Boundary-Layer Similarity Under an Axisymmetric,Gradient Wind Vortex |
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| Authors: | Ralph C Foster |
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| Institution: | (1) Applied Physics Laboratory, University of Washington, 1013 NE 40th St, Seattle, WA 98105-6698, USA |
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| Abstract: | We present similarity solutions for the mean boundary-layer profiles under an axisymmetric vortex that is in gradient wind
balance; the similarity model includes the nonlinear momentum advection and curvature terms. These solutions are a generalization
of the Ekman layer mean flow, which is the canonical boundary-layer basic state under a uniform, geostrophically-balanced
flow. Near-surface properties such as inflow angle, surface wind factor, diffusive transport of kinetic energy into the surface
layer and dissipational heating are calculated and shown to be sensitive to the choice of turbulence parameterization. |
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| Keywords: | Similarity boundary-layer modelling Tropical cyclone boundary layer Vortex boundary layer |
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