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Higher Study | Fluid Mechanics | Dimensional and Model Analysis

Which of the following is dimensionless?
The gases are considered incompressible when Mach number is
For circular cylinders, with Reynolds number greater than 1000, how would the Strouhal number behave?
In hydraulic modelling of flow pattern around a body submerged in a fluid the non-dimensional number which has to be kept the same in the model and prototype is:
Hydraulic ram is a pump which works on the principle of
How many groups of variables can be formed of non-dimensional parameters if a dimensionally homogeneous equation contains ‘n’ variables with ‘m’ primary dimensions
In model similarity, if gravitational and inertia forces are the only important forces, then what is the discharge ratio (Note: Lr is the ratio of length dimension)?
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