Navier-Stokes equations

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The Navier-Stokes equation is an equation in fluid mechanics that states:

where is the pressure difference (expressed as the partial derivative of pressure in each dimension), is the total derivative of velocity, is the kinematic viscosity of the fluid, is the density of the fluid, and is the gravitational acceleration. [1]

In Incompressible flow


  1. A.J. Smits, "A Physical Introduction to Fluid Mechanics," John Wiley & Sons, ISBN 0-471-25349-9