Why are converging section of venturi meter velocity increases and pressure decreases?
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We know that in convergent section flow is accelerated and decelerated in divergent section (in subsonic flow) from famous Bernoulli equation (for incompressible, inviscid flow) –
So in convergent section fluid velocity is increases and static pressure (p) decreases and opposite happens in divergent section i.e. static pressure (p) increases. In mathematical term we can write –
· In convergent section : pressure gradient = dP÷dx<0
· In divergent section: pressure gradient = dP÷dx>0
hope it helped you....
So in convergent section fluid velocity is increases and static pressure (p) decreases and opposite happens in divergent section i.e. static pressure (p) increases. In mathematical term we can write –
· In convergent section : pressure gradient = dP÷dx<0
· In divergent section: pressure gradient = dP÷dx>0
hope it helped you....
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