Prandtl number

[prahn-tl]

noun Physics, Thermodynamics.

the ratio of the fluid viscosity to the thermal conductivity of a substance, a low number indicating high convection.

Origin of Prandtl number

1930–35; named after Ludwig Prandtl (1875–1953), German physicist
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019