List of top Fluid Mechanics Questions on Fluid Dynamics

The Rational Method formula for estimating peak runoff is given as \(Q = \frac{CiA}{360}\). For the result \(Q\) to be in cubic meters per second (\(m^3/s\)), what must be the units of rainfall intensity (\(i\)) and catchment area (\(A\))?

Match the Gradually Varied Flow (GVF) profiles on a mild slope (\(M_1, M_2, M_3\)) with the nature of their water surface slope (\(dy/dx\)) relative to the flow direction.

Profile & Nature of Slope (\(dy/dx\))
P. \(M_1\) Profile & 1. Positive (Rising Curve)
Q. \(M_2\) Profile & 2. Negative (Drawdown Curve)
R. \(M_3\) Profile & 3. Positive (Rising Curve)

Select the correct classification:

In a rectangular open channel, a hydraulic jump occurs. The ratio of the post-jump depth (\(y_2\)) to the pre-jump depth (\(y_1\)) is measured to be 2. What is the Froude number (\(Fr_1\)) of the flow immediately before the jump?