1.

The continuity equation of two- dimensional steady incompressible flow is _______

A. ( frac{ u}{ x} + frac{ u}{ y} ) = 0
B. ( frac{ u}{ x} + frac{ u}{ y} ) = 1
C. ( frac{ u}{ x} * frac{ u}{ y} ) = 0
D. 0
Answer» B. ( frac{ u}{ x} + frac{ u}{ y} ) = 1


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