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A CONSERVATIVE UNSTRUCTURED STAGGERED GRID SCHEME FOR INCOMPRESSIBLE NAVIER-STOKES EQUATIONS 被引量:9

A CONSERVATIVE UNSTRUCTURED STAGGERED GRID SCHEME FOR INCOMPRESSIBLE NAVIER-STOKES EQUATIONS
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摘要 A finite-volume formulation is proposed to solve the three-dimensional,non-hydrostatic Navier-Stokes equations on an unstructured,staggered,z-lever grid,with the goal of simulating non-hydrostatic processes in the free-surface flows.The advection and diffusion terms in the momentum equation are discretized explicitly with the Eulerian scheme,which has the attractive property of being conservative.An integral method of the top-layer pressure is applied to account for the full effects of non-hydrostatic pressure at the free-surface layer.It is shown that the results obtained with a small number of vertical layers(e.g.,2-3 layers) are in good agreements with experimental data or analytical solutions,demonstrating the efficiency and accuracy of the model in simulating a range of free-surface flow problems including wave motion and tide-induced motion. A finite-volume formulation is proposed to solve the three-dimensional,non-hydrostatic Navier-Stokes equations on an unstructured,staggered,z-lever grid,with the goal of simulating non-hydrostatic processes in the free-surface flows.The advection and diffusion terms in the momentum equation are discretized explicitly with the Eulerian scheme,which has the attractive property of being conservative.An integral method of the top-layer pressure is applied to account for the full effects of non-hydrostatic pressure at the free-surface layer.It is shown that the results obtained with a small number of vertical layers(e.g.,2-3 layers) are in good agreements with experimental data or analytical solutions,demonstrating the efficiency and accuracy of the model in simulating a range of free-surface flow problems including wave motion and tide-induced motion.
出处 《Journal of Hydrodynamics》 SCIE EI CSCD 2010年第2期173-184,共12页 水动力学研究与进展B辑(英文版)
关键词 unstructured staggered grid finite-volume formulation NON-HYDROSTATIC free surface flows unstructured staggered grid finite-volume formulation non-hydrostatic free surface flows
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