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2012•The Proceedings of Mechanical Engineering Congress JapanOpen access

S052011 Numerical Study of Receptivity to Freestream Disturbances for Case of an Elliptic Leading Edge

Yu NISHIO, Masaya SHIGETA, Seiichiro Izawa, Yu FUKUNISHI

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Abstract

A relation between the vorticity disturbances and the leading edge receptivity is investigated numerically. Freestream disturbances are given as a two-dimensional periodic vorticity fluctuation at the upstream boundary. Three cases changing the height of the impinging vortices are tested. The result shows that location of the impinging vorticity pattern influence the vorticity pattern near the wall of the boundary layer, changing the receptivity.

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A relation between the vorticity disturbances and the leading edge receptivity is investigated numerically. Freestream disturbances are given as a two-dimensional periodic vorticity fluctuation at the upstream boundary. Three cases changing the height of the impinging vortices are tested. The result shows that location of the impinging vorticity pattern influence the vorticity pattern near the wall of the boundary layer, changing the receptivity.

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Available abstract

A relation between the vorticity disturbances and the leading edge receptivity is investigated numerically. Freestream disturbances are given as a two-dimensional periodic vorticity fluctuation at the upstream boundary. Three cases changing the height of the impinging vortices are tested. The result shows that location of the impinging vorticity pattern influence the vorticity pattern near the wall of the boundary layer, changing the receptivity.

Key concepts: Freestream, Vorticity, Receptivity, Boundary layer, Vortex, Vorticity equation, Physics, Leading edge

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