Stanton number

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The Stanton number is a dimensionless number which measures the ratio of heat transferred into a fluid to the thermal capacity of fluid. It is used to characterize heat transfer in forced convection flows.

<math>\mathit{St} = \frac{h}{c_p\cdot\rho\cdot V}</math>

where

• h = convection heat transfer coefficient
• <math>\rho</math> = density of the fluid
• c_p = specific heat of the fluid
• V = velocity of the fluid

It can also be represented in terms of the fluid's Nusselt, Reynolds, and Prandtl numbers:

<math>\mathit{St} = \frac{\mathit{Nu}}{\mathit{Re}\cdot\mathit{Pr}}</math>

where

• Nu is the Nusselt number
• Re is the Reynolds number
• Pr is the Prandtl number

v • d • e Dimensionless numbers in fluid dynamics

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it:Numero di Stanton