NUMERICAL MODELING OF THE FLOW IN THE CANAL WITH THE CAVERNY METHOD OF ADAPTIVE NETS
In this paper, a two-dimensional laminar flow in a channel with rounded edges of a cavity located in the lower wall of the channel is considered. It is shown that due to the adaptive method of computational grid thickening, the pressure drop quickly reaches its final value. The pressure loss coefficient does not change during the last four thickening cycles, which suggests that the remaining edges with an assumed error higher than the required one do not affect the global accuracy of the pressure field. The pressure drop across the final adapted mesh is in good agreement (0.2% error) with the original pressure drop. This suggests that adaptive refining is able to provide accurate solutions with savings on the number of cells in the computational grid, since the final adapted grid contains 0.65% of the number of cells in the case of refining the computational grid with a constant step.