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A water pump can generate a pressure diference ΔP (psi) given by ΔP=145-0.1Q2, Q is the flow rate in ft3/s. It suplies a pipe of diameter 20", roughness of .5 inches and length of 2500 ft.
What is the flow rate, pressure difference and power supplied to the 70% efficient pump. If the pipe was replaced with one of roughness .25 inches, how much would the flow increase and what would be the power required?
Properties: μ (dynamic viscosity) = 2.10x10-5 lb-s/ft2 δ (density) = 1.94 slug/ft3
How many 3:4-inch diameter rivets are required to transmit 55,000 lb from the two angles to the gusset plate if the allowable shear stress in the rivets is 15,000 psi Assume each rivet carries the same amount of load.
The medium contains a wetting phase in equal proportions. Calculate the numerical value of the Leverett J- function for this idealized porous medium. Assume the wall thickness of the capillary tube to be negligible small.
A 58.3 degree inclined plan has a spring with spring constant 23,400 N/m attached at the bottom.A 1.2 kg block is placed on the plane and compresses the spring a distance of 2.4 cm from equilibrium.
Using the aluminum alloy 2014-T6, determine the largest allowable length of the aluminum bar AB for a centric load P of magnitude (A) 150 kN b=50 mm h=20 mm
Axis of the hole is perpendicular to VP. Draw elevation, plan and development of the lateral surfaces of the pyramid.
The average rate of water consumption from this tank is 6.25 kL per day, every day. The farmer refills the tank (overnight) every 14 days, using a pump that takes water from a nearby river. The top of the tank is 53m (vertically) above the level o..
(1) a constant wind velocity that is twice the mean wind velocity and operating half the time; and (2) a constant wind velocity that is three times the mean wind velocity operating one-third of the time.
The ½ inch pipe was found to have an average friction factor of 0.0129 and the ¾ pipe had an average friction factor of 0.0209. The length of the pipes between the two manometer connections are 60 inches each.
If the allowable shear stress is 100 MPa, calculate the maximum shear force V that a W460 X 60 structural steel wide flange is capable of resisting. Use the average web shear approach.
A fluid flows into a plug flow reactor of volume, V, with volumetric flow rate, Q. Inflow contains species A and B and concentrations A0 and B0. Within reactor, species A undergoes first order reaction producing B... R=k[A].
design a concrete (n = 0.013) channel that will convey 50,000 GPM. It is to be a trapezoidal in cross section with a bottom width of 7.5 feet. The side slopes are to be 1.33:1 (H:V) and it is desired to have the depth of flow constant at 2.0 feet.
A total of 500 mm of rain fell on a 75 ha watershed in a 10 hour period. Compute the average rainfall intensity and the total volume of rain that fell on the watershed.
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