The Hazen-Williams hydraulics formula for volume rateof flow Q through a pipe of diameter D and length L isgiven byQ - 61.9 D263Ap0.54where Ap is the pressure drop required to drive the flow.What are the dimensions of the constant 61.9? Can thisformula be used with confidence for various liquids andgases?

The expression that gives the Hazen-Willian hydraulic formula for a rate of flow through a pipe is,…

Answered: The Hazen-Williams hydraulics formula…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

In Prob. it would be difficult to solve for Ω because of itappears in all three of the dimensionless pump coefficients.Suppose that, in Prob. 5.61, Ω is unknown but D = 12 cmand Q = 25 m 3 /h. The fluid is gasoline at 20 ° C. Rescale thecoefficients, , to make a plot ofdimensionless power versus dimensionless rotation speed.Enter this plot to find the maximum rotation speed Ωforwhich the power will not exceed 300 W.
The head loss for a certain circular pipe is given by hL = 0.0826fL(V.2/D5), where f is the friction factor (dimensionless), L is the pipe length, V. is the volumetric flow rate, and D is the pipe diameter. Determine if the 0.0826 is a dimensional or dimensionless constant. Is this equation dimen sionally homogeneous as it stands?
An instrument popular in the water supply industry,sketched in Fig., is the single jet water meter.(a) How does it work? (b) What do you think a typicalcalibration curve would look like? (c) Can you cite furtherdetails, for example, reliability, head loss, cost ?
Water flows through a pipe 25 mm in diameter at avelocity of 6 m s−1. Determine whether the flow will be laminaror turbulent assuming that the dynamic viscosity of water is 1.30× 10 −3 kgm−1s−1 and its density 1000kgm−3 . If oil of specific gravity 0.9 and dynamic viscosity 9.6 ×10−2 kg m−1s−1is pumped through the same pipe, what type of flow will occur?
In some wind tunnels the test section is perforated to suckout fl uid and provide a thin viscous boundary layer. Thetest section wall in Fig. P3.33 contains 1200 holes of 5-mmdiameter each per square meter of wall area. The suctionvelocity through each hole is V s = 8 m/s, and the testsectionentrance velocity is V 1 = 35 m/s. Assuming incompressiblesteady fl ow of air at 20 8 C, compute ( a ) V 0 , ( b ) V 2 ,and ( c ) V f , in m/s.
The following data were obtained for the flow of 20°C water at20 m3/h through a badly corroded 5-cm-diameter pipe thatslopes downward at an angle of 8°: p1 = 420 kPa, z1 = 12 m,p2 = 250 kPa, z2 = 3 m. Estimate (a) the roughness ratio ofthe pipe and (b) the percentage change in a head loss if thepipe were smooth and the flow rate the same.
An engineer needs to monitor a flow of 20°C gasoline atabout 250 ±25 gal/min through a 4-in-diameter smoothpipe. She can use an orifice plate, a long-radius flow nozzle,or a venturi nozzle, all with 2-in-diameter throats. Theonly differential pressure gage available is accurate in therange of 6 to 10 lbf/in2. Disregarding flow losses, whichdevice is best?
Water at 20 ° C is delivered from one reservoir to anotherthrough a long 8-cm-diameter pipe. The lower reservoirhas a surface elevation z 2 =80 m. The friction loss in thepipe is correlated by the formula h loss ≈17.5( V 2 /2 g ), whereV is the average velocity in the pipe. If the steady fl ow ratethrough the pipe is 500 gallons per minute, estimate thesurface elevation of the higher reservoir.
Water exits a 1-cm diameter outlet of a faucet. Estimate the maximum speed that would result in a laminar flow if the water temperature is 50°C. Assume Re = 2000 a. 558 m b 6.15 m c7.71 m d 845 m
The 35 °C water fl ow of Fig. P3.135 discharges to sea-levelstandard atmosphere. Neglecting losses, for what nozzlediameter D will cavitation begin to occur? To avoidcavitation, should you increase or decrease D from thiscritical value?
Water at 20 °C flows through an inclined 8-cm-diameterpipe. At sections A and B the following data are taken:pA = 186 kPa, VA = 3.2 m/s, zA = 24.5 m, and pB = 260kPa, VB = 3.2 m/s, zB = 9.1 m. Which way is the flow going?What is the head loss in meters?
Find the air horsepower of an industrial fan that delivers 40m3/s of air through a 700mm x 1000mm duct if static pressure is 150mm of water gage and air density is 1.18kg/m3 Answer: 182.2

SEE MORE QUESTIONS

Recommended textbooks for you

Elements Of Electromagnetics

Mechanical Engineering

ISBN:

9780190698614

Author:

Sadiku, Matthew N. O.

Publisher:

Oxford University Press

Mechanics of Materials (10th Edition)

Mechanical Engineering

ISBN:

9780134319650

Author:

Russell C. Hibbeler

Publisher:

PEARSON

Thermodynamics: An Engineering Approach

Mechanical Engineering

ISBN:

9781259822674

Author:

Yunus A. Cengel Dr., Michael A. Boles

Publisher:

McGraw-Hill Education

Elements Of Electromagnetics

Mechanical Engineering

ISBN:

9780190698614

Author:

Sadiku, Matthew N. O.

Publisher:

Oxford University Press

Mechanics of Materials (10th Edition)

Mechanical Engineering

ISBN:

9780134319650

Author:

Russell C. Hibbeler

Publisher:

PEARSON

Thermodynamics: An Engineering Approach

Mechanical Engineering

ISBN:

9781259822674

Author:

Yunus A. Cengel Dr., Michael A. Boles

Publisher:

McGraw-Hill Education

Control Systems Engineering

Mechanical Engineering

ISBN:

9781118170519

Author:

Norman S. Nise

Publisher:

WILEY

Mechanics of Materials (MindTap Course List)

Mechanical Engineering

ISBN:

9781337093347

Author:

Barry J. Goodno, James M. Gere

Publisher:

Cengage Learning

Engineering Mechanics: Statics

Mechanical Engineering

ISBN:

9781118807330

Author:

James L. Meriam, L. G. Kraige, J. N. Bolton

Publisher:

WILEY

SEE MORE TEXTBOOKS