Hydraulics and Fluid Mechanics in ME
Bulk modulus of a fluid is the ratio of

Critical velocity to the viscosity of fluid
Increase in pressure to the volumetric strain
Shear stress to shear strain
Increase in volume to the viscosity of fluid

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Hydraulics and Fluid Mechanics in ME
In open channels, the specific energy is the

Total energy measured above the horizontal datum
Total energy measured with respect to the datum passing through the bottom of the channel
Kinetic energy plotted above the free surface of water
Total energy per unit discharge

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