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Fluids in Motion - eproject - 10-04-2017
Fluids in Motion
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Velocity and Flow Visualization
Primary dependent variable is fluid velocity vector V = V ( r ); where r is the position vector.
If V is known then pressure and forces can be determined.
Consideration of the velocity field alone is referred to as flow field kinematics in distinction from flow field dynamics (force considerations).
Fluid mechanics and especially flow kinematics is a geometric subject and if one has a good understanding of the flow geometry then one knows a great deal about the solution to a fluid mechanics problem.
Centrifugal Classifiers
The same principles that govern the design of gas-solid separators, e.g. cyclones, apply to the design of classifiers.
Solid separator types have been used preferentially as classifiers in mill circuits:
centrifugal cyclone-type and gas path deflection, or
louver-type classifiers.
The distributions of the radial and axial gas velocity in an experimental cyclone precipitator are shown in Figures.
The flow pattern is further characterized by theoretical distributions of the tangential velocity and pressure, the paths of elements of fluid per unit time, and by the streamlines in the exit tube of the cyclone.