forces due due to pulsating flow in elbows or valves
forces due due to pulsating flow in elbows or valves
(OP)
Hi
I'm looking for references or formulae to evaluate the forces on elbows, valves, etc, due to pulsating flow (i know the pressure pulsation)
thanks for your help
I'm looking for references or formulae to evaluate the forces on elbows, valves, etc, due to pulsating flow (i know the pressure pulsation)
thanks for your help





RE: forces due due to pulsating flow in elbows or valves
Coriolis meters are mostly of thin wall bent tube construction. Under pressure, the tubes tend to want to straighten out and to stiffen. Pulsating pressure is a well known problem with such meters. I couldn't say if any data that might have would be relevant to what you are looking for though.
Just a suggestion. I am sure you will get better advise from some other members.
JMW
www.viscoanalyser.com
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RE: forces due due to pulsating flow in elbows or valves
In particular, the force is F = m' (V2 - V1) for fluid mass flow m', outlet fluid velocity V2 and inlet fluid velocity V1. Since pressure is proportional to the square of velocity by the Bernoulli Equation, you can rearrange the equation in terms of pressure, the pulsating pressure proportional to P2 - P1, or dP. You will find the solution set to be nonlinear, try the iterative approach if velocities are poorly understood (i.e. implicit through pressure calculation). Of course you need to know fluid density to use Bernoulli, that's obvious.
...and now you know...
Kenneth J Hueston, PEng
Principal
Sturni-Hueston Engineering Inc
Edmonton, Alberta Canada
RE: forces due due to pulsating flow in elbows or valves
RE: forces due due to pulsating flow in elbows or valves