The traditional "Moody-type" pipe friction correlation inChap. 6 is of the form2APDf =pVL(pVDи "D,where D is the pipe diameter, L the pipe length, and e thewall roughness. Note that pipe average velocity V is usedon both sides. This form is meant to find Ap when V isknown. (a) Suppose that Ap is known, and we wish to findV. Rearrange the above function so that V is isolated on theleft-hand side. Use the following data, for e/D = 0.005, tomake a plot of your new function, with your velocityparameter as the ordinate of the plot.0.0356 | 0.0316 | 0.0308pVD/u | 15,000 | 75,000 | 250,000 | 900,000 | 3,330,0000.03050.0304(b) Use your plot to determine V, in m/s, for the followingpipe flow: D = 5 cm, e = 0.025 cm, L = 10 m, for waterflow at 20°C and 1 atm. The pressure drop Ap is 110 kPa.

Answered: The traditional "Moody-type" pipe…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

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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.
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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 ?
(Combine Rankine Cycle) Show the details of your solutions with TS Diagrams with correct dimension analysis
Suppose that it is desired to estimate volume fl ow Q in apipe by measuring the axial velocity u ( r ) at specifi c points.For cost reasons only three measuring points are to be used.What are the best radii selections for these three points?
An incompressible fluid flows in a linear porous medium with the following properties: Lenth = 3000 ft k = 100 md p1 = 2000 psig p2 = 1980 psig height = 25 ft porosity = 20% width = 300 ft viscosity = 2 cP Assume the dimension is slanted, i.e., a dip angle of 5 degrees (downward from p1 location to p2 location), what is the apparent fluid velocity under this new boundary condition?
In the flow of air at 20°C and 1 atm past a flat plate inFig. , the wall shear is to be determined at position x bya floating element (a small area connected to a strain-gageforce measurement). At x = 2 m, the element indicates ashear stress of 2.1 Pa. Assuming turbulent flow from the leadingedge, estimate (a) the stream velocity U, (b) the boundarylayer thickness δ at the element, and (c) the boundary layervelocity u, in m/s, at 5 mm above the element.
The open tank in Fig. contains water at 20 ° C and isbeing filled through section 1. Assume incompressibleflow. First derive an analytic expression for the water-levelchange dh / dt in terms of arbitrary volume flows ( Q 1 , Q 2 ,Q 3 ) and tank diameter d . Then, if the water level h is constant,determine the exit velocity V 2 for the given data V 1 =3 m/s and Q 3 = 0.01 m 3 /s.
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Unless stated otherwise take:Patm = 10^5, P(water) = 1000 kg/m^3 ; P(air) = 1.2 kg/m^3 ; g = 9.8m/s^2gage pressure Pg = P - PatmUnless specified otherwise assume uniform velocity profiles in duct locations.The Bernoulli eq’n (BE), P + ½ρV2 + ρgz = constant In this formulation the scalar variable z is the vertical height measured opposite the direction of g (z is always taken up independent of your coordinate system; pgz is potential energy)This BE is only valid along a streamline in steady state flow, when viscous friction effects can be ignored, called “ideal” fluid motion, and the density is assumed to be constantthe differential radial component of –?P + ρg = ρawith the centripetal acceleration , ar = - V^2/r , to get dp/dr = ρgr + ρV^2/rThe Bernoulli eq’n is often divided through by the constant ρg ≡ γ so that each term has units of length, a height or “head” : (P/ ρg) + (V2/2g) + (z) = constant. Q = VA = flow rate = constant, as a second eq’n to solve for an unknown velocity. the…
We are given laboratory data, taken by Prof. Robert Kirchhoffand his students at the University of Massachusetts, for thespin rate of a 2-cup anemometer. The anemometer wasmade of ping-pong balls ( d = 1.5 in) split in half, facing inopposite directions, and glued to thin ( 1/4-in) rods pegged toa center axle. There were fourrods, of lengths l = 0.212, 0.322, 0.458, and 0.574 ft. Theexperimental data, for wind tunnel velocity U and rotationrate Ω , are as follows: Assume that the angular velocity Ω of the device is afunction of wind speed U , air density ρ and viscosity μ , rodlength l , and cup diameter d . For all data, assume air is at1 atm and 20 ° C. Defi ne appropriate pi groups for thisthe problem, and plot the data in this dimensionless manner.Comment on the possible uncertainty of the results.As a design application, suppose we are to use thisanemometer geometry for a large-scale ( d = 30 cm) airportwind anemometer. If wind speeds vary up to 25 m/s and wedesire an average…

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