ISSN:
0271-2091
Schlagwort(e):
finite volume method
;
fractional step algorithm
;
three-dimensional flow
;
free surface
;
curvilinear co-ordinates
;
collocated grid
;
Engineering
;
Numerical Methods and Modeling
Quelle:
Wiley InterScience Backfile Collection 1832-2000
Thema:
Maschinenbau
Notizen:
A three-dimensional hydrodynamic model has been developed for turbulent flows with free surface. In the horizontal x-y-plane, a boundary-fitted curvilinear co-ordinate system is adopted, while in the vertical direction, a σ-co-ordinate transformation is used to represent the free surface and bed topography or lower boundary. Using the finite volume method, the convection terms are discretized using Roe's second-order-accurate scheme. The governing equations are solved in a collocated grid system by a fractional three-step implicit algorithm that has been developed to handle the velocity-pressure-depth coupling problem of free surface incompressible fluid flows. The present study is the extension of previous work to three-dimensional turbulent flows. The model has been applied to three test cases. Comparison with available data shows that the model developed is successful, and is valuable to engineering application. © 1998 John Wiley & Sons, Ltd.
Zusätzliches Material:
17 Ill.
Materialart:
Digitale Medien
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