Axisymmetric Tornado Simulations with a Semi-Slip Boundary
AbstractThe structure of natural tornadoes and simulated analogs are sensitive to the lower boundary condition for friction. Three-dimensional numerical simulations of storms require a choice for turbulence parameterizations and resolution of wind near the lower boundary. This article explores some of the consequences of choices of a surface drag coefficient on the structure of a mature simulated tornado, using a conventional axisymmetric model. The surface drag parameterization is explored over the range of the semi-slip condition, including the extremes of no-slip and free-slip. A moderate semi-slip condition allows for an extreme pressure deficit, but without the unrealistic vortex breakdown of the no-slip condition. View Full-Text
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Fiedler, B.H. Axisymmetric Tornado Simulations with a Semi-Slip Boundary. Fluids 2017, 2, 68.
Fiedler BH. Axisymmetric Tornado Simulations with a Semi-Slip Boundary. Fluids. 2017; 2(4):68.Chicago/Turabian Style
Fiedler, Brian H. 2017. "Axisymmetric Tornado Simulations with a Semi-Slip Boundary." Fluids 2, no. 4: 68.
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