P Vp Vv B

The operator V = gx? + dy2 + is called the Laplacian operator. The above equation is called "Navier-Stokes equation which first developed by Navier in France.

For inviscid fluids, the equations 2.17, 2.18 and 2.19 will result in:

This is Euler equation which is widely used for describing flow systems in which viscous effects are relatively unimportant.

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