Newton number (also called the drag coefficient) and Archimedes number are plotted versus the Reynolds number for the laminar, transition and turbulent flow types using a log-log scale. A numerical example of the terminal fall velocity computation of a single spherical particle in a Newtonian fluid, for the turbulent flow type, is given in the program. For laminar flow, the terminal velocity expression is given by the well-known Stokes? law. Measurement of terminal fall velocity has important applications such as viscosity determination (e.g. falling-sphere viscometer) and decanter sizing.
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