numerical diffusion

基本解释

Embedded grids are adopted to weaken the numerical diffusion of the wake and to apply the above boundary conditions.
爲減少尾跡數值耗散和便於添加上述邊界條件，採用了嵌套網格方法。
To reduce the influence of the numerical diffusion on the computational results, such as decreasing the grid size has been used.
給出了分離器內速度矢量圖，爲減小數值偽擴散對強鏇流動的影響，採用了減少網絡尺寸等措施。
Standard numerical methods solving these equations often produce nonphysical oscillations, and upwind methods usually cause excessive numerical diffusion which smear the sharp fronts.
求解一般拋物方程所採用的標準有限元或有限差分法會産生難以接受的數值震蕩和數值彌散；