FLUID MECHANICS FUNDAMENTALS+APPS
4th Edition
ISBN: 2810022150991
Author: CENGEL
Publisher: MCG
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Chapter 14, Problem 116CP
To determine
The kind of device a water meter.
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Step 1: Known, UnknownStep 2: SchematicStep 3: FormulaStep 4: CalculationsStep 5: Discussion
A 30 cm diameter pipe, conveying water, branches into two pipes of diameters20 cm and 15 cmrespectively. If the average velocity in the 30 cm diameter pipe is 2.5 m/s, find the discharge inthis pipe (m3/s). Also determine the velocity (m/s) in 15 cm pipe if the average velocity in 20cm diameter pipe is 2 m/s.
Which quantities are added when two pumps are connected in series and parallel? (a) Series: Pressure change. Parallel: Net head (b) Series: Net head. Parallel: Pressure change (c) Series: Net head. Parallel: Flow rate (d) Series: Flow rate. Parallel: Net head (e) Series: Flow rate. Parallel: Pressure change
To find :
Pumps and fluids transport system. Definition and three (3) examples of the following:
1. Pumps and its types
2. Pipelines
3. Tanks
Chapter 14 Solutions
FLUID MECHANICS FUNDAMENTALS+APPS
Ch. 14 - What is the more common term for an...Ch. 14 - What the primary differences between fans,...Ch. 14 - List at least two common examples of fans, of...Ch. 14 - Discuss the primary difference between a porn...Ch. 14 - Explain why there is an “extra” term in the...Ch. 14 - For a turbine, discuss the difference between...Ch. 14 - Prob. 7CPCh. 14 - Prob. 8PCh. 14 - Prob. 9PCh. 14 - Prob. 10CP
Ch. 14 - There are three main categories of dynamic pumps....Ch. 14 - For each statement about cow cetrifugal the...Ch. 14 - Prob. 13CPCh. 14 - Consider flow through a water pump. For each...Ch. 14 - Write the equation that defines actual (available)...Ch. 14 - Consider a typical centrifugal liquid pump. For...Ch. 14 - Prob. 17CPCh. 14 - Consider steady, incompressible flow through two...Ch. 14 - Prob. 19CPCh. 14 - Prob. 20PCh. 14 - Suppose the pump of Fig. P1 4-19C is situated...Ch. 14 - Prob. 22PCh. 14 - Prob. 23EPCh. 14 - Consider the flow system sketched in Fig. PI 4-24....Ch. 14 - Prob. 25PCh. 14 - Repeat Prob. 14-25, but with a rough pipe-pipe...Ch. 14 - Consider the piping system of Fig. P14—24. with...Ch. 14 - The performance data for a centrifugal water pump...Ch. 14 - For the centrifugal water pump of Prob. 14-29,...Ch. 14 - Suppose the pump of Probs. 14-29 and 14-30 is used...Ch. 14 - Suppose you are looking into purchasing a water...Ch. 14 - The performance data of a water pump follow the...Ch. 14 - For the application at hand, the flow rate of...Ch. 14 - A water pump is used to pump water from one large...Ch. 14 - For the pump and piping system of Prob. 14-35E,...Ch. 14 - A water pump is used to pump water from one large...Ch. 14 - Suppose that the free surface of the inlet...Ch. 14 - Calculate the volume flow rate between the...Ch. 14 - Comparing the results of Probs. 14-39 and 14-43,...Ch. 14 - Prob. 45PCh. 14 - The performance data for a centrifugal water pump...Ch. 14 - Transform each column of the pump performance data...Ch. 14 - 14-51 A local ventilation system (a hood and duct...Ch. 14 - Prob. 52PCh. 14 - Repeat Prob. 14-51, ignoring all minor losses. How...Ch. 14 - Suppose the one- way of Fig. P14-51 malfunctions...Ch. 14 - A local ventilation system (a hood and duct...Ch. 14 - For the duct system and fan of Prob. 14-55E,...Ch. 14 - Repeat Prob. 14-55E, ignoring all minor losses....Ch. 14 - A self-priming centrifugal pump is used to pump...Ch. 14 - Repeat Prob. 14-60. but at a water temperature of...Ch. 14 - Repeat Prob. 14-60, but with the pipe diameter...Ch. 14 - Prob. 63EPCh. 14 - Prob. 64EPCh. 14 - Prob. 66PCh. 14 - Prob. 67PCh. 14 - Prob. 68PCh. 14 - Prob. 69PCh. 14 - Two water pumps are arranged in Series. The...Ch. 14 - The same two water pumps of Prob. 14-70 are...Ch. 14 - Prob. 72CPCh. 14 - Name and briefly describe the differences between...Ch. 14 - Discuss the meaning of reverse swirl in reaction...Ch. 14 - Prob. 75CPCh. 14 - Prob. 76CPCh. 14 - Prob. 77PCh. 14 - Prob. 78PCh. 14 - Prob. 79PCh. 14 - Prob. 80PCh. 14 - Wind ( =1.204kg/m3 ) blows through a HAWT wind...Ch. 14 - Prob. 82PCh. 14 - Prob. 84CPCh. 14 - A Francis radial-flow hydroturbine