(50%): In a 45° bend a rectangular air duct of 1m? cross-sectional area is gradually reduced to 0.5 m² area as shown in Fig. below (top view). Find the magnitude and direction of the force required to hold the duct in position if the velocity of the flow (vi=10m/s), and pressure is 29430 Pa. Take pair = 1.16 kg/m?.

(50%): In a 45° bend a rectangular air duct of 1m? cross-sectional area is gradually reduced to 0.5 m² area as shown in Fig. below (top view). Find the magnitude and direction of the force required to hold the duct in position if the velocity of the flow (vi=10m/s), and pressure is 29430 Pa. Take pair = 1.16 kg/m?.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

Topic: Bernoullis Theorem. Draw Free Body Diagram. Use 4 decimal places. Show full solution
The flow rate of water flowing out of an 80mm diameter nozzle shown in Figure 1 is 60 litre/s. The volume of the water in the pipe bend is 50 litres and the pipe bend is installed in a vertical plane. The head loss from point 1 to 2 is 0.44m. Calculate the x and y for components of the thrust block to hold the pipe bend. Horizontal Thrust block 30° 50° Open end Ø80 mm Ø 160 mm Figure 3 Cs Scanned with CamScanner Vertical
4. A 25 mm diameter shaft is pulled through a cylindrical bearing as shown (not rotating). Oil is used as a lubricant and fills the 0.3 mm gap between the shaft and the bearing. The kinematic viscosity of the oil is 8.0 x 10-4 m²/s and the specific gravity is 0.91. Determine the force P required to pull the shaft at a velocity of 3 m/s. Assume the velocity distribution in the gap is linear (i.e. Couette flow). Draw the free body diagram and show the forces. Bearing Shaft 0.5 m- Lubricant
5. Z is a draft tube is a) Temperature difference b) Pressure drop c) Kinetic energy difference d) Datum head View Answer
Q4: A tank of water empties by gravity through a horizontal pipe into another tank in figure (1) .There is a sudden enlargement in the pipe as shown.At a certain time the difference in levels is 3m.Each pipe is 5m long and has a friction coefficient Cf-0.007 The inlet loss constant is K=0.5 and bore diameter in point A 20mm ,and bore diameter in point B 60mm.Calculate this point. the volume flow rate at Calculate the volume flow rate at this point. (1) 20 mm bore diameter 3 m 60 mm bore diameter (2)
Note:hand written solution should be avoided.
Water flows at a rate of 107L /s round a 1510 contracting pipe bend which lies in a horizontal plane. The diameter at the bend entrance is 771mm and at the exit 418mm. If the pressure at the entrance to the bend is 256kN/m2, determine the resultant force in the Horizontal direction (taking to the Left as positive) exerted by the fluid on the bend, correct to the nearest N. (Use π = 3.14)
... 4m 2m Hinge Water 50cm 420cm 30cm B.
Flat plate of area 106 mm2 is pulled with a speed of 0.4 m/s. relative to another plate located at a distance of 0.1 mm from d. Find force and power (consider Dynamic viscosity = 2 poise)
The tank shown has one curved surface restraining a body of static fluid with 3.55 kPa air pressure above the fluid and sg = 0.88, with the following dimensions: w = 5.50 m h1 = 2.1 m D1 = 0.85 m Required Compute the magnitude of the resultant force, in kN, to the nearest 100th. Fluid sg = given hl D1
For a vertical rectangular gate, one side has linseed oil (0.938) and the other has two fluids—castor oil (0.96) and water. Considering a unit-width of the gate, apply the PRESSURE PRISM CONCEPT (Illustrate and label the pressure diagram/prism) to calculate the magnitude and direction of the following when z=20ft. a. The hydrostatic force due to linseed oil F1. b. The hydrostatic force due to castor oil F2. c. The hydrostatic force due to water. d. The net hydrostatic force acting on the gate Fnet