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Chapter 8 Solutions
Applied Fluid Mechanics (7th Edition)
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- A 150mm diameter penstock supplies water to a turbine under a constant head of 30m. Calculate the theoretical velocity of flow.arrow_forwardQuestion 8 Two reservoirs are connected by a pipe whose total length is 360m.From the upper reservoir the pipe is 300mm in diameterfor a length of 150m and the remaining 210m is 450mm in diameter.The difference in water levels between the two reservoirs are 8m.Take f=0.006 for the smaller pipe and f=0.005 for the larger pipe.If all the changes in pipe sections are sharp and sudden, calculate the flow rate which can be delivered.arrow_forwardCalculate the minimal head of the pump required to pump 1 m³ of water per second to the height 10 m trough a pipe with cross sectional area 0.1 m². Assume constant friction coefficient f = 0.04 and neglect all losses in fittings. The pump head is the gravity head plus losses and so it can be found?arrow_forward
- . A venturimeter with 75 mm diameter throat is placed in a 150 mm diameter pipeline carrying water. The pressure drop between the upstream tap and the venturi throat is 40 kPa. Find the flow ratearrow_forwardWater flows at a rate of 500 gal/min through a 400-ft-long line. The first and last 100 ft of the line are 6-in-diameter cast iron pipes, while the middle 200 ft consists of two 4.24-in-diameter cast iron pipes. Find: a. Provide a diagram b. the average velocity in each section of pipe, c. the pressure drop in each length of pipe, and d. the total pressure drop.arrow_forwardWater from a nearby lake is to be used for a fountain and a water tank. The figure below shows the elevations and pipe connections. It is desired that the jet water of the fountain reaches a height of at least 2.5 m from the nozzle outlet. As for the tank, it is elevated in order for it to distribute water using gravity. The specifications of nozzle, suction and discharge pipes are given in the table below. Assuming negligible minor head losses, what is the minimum power input to the pump in kW? Take pump efficiency to be 88% and motor efficiency, 95%. Water from the fountain is returned to the lake through a drainage (not shown in the figure). round off the answer to 4 decimal placesarrow_forward
- Convert 50 GPM to ft/s in a 4" Sch 40 pipearrow_forwardPressures at the start and end of a straight horizontal pipe pumping water are measured as 2560337.6Pa and 168693.4Pa, respectively. Calculate the head loss due to friction. (Lemme Know If anything missed)arrow_forwardA fire pump delivers water through a 150 mm main to a hydrant to which is connected a 75 mm hose, terminating in a 25 mm nozzle. The nozzle is 3 m above the hydrant and 18 m above the pump. Assuming a total frictional loss of 18.5 m from the pump to the base of the nozzle, and a loss in the nozzle of 10 per cent of the velocity head in the jet, and neglecting air resistance, what gage pressure at the pump is necessary to throw a stream 30 m vertically above the nozzle?arrow_forward
- Water (@75C) flows horizontally in a pipe at a rate of 1.6 m3 / min . The dia of the outlet is 2 inches. It enters a 3 inches 45 deg. elbow and is diverted upwards into a connecting pipe. If the pressure just before the elbow is 78 kPa, calculate the magnitude and direction of the force necessary to keep the elbow in place. Say, frictional losses in the elbow are negligible.arrow_forwardA 3' diameter ppe flows full when it carries 30 cfs. find the discharge and depth in the pipe if the velocity is 3fpsarrow_forwardA uniformly tapering pipe has 120mm and 80mm diameters at its ends. If the velocity of water at the larger end is 2m/s, find the discharge at the larger end and velocity head at the smaller end.arrow_forward
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