Dimensionless quantities represent special combinations of physical quantities relevant to a physical system, and they often characterize the behavior of that system. Use Wolfram|Alpha to look up definitions and compute values of important dimensionless quantities in fluid mechanics, from the Reynolds number to the Rayleigh number to the Nusselt number.

Fluid Mechanics Dimensionless Quantities

Dimensionless parameters for fluid mechanical systems.  Formulas and definitions for dimensionless combinations of physical quantities that are important in the study of fluid mechanics.

drag coefficient in water, area = 1 m^2, 10 N

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Fluid Mechanics Dimensionless Quantities

Fluid Mechanics Dimensionless Quantities

Get information about a dimensionless fluid mechanical quantity:

Compute a dimensionless fluid mechanical quantity:

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