COWLING NUMBER
Definition
A <COWLING NUMBER> is a <NUMBER(math)> that has a <Property> related to the characterization of a steady flow past a fixed object of a conducting fluid, subject to a magnetic field parallel to the flow direction; it is expressed as Co = B^2/mu.rho.nu^2 where B is <MAGNETIC FLUX DENSITY>, mu is A <MAGNETIC PERMEABILITY>, rho is <MASS DENSITY> and nu is <KINEMATIC VISCOSITY>