#jsDisabledContent { display:none; } My Account |  Register |  Help

Stuart number

Article Id: WHEBN0034706149
Reproduction Date:

 Title: Stuart number Author: World Heritage Encyclopedia Language: English Subject: Collection: Publisher: World Heritage Encyclopedia Publication Date:

Stuart number

The Stuart number (N), also known as magnetic interaction parameter, is a dimensionless number of fluids, i.e. gases or liquids.

It is defined as the ratio of electromagnetic to inertial forces, which gives an estimate of the relative importance of a magnetic field on a flow. The Stuart number is relevant for flows of conducting fluids, e.g. in fusion reactors, steel casters or plasmas.[1]

Definition

\mathrm{N} = \frac {B^2 L_c \sigma}{\rho U} = \frac{\mathrm{Ha}^2}{\mathrm{Re}}

References

1. ^ D. Lee, H. Choi, (2001), "Magnetohydrodynamic turbulent flow in a channel at low magnetic Reynolds number" (in German), Journal of Fluid Mechanics 439: pp. 367–394, doi:10.1017/S0022112001004621