Mechanical Engineering - Hydraulics and Fluid Mechanics - Discussion
Discussion Forum : Hydraulics and Fluid Mechanics - Section 5 (Q.No. 5)
5.
The pressure of the liquid flowing through the divergent portion of a venturimeter
Discussion:
38 comments Page 3 of 4.
Waseem iqbal said:
1 decade ago
Yes @Prasad according to Bernoulli equation.
Summation of total energy of fluid at a point remains same.
So potential energy terms cancel out.
And according to continuity equation we know velocity will decrease with increase in area in diverging portion so as the kinetic energy increase and according to bernoulli eq pressure must decrease otherwise law of conservation of energy will be violent.
Summation of total energy of fluid at a point remains same.
So potential energy terms cancel out.
And according to continuity equation we know velocity will decrease with increase in area in diverging portion so as the kinetic energy increase and according to bernoulli eq pressure must decrease otherwise law of conservation of energy will be violent.
Rahul said:
1 decade ago
@Waseem.
If the velocity of flow decreases then kinetic energy should also decrease and hence pressure will increase according to Bernoulli equation.
If the velocity of flow decreases then kinetic energy should also decrease and hence pressure will increase according to Bernoulli equation.
Ravi said:
1 decade ago
In order to maintain the total energy to be constant according to Bernoulli pressure should increase.
Kaushal kishore said:
1 decade ago
From continuity equation: Area in divergent section increases correspond to the decrease in velocity.
And by Bernoulli's theorem, if kinematic head decreases correspond to the increase in pressure head.
And by Bernoulli's theorem, if kinematic head decreases correspond to the increase in pressure head.
BALASAHEB said:
1 decade ago
Pressure should be always increases in divergent section.
Shubham gondane said:
10 years ago
According to Bernoulli's theorem pressure must increases at divergent section.
Soumya said:
9 years ago
Pressure should increase through the divergent portion.
Knowledge said:
9 years ago
Pressure must increases at divergent section.
AKKI said:
9 years ago
In divergent, pressure should be increased.
Prasad said:
1 decade ago
Part of the kinetic energy at the throat will convert back to pressure energy, and so pressure should increase in the divergent (or Enlarging) portion.
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