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 2 of 4.
Arun said:
8 years ago
Through convergent section : kinetic energy will increase and presser energy will decrease.
Through Divergent section : kinetic energy will decrease and pressure energy will increase.
Through Divergent section : kinetic energy will decrease and pressure energy will increase.
Er. P. C. Meena said:
4 years ago
According to Bernoulli equation in divergent portion Area increases, than Kinetic energy decreases, thus pressure energy also increases.
So, exactly Pressure energy increases.
So, exactly Pressure energy increases.
Umesh said:
6 years ago
In divergent portion, velocity is supersonic so velocity is increase as increase in area of nozzle.
As per Bernoulli's equation, velocity increase will decrease pressure.
As per Bernoulli's equation, velocity increase will decrease pressure.
Salahuddin said:
6 years ago
Why draft tube is used in turbine?
To convert part of kinetic energy into pressure head, right?
In the same way. In the divergent part, pressure increases.
To convert part of kinetic energy into pressure head, right?
In the same way. In the divergent part, pressure increases.
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.
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.
Nilesg harhila said:
6 years ago
The answer is B.
Divergent portion velocity decrese and pressure increase exit.
Divergent portion inlet velocity increase and pressure decrease.
Divergent portion velocity decrese and pressure increase exit.
Divergent portion inlet velocity increase and pressure decrease.
Sandeep chaure said:
5 years ago
As we know the pressure is calculated by formula gamma *h, hence h will become less than in convergent portion so the answer is "decreases".
Raghu said:
6 years ago
The answer should be B. If it decreases it doesn't obey the Bernoulli's equation which is on principle of conservation of energy.
Aneesh said:
4 years ago
According to NPTEL, pressure increases as velocity reduces in the Divergent section So, the answer should be Option B.
(4)
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