The Stanton number, St, is a dimensionless number that 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.
where
- h = convection heat transfer coefficient
- = density of the fluid
- cp = 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:
where
- Nu is the Nusselt number
- Re is the Reynolds number
- Pr is the Prandtl number
The Stanton number arises in the consideration of the geometric similarity of the momentum boundary layer and the thermal boundary layer, where it can be used to express a relationship between the shear force at the wall (due to viscous drag) and the total heat transfer at the wall (due to thermal diffusivity).
The Stanton number is named after Thomas Edward Stanton (1865–1931).
Famous quotes containing the words stanton and/or number:
“When women can support themselves, have entry to all the trades and professions, with a house of their own over their heads and a bank account, they will own their bodies and be dictators in the social realm.”
—Elizabeth Cady Stanton (1815–1902)
“The two great points of difference between a democracy and a republic are: first, the delegation of the government, in the latter, to a small number of citizens elected by the rest; secondly, the greater number of citizens and greater sphere of country over which the latter may be extended.”
—James Madison (1751–1836)