It can also be used to study and predict hot gases as in a flame in air. The number sees uses in fluid mechanics where it is used to predict flow patterns in different fluid flow scenarios. Knowing Re one can anticipate the transition from laminar to turbulent flow which is the main utility of a Reynolds Number calculator. The Reynolds number (Re) is a dimensionless quantity for dynamic similarity and is calculated as the ratio of inertial forces to viscous forces of a flow of liquid. The Reynolds Number calculator will then apply the relevant equation and produce the Reynolds Number (Re) as result.
compressible gases) and fluids of variable viscosity (non-Newtonian fluids). Special consideration should be taken for fluids of variable density (e.g. the inner diameter of a pipe, the diameter of a sphere moving in liquid, or the length of a plate over which the substance is flowing. Finally, enter the characteristic length, e.g.
Then enter the velocity at which the substance is moving. m 2/s, Stokes and centiStokes for kinematic viscosity, imperial and metric/scientific units for density, velocity and length).įirst, select whether you know the substance's kinematic viscosity or the dynamic viscosity and density and then enter the quantities you know. It supports a wide range of input and output measurement units (e.g. With the help of this calculator you can compute the Reynolds Number of a liquid or gas.
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