Computational Dispersion Properties of Some Vertically Staggered Grids
几种垂直跳点网格计算频散性的比较研究

Two new vertically staggered grids, LZ grid and LY grid, are introduced. To account for their validities, the computational dispersion properties of LZ grid and LY grid are compared with all the other vertically staggered grids in terms of frequency and group velocity characteristics and the vertical scale ranges with group velocities of the wrong sign. Its result shows that the dispersion properties of the LZ grid are the same as those of the CP grid which is widely used and is the most optimal vertically staggered grid, and LY grid is the second one. Thus, it may provide additional choice of the appropriately vertical grid for modelers.