抄録
The numerical model for 3 dimensional atmospheric boundary layer was developed using hydrostatic, momentum and heat transport equations with boundary-fitted curvilinear coordinate along the shore line.The model was applied to Osaka Bay area for prediction of the sea and land breezes.The horizontal domain covers 100km×100km, and vertical height is 2600m. The simulations were carried out using the three different mesh grids. One was the mesh grid fitted to shore line (BFC) and others were the coarse (same mesh as BFC) and the fine mesh grid with the Cartesian coordinate (CMG; FMG). Both BFC and FMG results agreed reasonably but CMG results were some different. The results showed that boundary-fitted method could correctly predict in spite of the relatively coarse mesh grid and consume only one-forth the computer time needed for FMG
