fractional step method meaning in Chinese

步进计算法
分步法
分裂法

Characteristics of the fractional step method for two dimensions melt flow simulation in the casting process
二维铸造充型过程数值模拟的特征分数步长法
A vertical two dimensional model for thermo stratified flows is proposed , which solves the velocity and pressure by a fractional step method , and large eddy simulation model is used to calculate the reynolds stress and turbulent diffusion effect
摘要建立立面二维水动力学与水温耦合模型，用分步法求解流速和压力，采用大涡模型计算紊动应力和紊动扩散。