Explore: Nusselt Number

In thermal fluid dynamics, the Nusselt number (Nu, after Wilhelm Nusselt) is the ratio of total heat transfer to conductive heat transfer at a boundary

The Sherwood number (Sh) (also called the mass transfer Nusselt number) is a dimensionless number used in mass-transfer operation. It represents the ratio

\mathrm {Pr} }}} where Nu is the Nusselt number; Re is the Reynolds number; Pr is the Prandtl number. The Stanton number arises in the consideration of

diffusivities: Ra = B/μ × ν/α. It is closely related to the Nusselt number (Nu). The Rayleigh number describes the behaviour of fluids (such as water or air)

layer thickness. For incompressible flow over a flat plate, the two Nusselt number correlations are asymptotically correct: N u x = 0.339 R e x 1 2 P r

heat transfer coefficient is often calculated from the Nusselt number (a dimensionless number). There are also online calculators available specifically

Churchill–Bernstein equation is used to estimate the surface averaged Nusselt number for a cylinder in cross flow at various velocities. The need for the

length [m] of the geometry considered. (The Biot number should not be confused with the Nusselt number, which employs the thermal conductivity of the fluid

Kraft Wilhelm Nußelt (Nusselt in English; November 25, 1882, in Nuremberg – September 1, 1957, in Munich) was a German engineer. Nusselt studied mechanical

fluctuations and of the systematic average behavior in mesoscopic systems. Nusselt number Patankar, Suhas V. (1980). Numerical Heat Transfer and Fluid Flow. New