE , *NUMERICAL analysis , *NAVIER-Stokes equations , *COMPUTER simulation , *VISCOSITY , *FOURIER transforms , *SPECTRAL energy distribution , *ALGORITHMS , *REYNOLDS number - Abstract
The flows around a typical open cavity with a store are numerically simulated in this paper. A fully implicit unfactored method is employed in the solver of RANS equations, where the S-A turbulent model is implemented to calculate the turbulent eddy viscosity. The flow-induced oscillation of the free shear layer around the cavity lip is captured and analyzed. Comparisons for the different cases of the cavity flow are made. The calculated results show that the pressure fluctuation is pertinent to the different positions of the store inside the cavity. The power spectral density (PSD) of the pressure by fast Fourier transformations (FFT) is also displayed in the paper. For the Rossiter's oscillatory mode, the numerical results compare well with the experimental data. [ABSTRACT FROM AUTHOR]
- Published
- 2010
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