fractional steps method

英 [ˈfrækʃənl steps ˈmeθəd]

美 [ˈfrækʃənl steps ˈmeθəd]

【计】分步法，分数步长法

The Modified Characteristic Finite Difference Fractional Steps Method for Nonlinear Coupled System of Multilayer Fluid Dynamics in Porous Media
多层非线性渗流耦合系统的特征分数步差分方法
A fractional step finite element method based on Taylor expansion theory is proposed for unsteady flows, by which time discretization is carried out in 3 steps and spatial discretization is done by the conventional Galerkin method.
描述了一种基于Taylor展开的分步有限元数值格式，该法在时间上进行分步计算，在空间上采用标准的Galerkin有限元格式。
In this paper, a method of fractional steps of time is presented in the governing equations of fluid dynamics, the σ coordinate and implicit difference in vertical direction as well as the horizontal upwind finite element method are taken as our numerical calculation procedure.
在建立模型时，对三维浅海流体动力学方程进行时间分步计算.在垂直方向上引用σ坐标变换，并采用隐式有限差分格式；
The fractional steps experiment design method was proposed. With decreasing the search space by the "break up the whole into parts" method, the calculation time of this method can be saved about 40~ 60% compared with the conventional one step experiment design method.
提出了分步试验设计方法，通过化整为零地减小搜索空间，可比常规的一步试验设计方法节省40～60%左右的计算时间。