eddy diffusion term 涡流扩散项
molecular diffusion term 分子扩散项
chromato-diffusion term 色谱扩散项
degenerate diffusion term 退化扩散项
fluctuating pressure diffusion term 脉动压力扩散项
short-term diffusion factor 短期扩散因子
An implicit method is employed in solving diffusion term and projection term, such as Gauss-Seidel iteration method, Fast Fourier Transform.
在求解扩散项和投影项时，采用隐式的求解方法，例如高斯—塞德尔迭代法、快速傅里叶变换。
In addition, unlike that in the forward calculation, the diffusion term in the backward calculation is prone to accumulate errors, thus renders the whole scheme unstable.
此外与顺时计算不同，扩散项在反向计算时更容易积累误差，从而使计算格式趋于不稳。
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