1.
Drag
force on sphere involved six variables-drag Force, diameter, viscosity,
density , velocity and pressure. Find the relation between those.
2.
Determine the pressure difference down a pipe
which depends on fluid properties: density, viscosity, diameter of pipe, length
of pipe, velocity and wall roughness. Find the relation.
3.
For helicopter rotors with tip injection, the thrust (T) of a
blade is functions of tip injection velocity (v), the speed of sound (a), span
(l) rotation rate (ε) translation speed (U), and fluid density (ϱ). How many independent
dimensionless grouping are there? Develop the formula for T in terms of other
properties
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