has the...Ch. 14 - Prob. 87PCh. 14 - Prob. 88PCh. 14 - Prob. 89PCh. 14 - Prob. 90CPCh. 14 - Prob. 91CPCh. 14 - Discuss which dimensionless pump performance...Ch. 14 - Prob. 93CPCh. 14 - Prob. 94PCh. 14 - Prob. 95PCh. 14 - Prob. 96PCh. 14 - Prob. 97PCh. 14 - Prob. 98PCh. 14 - Prob. 99PCh. 14 - Prob. 100EPCh. 14 - Prob. 101PCh. 14 - Calculate the pump specific speed of the pump of...Ch. 14 - Prob. 103PCh. 14 - Prob. 104PCh. 14 - Prob. 105PCh. 14 - Prob. 106PCh. 14 - Prob. 107EPCh. 14 - Prob. 108PCh. 14 - Prob. 109PCh. 14 - Prob. 110PCh. 14 - Prove that the model turbine (Prob. 14-109) and...Ch. 14 - Prob. 112PCh. 14 - Prob. 113PCh. 14 - Prob. 114PCh. 14 - Prob. 115CPCh. 14 - Prob. 116CPCh. 14 - Prob. 117CPCh. 14 - Prob. 118PCh. 14 - For two dynamically similar pumps, manipulate the...Ch. 14 - Prob. 120PCh. 14 - Prob. 121PCh. 14 - Prob. 122PCh. 14 - Calculate and compare the turbine specific speed...Ch. 14 - Prob. 124PCh. 14 - Prob. 125PCh. 14 - Prob. 126PCh. 14 - Prob. 127PCh. 14 - Prob. 128PCh. 14 - Prob. 129PCh. 14 - Prob. 130PCh. 14 - Prob. 131PCh. 14 - Prob. 132PCh. 14 - Prob. 133PCh. 14 - Prob. 134PCh. 14 - Prob. 135PCh. 14 - A two-lobe rotary positive-displacement pump moves...Ch. 14 - Prob. 137PCh. 14 - Prob. 138PCh. 14 - Prob. 139PCh. 14 - Prob. 140PCh. 14 - Which choice is correct for the comparison of the...Ch. 14 - Prob. 142PCh. 14 - In a hydroelectric power plant, water flows...Ch. 14 - Prob. 144PCh. 14 - Prob. 145PCh. 14 - Prob. 146PCh. 14 - Prob. 147PCh. 14 - Prob. 148PCh. 14 - Prob. 149PCh. 14 - Prob. 150PCh. 14 - Prob. 151P
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- An aqueduct is required to supply water to the community.Data: Families = 12 Average members per family = 3 people Breakfast, lunch and dinner = 15 total liters / family Showers = 10lt / person, one daily shower Kitchen wash = 13lts / day Total distance of the pipeline to the storage tank = 1200 meters Total height H from the pump point to delivery to the tank = 70 meters Determine: Estimation of the total volume of the recommended tank, an autonomy of at leas 2 days of storage. It is required to propose a pump that allows at least filling the tank between 5 to 12 hours operation, it must include details of the pump, as well as its curve Image: schematic detail of the proposed systemarrow_forward7.1 MHIS the total head at inlet and h is the head lost 7.5 Water f due to friction, efficiency of power transmission through a straight pipe is given by diamet below. H-h (a) H (b) H+h V H-h (c) H+h (d) H-h The co [ESE : 1995] decrea (a) 3, 7.2 Water hammer in pipelines takes place when (a) fluid is flowing with high velocity (b) fluid is flowing with high pressure (c) flowing fluid is suddenly brought to rest by closing a valve (d) flowing fluid is brought to rest by gradually closing a valve (c) 1, 7.6 During throus TO JESE : 1995] 12 7.3 Assertion (A): There will be a redistribution of pressure and velocity from inside of the bend to the outside while a fluid flows through a pipe measu (a) th in (b) th- (c) the (d) th bend. Reason (R): The spacing between stream lines will increase towards the outside wall and decrease towards the inside wall to inside of the bend. (a) Both A and R are individually true andR is the correct explanation of A (b) Both A and R are individually true but…arrow_forwardPump specific speed and turbine specific speed are “extra” parameters that are not necessary in the scaling laws for pumps and turbines. Explain, then, their purpose.arrow_forward
- B-A pump has the following parameters N=2133.5 RPM, Ns = 40 RPM, D= 37.1 cm and is used to pump water up to 90 m(H) at maximum efficiency operation: write the answer only (a) At what speed should the pump be operated to pump water up to (76 m)? (b) What is the discharge in each case? (c) What is pumping power needed in each case? (d) What is consumed electrical power in each case if max = 90%? e- A pump discharges liquid at the rate of Q against a head of H. If specific weight of the liquid is w, find the expression for the pumping power.arrow_forwardFor the following pump-pipe system below, how will the discharge and pump head change if a smaller pump in the same family is used to replace the current pump? Increase or decrease? EB EA Head (ft) 350 300 250 225 200 150 100 50 0 0 5 10 O Pump head will decrease; discharge will decrease. O Pump head will increase; discharge will increase. O Pump head will increase; discharge will increase. O Pump head will decrease; discharge will increase. 