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
Explore and compute dimensionless fluid mechanical quantities.
Get information about a dimensionless fluid mechanical quantity: