The Numerical Computation of Grit Chamber with Rotational Flow

The lack of knowledge about water flow and particle behavior of the grit chamber with rotational flow remains a significant difficulty for the design of these work in sandstone wastewater of hydropower station. In the paper, Eulerian-Lagrangian multi-phase model is set up. The grit chamber with rotational flow in the powerhouse, which is located in southwest of China, is as a case. Velocity field of water and the behavior of particle trajectory of different particles size can be obtained, the distribution of the particle and the removal efficiency of different particle size are numerically computed.