15 20 Discharge (cfs) System head curve 25 H₂ -Intersection point Pump characteristics 30 35 40arrow_forwardThe head-discharge relationship for a certain pump can be represented by the equation H-29-6Q^2 The pump is fixed 2 m shove the water surface tank at a level 10 m above the pump. The suction and delivery pipes are 12 m and 720 m long, respectively and each pipe is 0.5 m in diameter. The Estimate the discharge (in m³/s) at the best operating point for the pumping system,arrow_forward
- An oil refinery uses a Venturi tube to measure the flow rate of gasoline. The density of the gasoline isp = 7.10 x 102 kg/m³, the inlet and outlet tubes, respectively, have a radius of 2.36 cm and 1.18 cm, and the difference in input and output pressure is P, - P, = 1.20 kPa. P1 P2 (a) Find the speed (in m/s) of the gasoline as it leaves the hose. m/s (b) Find the fluid flow rate in cubic meters per second. m/sarrow_forward4) Compare the graphs for pumps in series and pumps in parallel, and describe the similarities and differences. Total Head (m) 16 14 12 10 00 10 4 2 0 Comparison of Series and Parallel Pumps 0.5 1 1.5 Discharge, Q (L/s) Pumps in Series Pumps in Parallel 2.5 3arrow_forwardA single pump and system have characteristics as shown on the graph below. Based on this information, estimate: (a) The flow rate with one pump online. (b) The flow rate if the pump's speed is doubled (c) The flow rate of two identical pumps operating in parallel (original pump speeds) (d) The flow rate of two identical pumps operating in series (original pump speed) (e) The flow rate if the system's static head doubles (f) Pump head (original system) if a valve is opened until the flow rate is 5.5 cfs 350 300 250 200 150 100 50 2 4 6. 8 10 12 Flow Rate (cfs) ·hp(req) •hp(avai) Head (ft)arrow_forward
- The air flow through a four-cylinder, four-stroke gasoline engine was measured by means of a 7.5-cm diameter accurate flow-measuring device with its discharge coefficient of 0.66. During a Power Plants laboratory trial on this engine the following data were noted down as follows: Bore (d) Stroke (Ls) Shaft speed (N.) Mass flow rate of fuel used (m,) Brake power (W,) = 110 = 12 = 180000 rev/h 166.67 g/min mm ст = 40 kW MJ/kg kJ/kg Higher calorific value (HCV) Heat carried away by water vapours in the exhaust (qsteam) Pressure drop across the measuring device (Ahw), by a water manometer Atmospheric pressure (P.) Atmospheric temperature (ta) 44 2000 cmH2O bar °C 1.01 = 23 Determine: (a) the brake thermal efficiency (7, th), (b) the brake mean effective pressure (P m), and (c) the volumetric efficiency (nvol.e air cond) based on free air conditions. For air: Ra = 0.287 kJ/(kg-K) and the mass density if water, P =987kg/m³ and the local accel- eration due to gravity, g = 9.79 m/s². 4.arrow_forwardFor each statement, choose whether the statement is true or false, and discuss your answer briefly: (a) A gear pump is a type of positive-displacement pump. (b) A rotary pump is a type of positive-displacement pump. (c) The pump performance curve (net head versus capacity) of a positive-displacement pump is nearly vertical throughout its recommended operating range at a given rotational speed. (d) At a given rotational speed, the net head of a positivedisplacement pump decreases with fluid viscosity.arrow_forwardIn a chemistry plant, through a horizontal smooth pipeline with a diameter of 0,3 m, a fluid with density and viscosity of 769 kg/m3 and 0,0007 Pa-s, respectively is flowing with a flow rate of 0,009 m3/s. Disregarding the pipe entrance effects and treating flow being steady, uniform and incompressible; a) Find the magnitude of mean velocity (in m/s). (Please use only 3 decimal digits.) b) Find Reynolds number. (Please do not use any decimal digit.) c) Find the magnitude of friction factor. (Please use 4 decimal digits.)arrow_forward
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Fluid Mechanics - Viscosity and Shear Strain Rate in 9 Minutes!; Author: Less Boring Lectures;https://www.youtube.com/watch?v=_0aaRDAdPTY;License: Standard youtube license