noun
numerical diffusion; false diffusion
Technical term in computational fluid dynamics and numerical analysis; refers to artificial diffusion introduced by discretization errors.
このスキームでは数値拡散が大きいため、解の精度が低下する。
In this scheme, numerical diffusion is large, so the accuracy of the solution decreases.
数値拡散を抑えるために高次精度の手法が用いられる。
High-order methods are used to suppress numerical diffusion.
Compound of 数値 (numerical value) and 拡散 (diffusion), likely a calque from English 'numerical diffusion'.