A gate, in one side of a large tank, is rectangular is shape 3 m broad and 2 m deep. The water level on one side of the gate is 5.5 m above its top edge. The water level on the other side of the gate is 0.5 m below its top edge. Calculate the discharge through the gate per second, if Cd = 0.625
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- A rectangular orifice of 1.5 m wide and 1.2 m deep is fitted in one side of a large tank. The water level on one side of the orifice is 2 m above the top edge of the orifice, the water level is 0.4 m below its top edge. Calculate the discharge through the orifice if Cd=0.62.Problem 1. A water reservoir with dimensions of 10 x 10 × 10 m is connected to 3 pipes. Water is entering the tank at velocity u1 = 0.1 m/s through the inlet pipe, which has a cross-sectional area A1 0.5 m?. The bottom outlet pipe has a mass discharge rate of 30 kg/s. Given that currently the water surface is 3 m below the top outlet pipe, and the outlet pipe has a cross-sectional area A3 0.1 m²: 1. Determine the rate of mass increase in the reservoir. 2. How long will it take before the water surface reach the bottom surface of the top outlet pipe? 3. What would be the water velocity in the top outlet pipe? -A, 3m V, A, -M2 Figure 1: A water reservoir is connected to 3 pipes.01(a) There are two reservoirs, A and B, with the water surface elevation in A 10 m higher than that in B. These are connected through two pipes in series with pipe 1 starting from A and pipe 2 ending in B. Lengths of both the pipes are 100 m, diameter of pipe 1 is 30 cm and diameter of pipe 2 is 25 cm. At the junction of these pipes, water is being withdrawn at the L v² D 2g rate of 0.02 m³/s. Friction loss in the pipes is given by h = f and the Darcy friction, f, entrance and at the junction, for both pipes is 0.02. Neglecting the head losses at the estimate the total water withdrawal from reservoir A.
- SITUATION 6: A 0.0075 m2 orifice is attached at the side of a tank with a head of 6.7 m. The coefficient of velocity and coefficient of discharge are 0.98 and 0.72, respectively. 26. Find the actual flow rate. a. 0.0619 m3 b. 0.0215 m3 REVIEW c. 0,0809 d. 0.0975 m³ 27. The area of water jet out the orifice is most Vikely equal to a. 0.0021m2 b. 0.0037m2 d. 0.0051m2 c. 0.0019m² 2. 28. The ideal efflux velocity of the orifice. m. a. 11.465 b. 7.732 RE c. 9.532 d. 10.237Two tanks A and B have 80 m difference in water levels, and are connected by a pipe 0.3 m diameter and 8 km long with 0.002 friction coefficient. The pipe is tapped at its mid point to leak out 35 1/s flow rate. the discharge leaving tank A? Determine Find the discharge entering tank B? Coefficient (Tank Exit) = 0.5 %3D Coefficient (Tank Entry) = 1 ba %3D be 80 m Q1 Q² Q3QUESTION 2 A vertical circular tank that is 1.5 m high, has sloping sides. The tank is 50 m and 30 m in the top and bottom diameters respectively. Discharge takes place through a triangular orifice situated at the bottom of the tank. The orifice has a base of 0.8 m long, 0.5 m below its vertex. If the tank is originally full of water, what time is required to empty the tank? Take discharge coefficient as 0.63.
- A small orifice 0.0003 m³ in area is in the vertical side of a rectangular tank. The horizontal sectional area of the tank is 0.40 m². At a given instant the head on the orifice is 1.2 m and 312 sec later it is 0.6 m. Compute the value of the coefficient of discharge C. (5 pts.) Using a coefficient of discharge of 0.60, how long will it take to lower the water surface from 1.2 m to 0.80 m. (5 pts.) Using C=0.60, what will be the heigh of water from 1.2 m after a lapse of 240 sec. (5 pts.)1. A 1 meter diameter pipe 1400 m long has a discharge of 600 liters/ sec a. Compute the head loss using f = 0.018 b. Compute the head loss using n = 0.015 c. Compute the head loss using C = 100 %3D %3D %3DN.S/m?) Q.4. Three pipes having lengths 1000 m, 800 m, 1200 m and dia. 250 mm, 200mm and 300 mm, Hazen- Williams coefficient (C) 120, 100, 140 respectively are connected in parallel between two points, A and B. When total discharge of 0.3 m³/s flows through the system, calculate the discharge in each pipe and head loss between A and B. Pipe 1 Q=0.3 m³/sec Pipe 2 Pipe 3 IGD The rapid mixing tank will have a
- Three pipes 1,2 and 3 connect three reservoirs A, B and C, respectively, and meet at junction D. The elevation of A is 300 m while that of C is 277m. The rate of flow out of the reservoir B is 560Lit/sec. Pipe Length (m) Diameter (mm) Friction Factor 1 1200 800 0.0175 2 800 450 0.0208 3 1800 500 0.0183 Which of the following nearly gives the rate of flow in pipe 1? a. 45.91 L/s b. 122 L/s c. 459.78 L/s d. 514.09 L/s Which of the following nearly gives the rate of flow in pipe 3? a. 100.22 L/s b. 45.91 L/s c. 459.78 L/s d. 514.09 L/s Which of the following nearly gives the elevation of reservoir B? a. 360.55 m b. 336.67 m c. 323.37 m d. 3.90 mPROBLEM: a A 900 mm concrete pipe 1500 m long draws water from reservoir A. At its lower end it is joined with a 750 mm concrete pipe 1200 m long drawing water from reservoir B, both pipes discharging into 1200 mm concrete pipe 2400 m long. If the 1200 mm pipe discharges into a reservoir with water surface 4.5 m lower than the water surface in A and 6m lower than the water surface in B, determine the discharge. Assume f= 0.02. Solution: he R L= 1500 m D=900 mm 0.0826 fLQ2 hf2 L-1200 m D = 750 B hf₁ hf3 с 4.5m L= 2400 m D= 1200 mm GmTwo open tanks are connected by an orifice having a cross sectional area of 0.004 m^2. Tank A is 8m^2 in area and tank B is 2m^2 in area. Water level in tank A is 10m higher than that in tank B. If the coeffiecient of discharge is 0.60 A. Find the discharge flowing in the orifice Choices: 56.0 L/s, 42.2 L/s ,38.5 L/s, 33.6 L/s B. How long will it be before the water surfaces are at the same level? Choices: 15.9min,17.3min,10.8min,12.4min C.How soon after will the water surfaces be 4m apart? Choices: 350secs,737secs,215secs,202secs