| HYDRODYNAMIC MODELLING OF ESTUARINE CIRCULATION USING A SPLINE METHOD OF FRACTIONAL STEPS |
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| 作者姓名： | Pu Wang and R. Kahawita Professor of Mechanics Lenzhou University Lanzhou China. Professor of Civil Ensineering Ecole Polytechnique de Montreal Canada. |
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| 作者单位： | Pu Wang and R. Kahawita Professor of Mechanics，Lenzhou University，Lanzhou，China. Professor of Civil Ensineering，Ecole Polytechnique de Montreal Canada. |
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| 摘 要： | I. INTRODUCTIONNumerical models of estuaries incorporating simulation of the density induced circulation are consideredimPOrtant tools in the assessment of their dispersive characteristics. Most models to date have used finite difference approximations to the governing equations (see for example thericke and Hogan, 1977, Blumberg,1 977, Perrels and Karelse, 1978). A numeriCal model of estuarine circulation using a SADI (Spline Alternating Direction implicit) procedure together with a…
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HYDRODYNAMIC MODELLING OF ESTUARINE CIRCULATION USING A SPLINE METHOD OF FRACTIONAL STEPS |
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| Pu Wang and R. Kahawita Professor of Mechanics,Lenzhou University,Lanzhou,China. Professor of Civil Ensineering,Ecole Polytechnique de Montreal Canada..HYDRODYNAMIC MODELLING OF ESTUARINE CIRCULATION USING A SPLINE METHOD OF FRACTIONAL STEPS[J].International Journal of Sediment Research,1990(1). |
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| Authors: | Pu Wang and R Kahawita Professor of Mechanics Lenzhou University Lanzhou China Professor of Civil Ensineering Ecole Polytechnique de Montreal Canada |
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| Abstract: | A two-dimensional laterally integrated numerical model has been developed to represent the velocity and salinity distribution in a stratified estuary. The soverning equations expressing the conservation of mass, momentum, and ablt or heat content are solved by a spline method of frachonal steps in combination with the usual finite-difference method. Details of the computational scheme have been included in the present report. The model has been applied to the estuary of ha Riviere Petite beleine (Little Whale River) in the James Bay region of northern canada. Results from the simulation have been compared with salinity and velocity data taken in the field, as well as with the SADI (Spline Alternating Direction Implicit) Procedure. The results indicate that the spline method combined with a fractional step technique for each coordinate direction can be a powerful tool for the numerical solution of estuarine circulation. |
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| Keywords: | Estuary Spline Fractional-step method Salinity Vertical two-dimensional model Numerical simulation Circulation |
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