اعمال اثر تر و خشك شدن سواحل در مدلسازي احجام محدود جريانات دوبعدي ناشي از باد در درياچه ها

Considering the effect of wetting and drying in finite-volume modeling of Two-dimensional, wind-induced lake currents

Computer simulation of flow patterns due to wind effect and prediction of the formation of currents and circulations in natural and artificial lakes can be useful in the environmental research studies. In the present study, a two-dimensional flow solver is developed for modeling wind-induced lake flows. In this model, hydraulics parameters such as depth and horizontal velocity components are computed by solving the depth average equations of continuity and motion on three-dimensional bed surfaces. The equations are converted into discrete form using cell vertex finite volume method for triangular unstructured mesh. In order to stabilise the explicit procedure of solution, artificial viscosity terms are used. In this study, a new technique is used for wet and dry modeling in the shores of solving domain. The accuracy of the results is evaluated by comparing the results of the present model with other results available, _ for wind-induced flow in a circular basin. Finally, the flow circulations due to wind stresses on water surface of Chitgar artificial lake, which is being designed in the west of Tehran, are predicted by the application of the developed model.