Two-dimensional finite-difference model for moving boundary hydrodynamic problems
To predict the hydrodynamics of lakes, estuaries and shallow seas, a two 'dimensionalnumerical model is developed using the method of fractional steps. Thegoverning equations, i.e., the vertically integrated Navier-Stokes equations of fluidmotion, are solved through three steps: advection, diffusion and propagation. Thecharacteristics method is used to solve the advection, the alternating direction implicitmethod is applied to compute the diffusion, and the conjugate gradient iterativemethod is employed to calculate the propagation. Two ways to simulatethe moving boundary problem are studied. The first method is based on the weirformulation. The second method is based on the assumption that a thin water layerexists over the entire dry region at all times. A number of analytical solutions areused to validate the model. The model is also applied to simulate the wind drivencirculation in Lake Okeechobee, Florida.(135 page document)
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| Format: | monograph biblioteca |
| Language: | English |
| Published: |
University of Florida, Department of Coastal and Oceanographic Engineering
1988
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| Subjects: | Oceanography, Limnology, Engineering, hydrodynamics, simulations, lakes, estuaries, Lake Okeechobee, Florida, thesis, |
| Online Access: | http://hdl.handle.net/1834/18950 |
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