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Different operating density cause different result

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Old   March 17, 2008, 07:58
Default Different operating density cause different result
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Chen Zhi?
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I am simulating a very simple case: for water in a 2d rectangle box, gravity is in the negtive y position, the upside is the pressureinlet, while the bottom and side are walls. I thought the pressure at the bottom should be roe*g*h(h is the hight of the box). But when I set the operating density to different value, I got different pressue. Only when set to 0, I got the right answer. Why? What is the meaning of operating density and how to specify it ? Thank you
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Old   March 17, 2008, 08:36
Default Re: Different operating density cause different re
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Robert
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Static pressure = Absolute pressure-Operating pressure.

Try to see the absolute pressure, or If you see the static pressure, you have to know that the static pressure = gouge pressure.

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Old   March 17, 2008, 08:56
Default Re: Different operating density cause different re
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Chen Zhi?
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I mean operating density. This option is activated when acceleration is specified in operating condition panel.
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Old   March 17, 2008, 09:05
Default Re: Different operating density cause different re
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Robert
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Sorry! My mistake.

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