Energy Considerations in a Steady FlowTuesday, May 3, 2011 15:24
Whenever Fluid is moving in a certain pipe line then the fluid must contain certain energy. The energy sustain by the fluids are following.
- Kinetic Energy.
- Potential Energy.
- Pressure Energy.
Kinetic Energy :
Energy in a body due to its motion is known as kinetic energy.
A body of mass m is moving with velocity v possesses a kinetic energy,
KE= ½ (mv2)
We know that w= mg
By putting this value in equation KE= ½ (mv2).
We get KE= wv2/2g.
Potential Energy :
The energy of the fluid particles due to position or elevation of the fluid from the datum is known as potential energy.
we know the w=mg
Where z is the elevation of the fluid from the datum.
The energy of the fluid particles due to pressure existing in the pipeline is called pressure energy.
Where p is the pressure, w is the weight of the fluid and γ is the specific weight of the fluid.
Total Energy :
The Total energy carried by the fluid particles in a pipeline will be considered as total energy of the fluid. Total energy will be the sum of all the above described energies.
T.E=k.E+ P.E+ Pressure Energy