Find the capillary rise in a tube for a water glass interface (teta) = 0° if the tube radius is 1mm and the density is 1000 kg/m³. Surface tension of water is 0.0728 N/m.
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- Assuming that pressure will increase at a uniform rate and there is no damping of the pressure wave. Water from a reservoir that flows through a 650mm pipe at 1.8m/s is completely stopped by a closure of a 160 m valve from the reservoir. The thickness of the pipe is 25mm, bulk modulus of water is 2.2x10⁹ Pa and E of steel is 1.4x10¹¹ Pa. Determine the following: a. Celerity of the pressure wave b. Equivalent bulk modulus of water c. Pressure on the pipe after closure of the valve d. Time required to avoid water hammer e. Water hammer pressure of the velocity will decrease to 1.2m/s f. Maximum permissible discharge after the outlet valve closure. ANSWER: d) t = 0.256 sec. e) Ph=pCAV = 749.8476 kPa f) Q = AV = 0.597 m³/s a) C = 1249.746m/s b) k' = 1.562x10⁹ Pa c) Ph=pCV = 2249.5428 kPaa.) Find the bulk modulus of elasticity of a liquid if a pressure of 150 psi applied to 10 ft3 of the liquid causes a volume reduction of 0.02 ft.3. b.) Find the capillary rise in the tube for a water-air-glass interface (θ = 0°) if the tube radius is 1 mm. Surface tension is 0.0728 N/m.Liquid, with density of 900 kg/m3, rises to a height of 4.5 mm in a capillary tube of radius r. Find r (in mm) assuming the surface tension 0.072 N/m, and the contact angle of the liquid and glass capillary tube is 15°.
- A welded steel cylindrical drum made of a 10-mm plate has an internal diameter of 1.20 m & height of 4m. Compute the change in length that would be caused by an internal pressure of 1.5 MPa. Assume that Poisson's ratio is 0.30 andE = 200 GPa. * thickness, t= 10 mm 1.20 m O 0.270 mm O 0.360 mm O 0.108 mm O 0.459 mm.Ex.1 Ans. A glass tube 0.25 mm in diameter contains a mercury column with water above the mercury. The temperature is 20°C at which the surface tension of mercury in contact with water is 0.037 kg()/m. What will be the capillary depression of the mercury? Take angle of contact 0= 130°. 3.02 cmA copper tube 80 mm diameter and 2.5 mm thick is plugged at its ends and filled with water without applying any external pressure . It is observed that when an axial push is applied at ends , the water pressure rises to 0.12 N / mm² . Find value of axial push . Take Ecu = 102 GPa , Kwater = 2.2 GPa and μ = 0.32 .
- Water from a reservoir flowing through a deformable 600mm diameter pipe with a velocity of 2.5m/s is completely stopped by a closure of a valve situated 400m from the reservoir. Assume that the pressure increases at a uniform rate and that there is no damping of pressure wave. The pipe has a thickness of 20mm. Bulk modulus of water is 2.20x10°Pa and modulus of elasticity of steel is 0.14x10 Pa. Find the water hammer pressure for instantaneous valve closure.Find the capillary rise in a tube shown for a water- glass interface. ∅=0 if the tube radius is 1mm and the density is 1000kg/m³. Surface tension of water is 0.0728 N/m.a material has a grain diameter of 0.0005 cm. What height of capillary rise will you expect? The following data applies: The surface tension of water: 73 g/s2 Wetting angle: 0 degrees.
- A 600-mm diameter non-rigid pipe conveys water from a reservoir with a velocity of 2.50 m/s. The flow is suddenly stopped by the closure of a valve situated 200m from the reservoir. Assume that the pressure increases at a uniform rate and that there is no damping of the pressure wave. The pipe has a thickness of 20mm and a modulus of elasticity of 1.40x1011 Pa. The bulk modulus of elasticity of water is 2.20x10° Pa. Which of the following most nearly gives the celerity of the pressure wave? O 1,108.92 m/s O 1,286.47 m/s O 1,222.76 m/s O 1,483.24 m/sA3 mm diameter tube is inserted into a fluid with Surface tension is 0.04 N/m, Density 1400 kg/m Wetting angle is 7°. Calculate the capillary rise.VECHANICS OF D. 5. 73.8% THERMAL STRESS Steel Rod d = 20 mm L = 5 m E = 200 GPa a = 11.70 µm/(m-°C) p = 8,000 kg/m³ 1. A steel rod is positioned vertically as shown in the figure. It is fixed at one end and unsupported at the other end. An external force (F = 800 N) is applied to the free end of the rod the same time when the temperature is raised by 25 C. Assume that all deformations will happen at the same time, compute the stress developed in the steel rod if the gap between the free end of the steel rod and the ground is 0.20 mm. %3D GAP