- Email: [email protected]
Liquid-solid flows and erosion wear in industrial equipment
EI-Sherbiny and Salem - surface roughness and friction in sliding the Inst. Mech. Engs., Swansea, April 19 78, paper C46/78, 155 4. Hailing J. A contribution to the theory of friction and wear and the relationship between them. Proc. Inst. Mech. Engs., 1976, 190, 477
5. Hisakado T. The influence of surface roughness on abrasive wear. Wear, 1976, 40, 179
6. Myers N. Wear. 1962, 5(3), 182 7. EI-Sherbiny M. and Salem F. Initial wear rates of soft metallic films. Wear, 1979, 54, 79 8. EI-Sherbiny M., Hailing J. and Teer G. The effect of pvd coatings on surface roughness. Proc. Int. Conf. on Advances in Surface Coating Technology, WeMingInst., London, Feb 1978, 147
Liquid-Solid Flows and Erosion Wear in Industrial Equipment
Contents
Two-phase flow Soo S.L. Development of theories on liquid-
E d i t e d b y 114.C. R o c o This is a collection o f camera-ready papers presented at the Energy Sources Technology Conference, New Orleans, in February 1984. The nineteen papers were delivered in three main sessions, namely two-phase flow, erosion and applications. The papers are mostly concerned with the flow o f wet slurries, particularly in coal transportation, and the problems o f wear o f pipelines and associated equipment such as pumps. Because o f the complexity o f two-phase flow, much o f the research presented here uses quite sophisticated mathematical modelling, not only for describing and predicting steady state flow, but also various instabilities and turbulence that may occur. The aim o f most o f the work seems to have been to gain basic understanding, for example to study the velocity characteristics o f dense slurries, Yianneskis and Whitelaw (Mechanical Engineering Dept., Imperial College, London, England) suspended particles in a fluid o f very similar refractive index so that laser doppler velocimetry could be used to probe the flow. The collection o f papers on mathematical modelling is a useful summary o f research in this complex area. There are contributions from several groups in the USA, the UK and West Germany. One paper that would be o f interest to the wider erosion community is that by Rao and Buckley (NASA, Cleveland, USA). They investigated the correlations that have been proposed between Published by the American Society of Mechanical Engineers, United Engineering Center, 345 East 47th Street, New York, NY 10017, priced $30.00 (members, $15.00). ASME book 100169 (FED vol 13)
TR I BO LOGY international
erosive wear and various material properties and ranked them as to how good they were. The paper by Roco et al (University o f Kentucky and the GIW Hydraulic Laboratory, Georgia, USA) describes a comprehensive study o f erosion b y concentrated slurries in turbulent flow. It describes erosion mechanisms, test equipment, modelling and applications. Other papers in the erosion section describe the wear of pumps and pipelines (Wiedenroth, University o f Paderdorn, West Germany) and tests on specific materials using a centrifugal apparatus (Tuzson et al, Allis-Chalmeri Corp., Wisconsin, USA). A potentially interesting paper on the erosion o f steel by water-based slurries (Sargent et al, University of Notre Dame, Indiana and Institute for Mining, Lexington, USA) regrettably only appears in abstract form. For readers interested in erosion in more general terms, useful references are the b o o k edited by C.M. Preece in 1979 (Treatise on Materials Science and Technology, Vol 16, 'Erosion', New York, Academic) and the Proceedings o f the 6th Int. Conf. on Erosion by Liquid and Solid Impact, edited by J.E. Field and N.S. Corney, 1983, University o f Cambridge. In summary, this present volume would mainly be o f interest to research workers in the pipeline industry. Its main strength is as a valuable source of reference for recent research (predominantly, USA) on the modelling o f twophase flows and slurry erosion.
Dr J.E. Field Dr S.M. Walley Cavendish Laboratory, Cambridge, UK
solid flows Abbas M.M. and Crowe C.T. Modelling the flow of solid-liquid mixtures through venturimeters Yianneskis M. and Whitelaw J.H. Velocity characteristics of pipe and jet flows with high particle concentration Crowder III R.S., Daily J.W. and Humphrey J.A.C. Numerical calculation of particle dispersion in a turbulent mixing layer flow Chung T.J. Two-phase flow instability of fluid-particle mixtures Michaelides E.E. and Farmer L.K. A model for slurry flows based on the equations of turbulence Keska J.K. Fluctuations of the solid spatial concentration in the stationary two-phase turbulent flow of heterogeneous mixtures in pipelines
Erosion Veerabhadra Rao P. and Buckley D.H. Solid
impingement erosion mechanisms and characterization of erosion resistance of ductile materials Shook C.A., Ghosh S.K. and Pilling F.E. Wall erosion in slurry couette flow Roco M.C., Addie G.R., Nair P. and
Dennis J. Erosion by concentrated slurries in turbulent flow Wiedenroth W. An experimental study of wear of centrifugal pumps and pipeline components Tuzson J.J,, Lee J and Schiebe-Powell K.A. Slurry erosion tests with centrifugal erosion tester Sargent G.A., Spencer D.K. and Sagues A.A. Erosion of steel by water based slurries
Applications Derammelaere R.H. and Wasp E.J. Mechanical dewatering, thermal drying and dust collection: an integrated approach Alexander D.W. and Shaw R.L. Coarse coal slurry transport at Loveridge mine Segev A. and Golan L.P. Analysis of flushing injection performance in a reciprocating plunger slurry pump Wilson K.C. Analysis of contact-load distribution and application to deposit limit in horizontal pipes Ponce-Campos C.D. and Wall D.G. A model for the calculation of hold-up in turbulent solid-liquid flow Yucel O. Simplified optimum-cost design of a slurry pipeline along a given route
