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Simple incompressible nozzle jet simulation with wrong total pressure

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Old   September 5, 2024, 12:30
Default Simple incompressible nozzle jet simulation with wrong total pressure
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Lu Zhao
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Hi,

I am using Ansys Fluent to run a very simple subsonic nozzle jet flow (Ma=0.2).

Attached picture represents geometry and BCs.


But after running 15000 steps, the total pressure of the nozzle inlet is showing 1613 Pa rather than 10419Pa as set on BC. So I wondering is there anything wrong with the BCs?
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Old   September 7, 2024, 23:43
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Lucky
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The total pressure plot is a gauge pressure plot
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Old   September 11, 2024, 11:57
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Quote:
Originally Posted by LuckyTran View Post
The total pressure plot is a gauge pressure plot
Thank you so much! That makes a lot sense! I will change the operating pressure to 0 and try again.
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