Centrifugal Pumps: Understanding Cavitation

Chemical and Process Engineering Resources

Nov 08 2010 01:30 PM | Mukesh Sahdev in Fluid Flow

References

" New Monitoring Systems Warns of Cavitation and Low Flow Instabilities", Pumps and Systems Magazine, April 1996, Robert A. Atkins, Chung E.Lee, Henry F.Taylor
"Understanding Pump Cavitation", Chemical Processing, Feb 1997, W.E. Nelson
"Centrifugal pumps operation at off-design conditions", Chemical Processing April, May, June 1987, Igor J. Karassik
"Understanding NPSH for Pumps", Technical Publishing Co. 1975, Travis F. Glover
"Centrifugal Pumps for General Refinery Services", Refining Department, API Standard 610, 6th Edition, January 1981
"Controlling Centrifugal Pumps", Hydrocarbon Processing, July 1995, Walter Driedger
"Don't Run Centrifugal Pumps Off The Right Side of the Curve", Mike Sondalini
"Pump Handbook", Third Edition, Igor j. Karassik, Joseph P.Messina, Paul cooper Charles C.Heald
"Centrifugal Pumps and System Hydraulics", Chemical Engineering, October 4, 1982, pp. 84-106. , Karassik, I.J.,
Unit Operations of Chemical Engineering (5th Edition), McGraw-Hill, 1993, pp. 188-204. , McCabe, W.L., J.C. Smith, and P. Harriott,
"CAVISMONITOR: Cavitation Monitoring In Hydraulic Machines With Aid Of A Computer Aided Visualization Method", Bernd Bachert, Henrik Lohrberg, Bernd Stoffel Laboratory for Turbomachinery and Fluid Power Darmstadt University of Technology Magdalenenstrasse 4, 64289 Darmstadt, Germany
"The Hydraulic Pump Inlet Condition: Impact on Hydraulic Pump Cavitation Potential", G.E. Totten and R.J. Bishop, Jr.Union Carbide Corporation Tarrytown, NY
"Study of Cavitation Collapse Pressure and Erosion, Part I: A Method for Measurement of Collapse Pressure", Wear, 1989, Vol. 133, p.219-232, T. Okada, Y. Iwai and K. Awazu,
"Key Centrifugal Pump Parameters and How They Impact Your Applications" Part 1 Pumps and Systems: They Go Together, Doug Kriebel, PE, Kriebel Engineered Equipment
"How to compute Net Positive Suction Head for centrifugal pumps". J. J. Paugh, P.E.Vice President, Engineering, Warren Pumps Inc.
"New Monitoring System Warns of Cavitation and Low-Flow Instabilities", APRIL 1996 PUMPS AND SYSTEMS MAGAZINE, Robert A. Atkins, Chung E. lee and Henry F. Taylor
"Detecting Cavitation in Centrifugal Pumps", Experimental Results of the Pump Laboratory, Jeremy Jensen Project Engineer, Bentley Rotor Dynamics Research Corporation

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12 Comments

naive.engr

Dec 11 2011 02:20 PM

Excellent article. Thank you

mfai

Jan 26 2012 05:57 AM

Great article. This will increase my understandings about cavitation.

Novski

Mar 09 2012 09:10 PM

Thank very much.

Wajahat Hussain

Mar 19 2012 01:27 PM

we have studied this 2day very nice.........

smundra

Oct 26 2012 02:14 PM

Great article although I wanted to point out even wneh general guidelines are followed one may still experience uneven flow distribution in to the pump. A pump requires a well developed, uniform flow pattern at a narrow flow rate range since the impeller inlet eye and vanes are optimized to not create turbulence at design flow. This pump design feature is very susceptible to non-uniform inlet flow because when liquid velocity varies and does not meet the pump design assumption of a uniform velocity striking the impeller eye, flow separation results which causes cavitation and associated problems. I think there should be more empahsis and discussion on technologies to improve traditional piping and pumping rules (lack of space, erosion, impeller wear, pump failure). Please take a look at cheng rotation vane, impeller coating, need solutions.

AFRAZ

Dec 06 2012 10:55 AM

nice

conceptvendor

Feb 01 2013 06:20 PM

Great article but in your classification of pump problems, you have left out the most important class., i.e. problems in getting required parameters because of system conditions.Design Problems is of little use to the site engineer as he can't do anything about it. He can definitely correct system problems however.