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i want to calculate theconcentratedpressure drop in a tube having 90 round bend and other one having 180 round bend.

The equation that i know is:

dP (concentrated) = 1/2 * b*r*v^2

where:

b=specific coefficient for concentrated pressure drop

r = liquid density (kg/m³)

v = average speed of the fluid inside the tube (m/s)

My problem is how to determine b?

thanks

Moh

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# Concentrated pressure drop in tube having 90 round bend

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