On the acoustic boundary condition in the presence of flow |
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Authors: | M.K. Myers |
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Affiliation: | Joint Institute for Advancement of Flight Sciences, The George Washington University, Hampton, Virginia 23665, U.S.A. |
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Abstract: | The boundary condition on the acoustic perturbation velocity at an impermeable surface in a flow is considered for the cases in which the surface generates a sound field by vibration or is acoustically deformed by an incident sound field. It is shown that in general the condition is not equivalent to the requirement of continuity of acoustic particle displacement in the direction normal to the unperturbed surface. |
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