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Pressure Drop Pipe Measurement Location

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Old   June 12, 2017, 11:44
Default Pressure Drop Pipe Measurement Location
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James
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Hello,

I am doing a project where I am modelling fluid flow in pipes and using cfd to calculate the pressure drop around different pipe bends.

I am confused as to which point in the pipe cross section to measure the pressure drop. The software I am using allows me to measure the pressure at a specific point or as an averaged value on the pipe cross section.

My question is, is the pressure in a pipe usually measured at a point along the pipe centreline, or as an average across the pipe cross section?

Thanks.
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Old   June 12, 2017, 17:12
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Jim Breunig
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I'd have to say that it depends on what you're doing, but it sounds like you want the drop in static pressure. For that, we measure at a tap along the wall of the pipe.

You can use this in conjunction with a pitot tube to get total pressure. The pitot tube tap would be at pipe centerline, but it sounds like you care about static pressure.

Again, it all depends on what you want to see/measure/understand.
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