Lecture_17_notes - Turbulence examples 2 Chemical...

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Unformatted text preview: Turbulence examples 2 Chemical Engineering 374 Fluid Mechanics Fall 2011 Turbulent Pipe Flows Big whorls have little whorls That feed on their velocity And little whorls have lesser whorls And so on to viscosity --Lewis Richardson I am an old man now, and when I die and go to heaven there are two matters on which I hope for enlightenment. One is quantum electrodynamics, and the other is the Turbulent motion of fluids. About the former I am rather optimistic. --Attr. to Horace Lamb 1 Turbulent Mixing Layer Flow 3 Channel Flow Simulations 4 Flow 1 Channel Flow Simulation Wall 5 Instantaneous and Mean Velocity (m/s) 10 15 20 20 20 20 0 0 W 0.5 1 1.5 ODT line position x (m) V V V V Flow Direction 5 5 5 5 6 a ye 20 III. L og r Lay Wall ODT DNS ffer L er 25 lay II. B u 5 0 0 10 I. V isco Flow us 10 10 1 y+ 10 2 IV. Ou te 15 U+ Su b r La er yer U 10 3 Wall Moody Chart 7 Wall Wall Wall Wall 2 Shape of Regions I and III from dimensional analysis! 2 ...
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This note was uploaded on 03/11/2012 for the course CHE 374 taught by Professor Davidlignell during the Fall '12 term at Brigham Young University, Hawaii.

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Lecture_17_notes - Turbulence examples 2 Chemical...

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