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In this case Navier-Stokes fluid flow momentum equation simplifies to Eauler Eauler fluid flow momentum equation.
This flow regime happens for high Reynolds numbers
, which originates from:LaTeX Math Inline body {\rm Re} \gg 1
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The Reynolds numbers should not necessarily to be very high to induce a an inviscid flow and many laimnar flows a laminar flows
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This makes Eauler fluid flow momentum equation a very popular modelling tool in Fluid Dynamics.
In many practical applications the fluid viscosity can not be neglected even for low-viscosity fluids.
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