Computational fluid dynamics simulation of sound propagation through a blade row
Configuration of blade row in a flowing sound field.
(Color online) Sketch of computational grid: Downstream incident wave with flat blades.
Convergent history of pressure at monitor points.
Numerical simulation result without a blade in axial mean flow field.(a) Instantaneous pressure contour. (b) Sound pressure level (p ref =2.0 × 10−5 Pa) along the axis.
Transmission coefficient error of CFD to Kaji and Okazaki’s results for a different grid size.
Transmission coefficient error of CFD to Kaji and Okazaki’s results for different input wave SPL (p ref = ρUc).
(Color online) Comparison of transmission coefficient: M = 0.5, kCb = π/2.
(Color online) Comparison of transmission/reflection coefficient: M = 0.5, θ = 60°, kCb = π.
(Color online) Effect of flow Mach number. Upper curve: Transmission coefficients versus Mach number. Lower curve: Reflection coefficient. (a) Constant incident wave angle for each case; (b) constant cut-off ratio for each case.
(Color online) Effect of blade thickness.
(Color online) Effect of turning angle.
Parameters of two computational cases.
Article metrics loading...
Full text loading...