Applied Fluid Mechanics (7th Edition)
7th Edition
ISBN: 9780132558921
Author: Robert L. Mott, Joseph A. Untener
Publisher: PEARSON
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Chapter 15, Problem 15.10PP
An orifice meter is to be installed in a 12-in ductile iron pipe carrying water at
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A venturi meter has an inlet diameter of 65 mm and a throat diameter of 26 mm. When measuring the flow of a liquid of density 898 kg/m³ the reading of a mercury differential pressure gauge was 71 mm. Take the coefficient of the meter as 0.97 and the specific gravity of mercury as 13.6. Estimate the flow through the meter in m³/h.
In a venturemeter used for measuring the flow of oil (S = 0.85) through a horizontal pipeline, the pipe diameter is 2.4 times the diameter at the throat. Connections are made from the entrance to the meter and the throat to a vertical U tube containing mercury.
If the difference level between the fluids in the U-tube arms is (x +1/S.N ) in cm, where S.N. is student serial number. Neglect friction in the pipe. Find an expression in terms of x for the velocity of the oil in the pipe.
A venturi meter measures the flow of water in a 75mm diameter pipe. The difference between the throat and the entrance of the meter is measured by the U-tube contains mercury which is being in contact with the water. Calculate the diameter of the throat if the difference in level of mercury is 250mm when the quantity of water flowing in the pipe is 1.55m3/min. Assume coefficient of discharge is 0.97.
Chapter 15 Solutions
Applied Fluid Mechanics (7th Edition)
Ch. 15 - List six factors that affect the selection and use...Ch. 15 - Define range as it relates to flowmeters.Ch. 15 - Describe three methods for calibrating flowmeters.Ch. 15 - Prob. 4RQCh. 15 - Prob. 5RQCh. 15 - Prob. 6RQCh. 15 - Prob. 7RQCh. 15 - What is the nominal included angle of the...Ch. 15 - Why is there such a difference between the angles...Ch. 15 - Prob. 10RQ
Ch. 15 - Prob. 11RQCh. 15 - Describe an orifice meter and how it is used.Ch. 15 - Describe a flow tube and how it is used.Ch. 15 - Of the venturi, the flow nozzle, the flow tube,...Ch. 15 - Describe pressure loss as it relates to flowmetersCh. 15 - Rank the venturi, the flow nozzle, the orifice,...Ch. 15 - Prob. 17RQCh. 15 - Prob. 18RQCh. 15 - Prob. 19RQCh. 15 - Describe a magnetic flowmeter and how it is usedCh. 15 - Describe how mass flow irate can be measuredCh. 15 - Describe a pitot tube and how it is used.Ch. 15 - Prob. 23RQCh. 15 - Prob. 24RQCh. 15 - Prob. 25RQCh. 15 - Prob. 26RQCh. 15 - Describe the method used to measure the average...Ch. 15 - Prob. 28RQCh. 15 - Describe a hot-wire anemometer and how it is usedCh. 15 - Prob. 30RQCh. 15 - A venturi meter similar to the one in Fig. 15.2has...Ch. 15 - Air with a specific weight of 12.7N/m3 and a...Ch. 15 - Prob. 15.3PPCh. 15 - Prob. 15.4PPCh. 15 - Prob. 15.5PPCh. 15 - Prob. 15.6PPCh. 15 - Prob. 15.7PPCh. 15 - An orifice meter is to be used to measure the flow...Ch. 15 - A flow nozzle is to be installed in a 5-in Type K...Ch. 15 - An orifice meter is to be installed in a 12-in...Ch. 15 - A pitot-static tube is inserted into a pipe...Ch. 15 - A pitot-static tube is connected to a differential...Ch. 15 - A pitot-static tube is inserted in a pipe carrying...Ch. 15 - A pitot-static tube is inserted into a duct...Ch. 15 - A pitot-static tube is inserted into a duct...
