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A question about modeling unsteady turbine cascade |
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August 6, 2015, 10:10 |
A question about modeling unsteady turbine cascade
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New Member
Cheung
Join Date: Dec 2014
Posts: 2
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Dear everybody,
I'm trying to simulating a one-stage turbine cascade by using Transient Blade Row Model, and I've chosen the Time transformation model. But when I go to every timesteps of this simulation , I've obtain Notice as follows: +--------------------------------------------------------------------+ | ****** Notice ****** | | The non-dimensional near wall temperature (T+) has been clipped | | for calculation of Wall Heat Transfer Coefficient. | | | | Boundary Condition : S_R Side 2 | | T+ clip value = 1.0000E-10 | | | | If this situation persists and you are using the High Speed Model, | | consider enabling Mach number based blending between low speed and | | high speed wall functions. You can do so by specifying a Mach | | number threshold as follows: | | | | EXPERT PARAMETERS: | | highspeed wf mach threshold = 0.1 # default=0.0 (off) | | END | +--------------------------------------------------------------------+ So I want to ask you about this notice: What does this notice means? And I have found the expert parameter "highspeed wf mach threshold" in the settings but I cannot found it.where can I find this expert parameter? Thank you for your any reply. Neuerzh, |
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Tags |
near wall temperature, notice, transient blade row, unsteady |
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