Unformatted text preview: 4. The velocity field for a 2D flow is . (in which A=3 , B=1 , t is in seconds and the coordinates are in meters. Is the flow steady or unsteady? Is it incompressible flow? Find the velocity potential if the flow irrotational. 5. A tornado can be modeled by combing a sink, of strength q=3000 , and a free vortex, of strength K=6000 . Obtain the stream function and velocity potential for this flow field. Estimate the radius beyond which the flow can be treated as incompressible. (Criterion: the distance beyond which the velocity is less than 30% of sound speed). Then find the gage pressure at that radius....
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 Spring '09
 Dr.CharlesMene
 Fluid Dynamics, stream function, velocity field, velocity potential, flow field, stream function velocity

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