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LES of turbulent channel flows

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Old   November 18, 2019, 04:19
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Jianrui Zeng
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Quote:
Originally Posted by Eman. View Post
Everything else is the same as the previous case except I don't use fvOptionDict, instead I am using averaging (the setAverage option in the mapped boundary condition) to drive the flow. The flow rate does not drop or anything and the pressure decreases almost linearly but the initial disturbances start to decay and finally there will be no turbulence in the domain
Is it normal that pressure decreased when running channel simulations? If so, the thermal-physical properties are all based on the setting pressure(8MPa), but in fact, the pressure decreased to 1.5Mpa. And it seems everything goes under the conditions of decreasing pressure. My purpose is to run the simulation at the pressure of 8MPa. Any idea is highly appreciated. Thank you.
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