The general equation of fluid flow
 |
where 
and 
are coefficients of viscosity, 
is the velocity of the fluid parcel, and 
is the fluid density.
Navier's Equation
See also
Navier-Stokes EquationsExplore with Wolfram|Alpha
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.Referenced on Wolfram|Alpha
Navier's EquationCite this as:
Weisstein, Eric W. "Navier's Equation." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/NaviersEquation.html