Question

The velocity field of incompressible flow in a Cartesian system is represented by

V = 2 ( x 2 y 2 ) i ^ + v j ^ + 3 k ^

Which one of the following expressions for v is valid?

Options :

  1. —4xz + 6xy

  2. —4xz + 6xy

  3. 4xz — 6xy

  4. 4xy + 4xz

Show Answer

Answer :

—4xz + 6xy

Solution :

V = 2 ( x 2 y 2 ) i ^ + v j ^ + 3 k ^

u = 2(x2 – y2)

v = v

w = 3

Putting the values in continuity equation

2 ( x 2 y 2 ) x + v y + ( 3 ) z = 0

⇒  4 x + v y + 0 = 0

⇒  v y = 4 x

⇒ v = -4xy + f(x,z)

Report
More Similar Tests

Related Tests