Saturday, 15 October 2016

Civil gate questions

For a two-dimensional irrotational flow, the velocity potential is defined as φ = In(x2+y2). Which of the following is a possible stream function, ψ, for this flow?
(a) 1/2tan-1 (y/x)
(b) tan-1 (y/x)
(c) 2 tan-1 (y/x)
(d) 2 tan-1 (x/y)

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