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下边是流体软件的帮助:
In this problem, the Reynolds number is 24,500, so viscous effects should probably be considered. Click on the Viscosity button and select Viscous Flow. However, the current meshing is so coarse, the viscous boundary layers will not be captured well. The flow will probably exhibit some turbulence but its effect is likely minimal, so select the Laminar radio button. The following selections will be displayed in the dialog box.
这是一个水流进入一个空腔的计算模型的帮助,我奇怪的是,这里说雷诺数是24500,这么大的雷诺数怎么用层流模式计算呢?临界雷诺数明渠是500多,管道是1000多,早应该是紊流了呀!疑惑呀! |