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K-epislon模型被称为one-point closure方法下导出的一种雷诺平均N-S方程(RANS), 相对于(two-point closure)而言。
请教:什么是one-point closure?
什么是two-point closure?
能不能解释:
one-point closure:
If the flow is statistically steady, over a coordinate in which the mean flow does not vary, or over an ensemble of realizations(an imagined set of flows in which all controllable factors are kept fixed).
two-point closure:
use equations for the correlation of the velocity components at two distinct points or more oftern, the Fourier transform of these equations. |
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