Fluid Mechanics
Uniform fluid flow occurs, when the derivative of the flow variables satisfy the following condition.

∂/∂t = constant
∂/∂t = constant
∂/∂t = 0
∂/∂s = 0

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Fluid Mechanics
Steady flow occurs, when the

Rate of the velocity change is constant
Conditions change steadily with time
Conditions are the same at the adjacent points at any instant
Conditions do not change with time at any point

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