Decay of spanwise wavy inhomogeneities in a three-dimensional turbulent boundary layer over an “infinite” swept concave wing
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Abstract
Measurements have been made in a three-dimensional turbulent boundary layer over a concave surface, whose generators were swept at 35 ° (simulating an “infinite” swept wing). The results show that the quasi-periodic spanwise variations of skin friction, reported in two-dimensional concave wall turbulent boundary layers, decay in the presence of a cross flow. Skin friction surveys in a companion experiment with an “infinite” swept concave surface of variable sweep show that there exists a critical sweep angle below which the disturbances grow, and above which they decay.
Keywords
Boundary Layer Skin Friction Turbulent Boundary Layer Companion Experiment Cross Flow
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