The equation for finding friction factor for laminar flow in circular pipe is,
f = 64/Re
f - friction factor
Re - Reynolds number
From this equation, it is clear that f inversely proportional to Re
Option 2 is correct
Question 1 1 pts The friction factor of laminar liquid flow in a circular pipe is...
Question 1 a- The friction factor for laminar flow doesn’t depend on pipe roughness. .(True) (false) b- The friction factor for laminar flow can be directly calculated, but experiments are needed to find the friction factor for turbulent flow. . (True) (false) c- The head losses for an orifice meter and venture meter are about the same .(True) (false) d- Head loss can be expressed in dimensions of length . (True) (false) e Which of the following effects can be...
*21. Which of the following statements is not true about variation of friction factor, f, in a circular pipe? f is inversely proportional to Reynolds number, Re, in laminar flow b. a. fis independent of Re at very large Re. fis zero for laminar flow for perfectly smooth pipe surface c. fis proportional to the pressure loss d 22. A Newtonian fluid is contained in the annulus between two concentric cylinders. The inner cylinder is rotated while the outer cylinder...
For laminar flow through a circular pipe, the value of the kinetic energy correction factor for Bernoulli’s equation is α = 2. Show that this is true.
Question 2 -Laminar Flow A liquid (ρ = 1000 kg/m3; μ = 10-1 N . s/2 m: v-104 m2/s) flows uniformly with a mean velocity of 1.5 m/s in a pipe with a diameter of 100 mm. Show that the flow is laminar. Also, find the friction factor fand the head loss per meter of pipe length.
For pressure driven flow of a liquid in a circular pipe, give the correct relationship between maximum axial velocity and average axial velocity for both laminar and turbulent flow conditions.
In fully developed laminar flow in a circular pipe, the velocity at R/2 (midway between the wall surface and the centerline) is measured to be 91 m/s. Determine the velocity at the center of the pipe. The velocity at the center of the pipe m/s
Problem C. For laminar flow in a circular pipe, show that (a) average velocity equals Vmax/2; and (b) shear stress at the pipe wall, To, equals avgh
3 - (50 pts.) A fluid flow in a circular pipe is heated with a constant surface temperature. The pipe diameter is set to D (in m) and the length of the pipe to L -2.5m. The inlet temperature is 300 K and the inlet velocity is uniform. Use the following air properties: p=1 kg/m', u=2x10* Pa-s, k=0.03 W/m-K. The Reynolds number to Rep - 200 and the Prandt number to Pr=1.75. A section of the pipe is heated with...
2- (50 pts.) A fluid flow in a circular pipe is heated with a constant heat flux. The pipe diameter is set to D=0.2 m and the length of the pipe to L = 1.0 m. The inlet temperature is 300 K and the inlet velocity is uniform. Use the following air properties: p= 1 kg/m?, u=4x10-5 Pa-s, k=0.03 W/m-K. The Reynolds number is Rep and the Prandtl number to Pr=1. A section of the pipe is heated with a...
Problem 2 Find the velocity profile for steady, fully-developed, laminar flow in a circular pipe. Integrate this velocity profile to find the mass flowrate through a pipe of length L for a given pressure drop Ap.