Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4993325 | International Journal of Heat and Fluid Flow | 2016 | 10 Pages |
Abstract
We investigate the noise generated by an airfoil section. Three cases are considered, one with a clean airfoil and two cases with airfoils with ice accretion. The amount of ice is the same in the two cases with ice accretion, but the surface of the accreted ice layer is smoother in one of them. The noise is computed using a hybrid approach. First the flow and the acoustic sources are computed. Second, the noise propagation is predicted by solving an inhomogeneous wave equation. The results indicate that in this case the accreted ice layer leads to a decrease of the radiated noise levels, especially in the lower frequency range.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Fluid Flow and Transfer Processes
Authors
Robert-Zoltan Szasz, Matilda Ronnfors, Johan Revstedt,