227
5. Hisakado T. The influence of surface roughness on abrasive wear. Wear, 1976, 40, 179
6. Myers N. Wear. 1962, 5(3), 182 7. EI-Sherbiny M. and Salem F. Initial wear rates of soft metallic films. Wear, 1979, 54, 79 8. EI-Sherbiny M., Hailing J. and Teer G. The effect of pvd coatings on surface roughness. Proc. Int. Conf. on Advances in Surface Coating Technology, WeMingInst., London, Feb 1978, 147
Liquid-Solid Flows and Erosion Wear in Industrial Equipment
Contents
Two-phase flow Soo S.L. Development of theories on liquid-
E d i t e d b y 114.C. R o c o This is a collection o f camera-ready papers presented at the Energy Sources Technology Conference, New Orleans, in February 1984. The nineteen papers were delivered in three main sessions, namely two-phase flow, erosion and applications. The papers are mostly concerned with the flow o f wet slurries, particularly in coal transportation, and the problems o f wear o f pipelines and associated equipment such as pumps. Because o f the complexity o f two-phase flow, much o f the research presented here uses quite sophisticated mathematical modelling, not only for describing and predicting steady state flow, but also various instabilities and turbulence that may occur. The aim o f most o f the work seems to have been to gain basic understanding, for example to study the velocity characteristics o f dense slurries, Yianneskis and Whitelaw (Mechanical Engineering Dept., Imperial College, London, England) suspended particles in a fluid o f very similar refractive index so that laser doppler velocimetry could be used to probe the flow. The collection o f papers on mathematical modelling is a useful summary o f research in this complex area. There are contributions from several groups in the USA, the UK and West Germany. One paper that would be o f interest to the wider erosion community is that by Rao and Buckley (NASA, Cleveland, USA). They investigated the correlations that have been proposed between Published by the American Society of Mechanical Engineers, United Engineering Center, 345 East 47th Street, New York, NY 10017, priced $30.00 (members, $15.00). ASME book 100169 (FED vol 13)
TR I BO LOGY international
erosive wear and various material properties and ranked them as to how good they were. The paper by Roco et al (University o f Kentucky and the GIW Hydraulic Laboratory, Georgia, USA) describes a comprehensive study o f erosion b y concentrated slurries in turbulent flow. It describes erosion mechanisms, test equipment, modelling and applications. Other papers in the erosion section describe the wear of pumps and pipelines (Wiedenroth, University o f Paderdorn, West Germany) and tests on specific materials using a centrifugal apparatus (Tuzson et al, Allis-Chalmeri Corp., Wisconsin, USA). A potentially interesting paper on the erosion o f steel by water-based slurries (Sargent et al, University of Notre Dame, Indiana and Institute for Mining, Lexington, USA) regrettably only appears in abstract form. For readers interested in erosion in more general terms, useful references are the b o o k edited by C.M. Preece in 1979 (Treatise on Materials Science and Technology, Vol 16, 'Erosion', New York, Academic) and the Proceedings o f the 6th Int. Conf. on Erosion by Liquid and Solid Impact, edited by J.E. Field and N.S. Corney, 1983, University o f Cambridge. In summary, this present volume would mainly be o f interest to research workers in the pipeline industry. Its main strength is as a valuable source of reference for recent research (predominantly, USA) on the modelling o f twophase flows and slurry erosion.
Dr J.E. Field Dr S.M. Walley Cavendish Laboratory, Cambridge, UK
solid flows Abbas M.M. and Crowe C.T. Modelling the flow of solid-liquid mixtures through venturimeters Yianneskis M. and Whitelaw J.H. Velocity characteristics of pipe and jet flows with high particle concentration Crowder III R.S., Daily J.W. and Humphrey J.A.C. Numerical calculation of particle dispersion in a turbulent mixing layer flow Chung T.J. Two-phase flow instability of fluid-particle mixtures Michaelides E.E. and Farmer L.K. A model for slurry flows based on the equations of turbulence Keska J.K. Fluctuations of the solid spatial concentration in the stationary two-phase turbulent flow of heterogeneous mixtures in pipelines
Erosion Veerabhadra Rao P. and Buckley D.H. Solid
impingement erosion mechanisms and characterization of erosion resistance of ductile materials Shook C.A., Ghosh S.K. and Pilling F.E. Wall erosion in slurry couette flow Roco M.C., Addie G.R., Nair P. and
Dennis J. Erosion by concentrated slurries in turbulent flow Wiedenroth W. An experimental study of wear of centrifugal pumps and pipeline components Tuzson J.J,, Lee J and Schiebe-Powell K.A. Slurry erosion tests with centrifugal erosion tester Sargent G.A., Spencer D.K. and Sagues A.A. Erosion of steel by water based slurries
Applications Derammelaere R.H. and Wasp E.J. Mechanical dewatering, thermal drying and dust collection: an integrated approach Alexander D.W. and Shaw R.L. Coarse coal slurry transport at Loveridge mine Segev A. and Golan L.P. Analysis of flushing injection performance in a reciprocating plunger slurry pump Wilson K.C. Analysis of contact-load distribution and application to deposit limit in horizontal pipes Ponce-Campos C.D. and Wall D.G. A model for the calculation of hold-up in turbulent solid-liquid flow Yucel O. Simplified optimum-cost design of a slurry pipeline along a given route
227