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- A venturi meter has an inlet diameter of 65 mm and a throat diameter of 26 mm. When measuring the flow of a liquid of density 898 kg/m3 the reading of a mercury differential pressure gauge was 71 mm. Take the coefficient of the meter as 0.97 and the specific gravity of mercury as 13.6. Estimate the flow through the meter in m/h.arrow_forwardSheet 1 Page 1 of 2 Q1/ An orifice meter is to be calibrated for the measurement of the flow rate of a stream of liquid acetone. The differential manometer fluid has a specific gravity of 1.10. The calibration is accomplished by connecting the orifice meter in series with a rotameter that has previously been calibrated for acetone, adjusting a valve to set the flow rate, and recording the flow rate (determined from the rotameter reading and the rotameter calibration curve) and the differential manometer reading, h. The procedure is repeated for several valve settings to generate an orifice meter calibration curve of flow rate versus h. The following data are taken. VALVEX Flow Rate V (mL/s) Manometer Reading h(mm) 62 10 87 15 107 20 123 138 25 30 151 1- For each of the given readings, calculate the pressure drop across the orifice, AP (mm Hg). 2- The flowrate through an orifice should be related to the pressure drop across the orifice by the formula. D = KPn Verify graphically that the…arrow_forward9. A U-tube manometer is connected to a pipe for measuring the pressure of oil SG=0.92 flowing in the pipeline. Mercury (SG=13.6) is used as manometer liquid and the difference of mercury level in the two limbs is 160mm. The center of pipe is 80mm below the level of mercury in the right limb. Determine the pressure in the pipeline and the head. 80 mm 160 mmarrow_forward
- Show complete solution with diagram: A 3.81-cm diameter venturi meter is installed in a pipe with an internal diameter of 10.23 cm. A 127 cm manometer filled with mercury is used to measure the pressure difference across the venturi meter. If the manometer reads 101.6 cm when 15 °C water is flowing through the pipe, what is the flow rate of water (m3/min)? Assume that the venturi meter coefficient of discharge equals 0.98.arrow_forwardQ1/ An orifice meter is to be calibrated for the measurement of the flow rate of a stream of liquid acetone. The differential manometer fluid has a specific gravity of 1.10. The calibration is accomplished by connecting the orifice meter in series with a rotameter that has previously been calibrated for acetone, adjusting a valve to set the flow rate, and recording the flow rate (determined from the rotameter reading and the rotameter calibration curve) and the differential manometer reading, h. The procedure is repeated for several valve settings to generate an orifice meter calibration curve of flow rate versus h. The following data are taken. VALVEX Flow Rate V (mL/s) Manometer Reading h(mm) 62 10 87 15 107 20 123 25 138 30 151 1- For each of the given readings, calculate the pressure drop across the orifice, AP (mm Hg). 2- The flowrate through an orifice should be related to the pressure drop across the orifice by the formula. D = KP" Verify graphically that the given orifice…arrow_forwardQ1/ An orifice meter is to be calibrated for the measurement of the flow rate of a stream of liquid acetone. The differential manometer fluid has a specific gravity of 1.10. The calibration is accomplished by connecting the orifice meter in series with a rotameter that has previously been calibrated for acetone, adjusting a valve to set the flow rate, and recording the flow rate (determined from the rotameter reading and the rotameter calibration curve) and the differential manometer reading, h. The procedure is repeated for several valve settings to generate an orifice meter calibration curve of flow rate versus h. The following data are taken. VALVEX Flow Rate V (mL/s) Manometer Reading h(mm) 62 10 87 15 107 20 123 25 138 30 151 1- For each of the given readings, calculate the pressure drop across the orifice, AP (mm Hg). 2- The flowrate through an orifice should be related to the pressure drop across the orifice by the formula. V = KP" Verify graphically that the given orifice…arrow_forward
- 2. A calibration test of a 15 mm circular sharp-edged orifice in the end of a 50 mm pipe showed a discharge of 0.8 liter per second of water when the pressure head on the center line of the pipe just upstream from the orifice was 2.70 m. The diameter of the jet at the vena contracta was found to be 12 mm. Compute the three orifice coefficients. Compute each coefficient independently from the other coefficients.arrow_forwardApply Bernoulli equation in solving the problem: A 3.81-cm diameter venturi meter is installed in a pipe with an internal diameter of 10.23 cm. A 127 cm manometer filled with mercury is used to measure the pressure difference across the venturi meter. If the manometer reads 101.6 cm when 15 °C water is flowing through the pipe, what is the flow rate of water (m3/min)? Assume that the venturi meter coefficient of discharge equals 0.98.arrow_forwardAsk a Question Water flows through the 50 cm diameter pipe to which the static pressure gauge and mercury manometer (pitot tube) are connected. The specific gravity of mercury and water is 133.600 N / m3 and 9810 N / m3, respectively. Calculate the height difference on the manometer since the linear flow rate of the water in the pipe is 4.5 m / sec. (If it needs to be used, gravitational acceleration g = 9.8 m / s2)arrow_forward
- Question 5: The velocity of a fluid flowing in a pipe is to be measured by two different Pitot-type mercury manometers. Would you expect both manometers to predict the same velocity for flowing water? If not, which would be more accurate? Explain. What would your response be if air were flowing in the pipe instead of water? Flow 0 Flowarrow_forwardA venturi meter measures the flow of water in a 75mm diameter pipe.The difference of head between the throat and the entrance of the meter is measured by a U tube containing mercury,the mercury being in contact with the water.What should be the diameter of the throat of the meter inorder that the difference in level of the mercury be 250mm when the quantity of water flowing in the pipe is 620dm3/min.Assume the coefficient of discharge of the meter to be 0.97arrow_forward= constant Q16/ A pipe diameter of 400 mm carries water at a velocity of 25 m/s. The pressures at the points A and B are given as 29.43 N/cm² and 22.563 N/cm² respectively while the datum head at A and B are 28 m and 30 m. Find the loss of head between A and B. Z شكر الكائر 2B ADA=400 mm PA 29.43 N/cm #28 m ZA 28 Dg= 400 mm Pe = 22.563 N/cm ZB = 30 m DATUM LINEarrow_forward
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