Problem 4: Water flow rate in an open channel is measured using a right angled V notch. The head of water over V notch is 0.15 m. Assuming the coefficient of discharge of the notch as 0.65, calculate the discharge in the channel. Ans: Q= 0.0134 m³/ sec.

On a circular conduit there are different diameters: diameter D1 = 2 m, changes into D2 = 3 m. The velocity in the entrance profile was measured: v1 = 3 m/s. Calculate the discharge and mean velocity at the outlet profile (see figure below). Determine also type of flow in both conduit profiles (whether the flow is laminar or turbulent) – temperature of water T = 12° C. (use Reynold’s number Re), For laminar flow: Re<2320, For turbulent flow Re>2320, Kinematic viscosity of water of 12°C, v is equal to 1,24 10^-6 m2/s.

In venturimeter experiment, The head at converging part & throat are h1 = 38.6 cm, h2= 34.3 cm respectively. The actual discharge as 282 LPH. Find the theoretical discharge and coefficient of discharge. Take the area of converging and throat part as 338.6 mm2, 84.6 mm? respectively. Theoretical discharge (unit in m'/s) = Actual discharge (m³ /sec) = ce offEiriont of dicc- baras cdu

Q.10. The flow net below represents air flowing over a small hill. 1.8m .d 1.5m 1.2m 0.9m • a 2m At the inlet, the streamlines are evenly spaced 2 m apart, and the air flow is a uniform 3 m/s. a. Taking the ground to be = 0 m²/s, what are the values of the streamlines A-C? b. Find the air flow speed, and the corresponding gauge pressure, at each of the points a-d at the crest of the hill. c. The stream and potential lines have been drawn to be approximately square. As- suming this to be the case, what is the value of the potential drop Aø1 and A¢2.