| Summary: | Numerical experiments were carried out on the high speed driven cavity flows in 2D curved channels
to investigate mainly the pressure field. A density-based algorithm in ANSYS Fluent 13.0 was used
in the present URANS simulations. The SST k- ω model was used for modeling the turbulence within
an unstructured mesh solver. Validation of the numerical code was accomplished, and the results
showed a good agreement between the numerical simulation and experimental data. Three channels
(straight, concave and convex) with a nominal height of H = 4 × 10 −3 m under the transonic flow
conditions were considered in the study. The cavity studied is L = 12 × 10 −3 m long with the depth
ranging from D = 12 × 10 −3 m to 48 × 10 −3 m to obtain the length-to-depth ratios of L /D=1 to 1 /4.
The study comprised the analysis of the cavity surface pressures and the associated flow structures.
The channel configuration influenced the cavity flowfield, and that influence finally resulted in a
change in the surface pressure fluctuations in the cavity. The deep cavity attenuated the flowfield
oscillation inside the cavity.
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