ABSTRACT
ABSTRACT: The implicit algorithm theory is studied less than the explicit algorithm in FVM with unstructured grids. In this paper, N-S equations are discreted using LU-SGS implicit algorithm during the solving process ultra-relaxation coefficient is introduced. According to numerical flume test, the value of relaxation coefficient can improve the convergence rate of calculations, which ranges from 1.0 to 1.3. Based on LU-SGS implicit algorithm, 2D high resolution mathematical model in DanDong port is established to simulate the tidal current and suspended sediment transportation. The results show that LU-SGS implicit algorithm is of high precision and stable to simulate hydro-dynamic environment in the wide open sea.
