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H20 flow operating pressure

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Old   December 15, 2005, 22:58
Default H20 flow operating pressure
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Hi, I've been modeling 2D incompressible air flow past bluff bodies in a shaft using a velocity inlet and an outflow bc's. I would like to do the same with water but I'm not sure how to set the operating pressure for this case. It can't be 101325 anymore. Thanks.
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Old   December 16, 2005, 05:07
Default Re: H20 flow operating pressure
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For incompressible fluid simulations, the operating pressure doesn't matter
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Old   December 22, 2005, 19:48
Default Re: H20 flow operating pressure
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Why then does my reference pressure location seem to matter? When I was running my cases in air, I initially left the ref. press. location at the default (0,0), which is inside of my plate, and got Cp values that were around 20 which is way too high. I then moved the ref. press. location to the velocity inlet, changing nothing else, and got a Cp of 1, the correct value for this stagnation region. I'm a little confused. Thanks for your reply.
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