the Improved Euler method 改进的欧拉方法
The particles were traced in the Lagrangian frame, and the Euler method was used to calculate the particle mean velocity.
跟踪颗粒轨迹时，在拉格朗日框架进行，统计颗粒的平均速度时采用欧拉方法。
Generally, there are two methods in water current analysis and calculation, one is the Euler method, and the other is the Lagrange method.
在水流分析计算中，通常采用二种方法：一种是欧拉法；一种是拉格朗日法。
It is only needed to calculate the right function once for each integration step. But the stability domain is different from the Euler method.
它是一个显式方法，同欧拉法一样，每积分一步，只需计算一次右函数，但它的稳定区域与欧拉法不同。
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