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Question
Considering the velocity as one of the flow characteristics, which of the following expression can be written for one-dimensional unsteady flow?
A.
u = f(x, y, z, t)
B.
u = f(x, y, t)
C.
u = f(x, t)
D.
u = f(x, y, z)
Answer ( Option C)

u = f(x, t)

Solution

Type of Flow Steady Unsteady
1 - D V = f(x) V = f(x, t)
2 - D V = f(x, y) V = f(x, y, y)
3 - D V = f(x, y, z) V = f(x, y, z, t)

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