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Pressure tap location to measure pressure drop?

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Sycorax

Mechanical
Joined
Oct 15, 2012
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17
Location
US
I need to measure the pressure drop across a core( lets say a restriction). Air is flowing ( around 15 g/sec) in a 4"ID tube which is very long( irrelevant). Now there is a core ( or lets call it some restriction) in the pipe which is 10" long and around 3.92" wide which fills in the 4" tube. Now where do I place the pressure taps? Do i place right near the core/restriction around 1" in front of it and 1" behind it or do i place quite some distance from it , like 6" in front of it and 6" behind it.

Any logical reason behind choosing a particular location? appreciate your reply. thanks.
 
The tap opening should avoid being placed where it is exposed to varying pressures accompanying eddy swirls. The tap should be placed a certain number of diameters away from the orifice. I don't remember how many, but that should be easy for you to research that yourself.

"People will work for you with blood and sweat and tears if they work for what they believe in......" - Simon Sinek
 
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