Comparative application of different numerical models to two familiar fluid dynamics problems
Three 3-D finite difference (FD) shallow water models of different origin are applied for simulating the turbulent COUETTE flow and the EKMAN problem. The first model (M1) is a mainly explicit model with a higher order turbulence closure scheme, the second (M2) has a semi-implicit numerical scheme, and the third (M3) is an explicit model with a FD scheme in the horizontal direction and a decomposition in spectral modes in the vertical direction. M1 and M2 are applied to the turbulent COUETTE flow, comparing the results with a steady analytic solution, based on a family of analytic eddy viscosity profiles. M1, M2 and M3 are applied to the steady and unsteady EKMAN problems, comparing the results with analytic solutions based on the assumption of homogeneous turbulence, i.e. a constant eddy viscosity. The results refer to the influence of space and time discretisation and to numerical stability.
Bibliographic Reference: Paper presented: VIIIth International Conference on Computational Methods in Water Resources, Venice (IT), June 11-15, 1990
Availability: Available from (1) as Paper EN 35284 ORA
Record Number: 199011497 / Last updated on: 1994-12-02
Original language: en
Available languages: en