式中左边第 2、 3 项为水流物质传输之对流项（Advection Term）； 左边第 4、 5 项为物质于水中受乱流、 分子扩散之延散项（Dispersion Term）； 右边第 1 项为 污染物之负 荷量； 右边第 2 项...
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vorticity advection term 涡度平流项
To make sure stability with large time-step, the semi-Lagrangian method is used to compute the advection term and the Jacobi iteration method is used to compute the pressure-Poisson equation and the diffusion term.
求解过程中采用半拉格朗日方法求解对流项,结合雅可比迭代求解压力泊松方程和扩散项以获得相对稳定的格式,从而满足比较大的时间步长。
参考来源 - 不规则物体模拟Then, the Particle-tracing Method is designed, which calculates the advection term by setting some particles in the grid cells and tracing them.
然后,本文又设计了质点跟踪法,该方法通过在网格内设置一些质点并对质点进行跟踪来计算平流项。
参考来源 - 质点跟踪法及其应用·2,447,543篇论文数据，部分数据来源于NoteExpress
The horizontal advection term contribute little to the frontogenesis and frontolysis.
水平温度梯度的平流对锋生（消）的影响都很小。
Then, the Particle-tracing Method is designed, which calculates the advection term by setting some particles in the grid cells and tracing them.
然后，本文又设计了质点跟踪法，该方法通过在网格内设置一些质点并对质点进行跟踪来计算平流项。
Positive vorticity accumulated by horizontal advection was balanced with negative vorticity made by divergence term in vorticity balance.
涡度平衡中主要是水平平流累积的正涡度与散度项制造的负涡度相平衡。
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