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Old   May 25, 2015, 11:52
Default Net Static Pressure
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yusufcan
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Hello everyone,

I am working on investigating 2-D Radial Blower analysis.
I am confused about reports to compute inlet-outlet pressure difference.

Area-Weighted Average
Static Pressure (pascal)
-------------------------------- --------------------
pressure_outlet 433.29645
velocity_inlet 350.10898
---------------- --------------------
Net 384.83994


What is the meaning of Net ?

In my opinion, it should be 433-350=83 Pa.

What am I missing ?

Thank you.
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Old   May 26, 2015, 06:07
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Troy Snyder
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Quote:
Originally Posted by kaplan View Post
Hello everyone,

I am working on investigating 2-D Radial Blower analysis.
I am confused about reports to compute inlet-outlet pressure difference.

Area-Weighted Average
Static Pressure (pascal)
-------------------------------- --------------------
pressure_outlet 433.29645
velocity_inlet 350.10898
---------------- --------------------
Net 384.83994


What is the meaning of Net ?

In my opinion, it should be 433-350=83 Pa.

What am I missing ?

Thank you.
Net is simply the area-weighted average pressure of both the pressure_outlet
and velocity_inlet.
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Old   May 26, 2015, 08:27
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Quote:
Originally Posted by kaplan View Post
Hello everyone,

I am working on investigating 2-D Radial Blower analysis.
I am confused about reports to compute inlet-outlet pressure difference.

Area-Weighted Average
Static Pressure (pascal)
-------------------------------- --------------------
pressure_outlet 433.29645
velocity_inlet 350.10898
---------------- --------------------
Net 384.83994


What is the meaning of Net ?

In my opinion, it should be 433-350=83 Pa.

What am I missing ?

Thank you.
You may want to use an area averaged expression @ location (Inlet/ Outlet) to get the pressure difference, if that's what you are looking for.

Example: areaAve(Pressure)@inlet-areaAve(Pressure)@outlet
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Old   May 26, 2015, 15:25
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Ethan Doan
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you are right 83 is the pressure drop you are looking for.
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Old   May 27, 2015, 03:45
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yusufcan
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Thank you everyone
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