(Solved): 3.(8\%) Show that the Navier-Stokes equations becomes Bernoulli equations und ...

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3.(8\%) Show that the Navier-Stokes equations becomes Bernoulli equations under potential flow assumptions. 4.(4\%) The real flow is viscous. Please comment why the potential flow theory that ignores the viscosity $${?}_u)$$ still can be applied in many situations. $$?$$ 5. (8\%) For a flow field with rigid body rotation $$\left({\mathrm{v}}_{?}=?\mathrm{r}\right)$$, calculate its vorticity and shear strain rate. 6.(4\%) For Moody chart, the main parameters are Reynolds number and roughness. Why the Reynolds