Question: 2. Consider a two-dimensional velocity field given by u=2x2t and v=4xyt. (a) Show that the flow field is incompressible; (b) if =0 at point (0,0)

2. Consider a two-dimensional velocity field given by u=2x2t and v=4xyt. (a) Show that the flow field is incompressible; (b) if =0 at point (0,0) and time t=1, calculate the expression of stream-function , (c) Calculate the acceleration of the material point at position (1,1) and t=1 (15 )

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