engleski

Temperature at open boundary in hydrodynamics sea models

In the numerical simulations of semi-closed basin hydrodynamics, generally, only the initial temperature field at the open boundary cross section is known. Taking these values constant for one month or longer, the unrealistic gradients at the open boundary may be generated. The sea surface hydrodynamics strongly depends on the forcing from atmosphere and the temperature at open boundary cannot be too much different from the temperature in the integration area near the boundary. It is reasonable to connect the temperature changes in the integration area with the values at open boundary, in some way. Here the weighted average between the value at the open boundary and the value at the first interior grid point along the normal is discussed and it is illustrated with the results of the numerical experiments.

computational methods ; oceanography ; hydrodynamical sea modeling ; boundary conditions

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