The characteristic time obtained from dimensional analysis offers a reference value for computational time step.
量纲分析得到的特征时间为计算时间步长提供了参考值。
The time step is very small for the transient analysis of nozzle jet flow, which occupied numerous computational resources.
由于冲击式水轮机三维自由射流是两相流，进行瞬态计算的时间步长必须非常小，这就需要大量的计算资源。
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