Navier's Equation

The general equation of fluid flow

where  and  are coefficients of viscosity,  is the velocity of the fluid parcel, and  is the fluid density.

REFERENCES:

Eringen, A. C. and Suhubi, E. S. Ch. 5 in Elastodynamics, Vol. 2. New York: Academic Press, 1975.

Zwillinger, D. Handbook of Differential Equations, 3rd ed. Boston, MA: Academic Press, p. 139, 1997.