Water 3. V D/2 2- 1 What is the hydrostatic pressure (Pa) at point (2). Do not write the unit. 2207.25 How high (L) will the water rise in the vertical leg relative to the level of the water surface of the stream (m). Do not write the unit. 0.4537 What is the stagnation pressure at point 3, (Pa). Do not write the unit. 6707.25
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- A hydroelectric power plant uses Pelton-type turbines, in which multiple nozzles are used to accelerate the waterwhich is directed onto the turbine blades, which are exposed to an atmospheric pressure of 101.325 kPa. The water enters the nozzles with an absolute pressure of 500 kPa and a speed of 5 m/s, and the nozzle outlets are exposed to atmospheric pressure and have an internal diameter of 5 cm. Consider that the specific mass of water is 1,000 kg/m3. Determine the mass flow rate of water through each of the nozzles, and explain why the actual mass flow rate will be lower.Orange juice is flowing through a horizontal U-type reducing bend at a rate of 36kg/s. The cross-sectional area, gage pressure, and velocity are 168cm^2, 57.5 kPa, and 2.10 m/s at the inlet, and 80cm^2, 50kPa, and 4.37 m/s at the outlet. Calculate the force applied to the reducing bend by the orange juice in the horizontal directionA 2.8-in-diameter horizontal water jet having a velocity of 88 ft/s strikes a curved plate, which deflects the water 180° at the same speed. Ignoring the frictional effects, determine the force required to hold the plate against the water stream.
- In a wind tunnel (or a duct) that consists of a converging nozzle, a throat (constant area), and a diverging diffuser, where does the flow separation occur? What is the reason for this flow separation?A 90° elbow is directs water upwards into the atmosphere from a horizontal pipe with a diameter of 12 cm that is flowing at 20 L/s. The elevation difference between the centers of the exit and the inlet of the elbow is 35 cm. If the weight of the elbow and the water in it are negligible, and assuming a momentum-flux correction factor of 1.03, determine the anchoring force needed to hold the elbow in place.A reducing elbow is used to deflect water flow at 25 L/s in a horizontal pipe upward by an angle of=45° from the flow direction while accelerating it. The elbow discharges water into the atmosphere. The diameter of the elbow is 15 cm at the inlet and 5 cm at the exit. The elevation difference between the center of the exit and inlet is 40 cm. The mass of the elbow and the water in it is 40 kg. Determine the anchoring force needed to hold the elbow in place, assuming a momentum-flux correction factor of 1.03.
- Consider a convergent duct with an inlet area of 3 ft2 and an exit area of 2.57 ft2. Air enters this duct with a velocity of 700 ft/s and a density of 0.002 slug/ft3, and air leaves with an exit velocity of 1,070 ft/s. Calculate the density (in kg/m3) of the air at exit.A U-tube acts like a water siphon. The elbow in the tube is 1 m above the water surface, the tube outlet is L from point A below. When the length L is 5 m, the water emerges from the bottom of the siphon as free jet at atmospheric pressure. Determine the speed of the free jet and the minimum absolute pressure of the water at the elbow. (Patm= 101325 Pa, dsu=1000 kg/m3)A 90" elbow is used to direct water flow at a rate of 0,025 m3/s in a horizontal pipe upward. The diameter of the entire elbow is 10 cm. The elbow discharges water into the atmosphere, and thus the pressure at the exit is the local atmospheric pressure. The elevation difference betwoen the centers of the exit and the inlet of the elbow is 35 cm. The weight of the elbow and the water in it is considered to be negligible. Determine the anchoring force needed to hold the elbow in place A) 27 N 3433.5 N C) 79.5 N D) 132. 9 E) 106. 5 N
- A 16-cm diameter horizontal water jet with a speed of Vj = 20 m/s relative to the ground is deflected by a 40° cone moving to the left at Vc = 10 m/s. Determine the external force, F, needed to maintain the motion of the cone. Disregard the gravity and surface shear effects and assume the crosssectional area of water jet normal to the direction of motion remains constant throughout the flow.Explain the work of Nozzles and diffusers are shaped so that they cause large changes in fluid velocities and thus kinetic energies.Consider an air solar collector that is 1 m wide and 5 m long and has a constant spacing of 3 cm between the glass cover and the collector plate as shown in Figure below, Air flows at an average temperature of 45°C at a rate of 0.15 m/s through the 1-m-wide edge of the collector along the 5-m-long passageway. Disregarding the entrance and roughness effects and the 90° bend, determine the pressure drop in the collector.