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Experimental Studies To Establish Scaling Laws For Modeling Cavitation Damage Intensity
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Book Synopsis Experimental Studies to Establish Scaling Laws for Modeling Cavitation Damage Intensity by : R. E. Kohl
Download or read book Experimental Studies to Establish Scaling Laws for Modeling Cavitation Damage Intensity written by R. E. Kohl and published by . This book was released on 1968 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt: An experimental facility called the 'rotating foil apparatus' was designed and built to study cavitation erosion in an actual but controllable hydrodynamic system. Test results from this apparatus have confirmed the time dependence of cavitation intensity and also indicated the relationship between erosion intensity (I sub e) and cavitation parameter (sigma) for an NACA 16-021 foil section at 181 ft/sec. A family of the I sub e versus sigma curves is sought for several velocities so that the true relation between I sub e and velocity can be established thus providing a clue of the pressure which causes the bubbles to collapse. Additional testing is planned to determine the relationship between Reynold's number (Re) and erosion intensity (I sub e) for several values of cavitation parameter (sigma). The ultimate objective is modeling cavitation erosion. (Author).
Download or read book NASA Technical Paper written by and published by . This book was released on 1982 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1969 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scaling Laws for Cavitation Erosion by : A. Thiruvengadam
Download or read book Scaling Laws for Cavitation Erosion written by A. Thiruvengadam and published by . This book was released on 1971 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the report, six scaling laws are derived and used to investigate the feasibility of modeling cavitation erosion. The velocity scale and size scale are studied with regard to six nondimensional ratios, namely. the erosion number, the relative nuclei size, the Weber number, the cavitation number, the cavitation inception number and the degree of cavitation. These scaling laws indicate that it is possible to model erosion in the laboratory and to predict the prototype performance. In addition, these scaling laws may be used to explain many currently available experimental observations.
Book Synopsis Cavitation and Impact Erosion by : Phillip Eisenberg
Download or read book Cavitation and Impact Erosion written by Phillip Eisenberg and published by . This book was released on 1969 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :American Society for Testing and Materials Publisher :ASTM International ISBN 13 :9780803100633 Total Pages :442 pages Book Rating :4.1/5 (6 download)
Book Synopsis Characterization and Determination of Erosion Resistance by : American Society for Testing and Materials
Download or read book Characterization and Determination of Erosion Resistance written by American Society for Testing and Materials and published by ASTM International. This book was released on 1970 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report seeks to offer a best current assessment of the several elevated temperature properties that commonly form the basis for establishing allowable stresses or design stress intensity values. The results are presented in a form readily usable for that purpose. The data that are evaluated are those that have become available since the publication in 1955 of ASTM Data Series Publication DS 11 (formerly STP No. 180), Elevated Temperature Properties of Carbon Steels, as well as selected data from that earlier publication. The body of the report provides, in text, tables and figures, details concerning the materials, the evaluation procedures that were employed, and the results.
Author :Institution of Mechanical Engineers (Great Britain). Fluid Machinery Group Publisher :Institution ISBN 13 : Total Pages :170 pages Book Rating :4.3/5 (91 download)
Book Synopsis Scaling for Performance Prediction in Rotodynamic Machines by : Institution of Mechanical Engineers (Great Britain). Fluid Machinery Group
Download or read book Scaling for Performance Prediction in Rotodynamic Machines written by Institution of Mechanical Engineers (Great Britain). Fluid Machinery Group and published by Institution. This book was released on 1977 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Effects of Hydrodynamic Parameters on Cavitation Erosion Intensity by : A. Thiruvengadam
Download or read book Effects of Hydrodynamic Parameters on Cavitation Erosion Intensity written by A. Thiruvengadam and published by . This book was released on 1970 with total page 130 pages. Available in PDF, EPUB and Kindle. Book excerpt: A rotating foil apparatus was developed and used to study the effect of exposure time, pressure, velocity and size of the foil on intensity of cavitation erosion. Earlier studies with a vibratory apparatus showed that the rate of erosion increases with exposure time, reaches a maximum value and then decreases. These observations are essentially confirmed for the case of erosion on an actual hydrofoil. The maximum rate of erosion is then correlated with the cavitation parameter for two sizes of NACA 16-021 hydrofoil (3 inches and 1 1/2 inches in chord length). The intensity of erosion increases with decreasing cavitation parameter, reaches a peak and then decreases with decreasing cavitation parameter at a given velocity. An approximate analysis was made to explain this result. According to this analysis, the intensity of erosion should vary as the cube of the velocity and should be independent of the size of the foil. However, the experimental results show that the intensity of erosion varies as the sixth power of the velocity and also depends on the size of the foil. An understanding of these two scale effects is essential for a successful model-prototype correlation. (Author).
Download or read book Naval Research Reviews written by and published by . This book was released on 1969 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Universal Approach to Analysis of Cavitation and Liquid-impingement Erosion Data by : P. Veerabhadra Rao
Download or read book Universal Approach to Analysis of Cavitation and Liquid-impingement Erosion Data written by P. Veerabhadra Rao and published by . This book was released on 1982 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis U.S. Government Research & Development Reports by :
Download or read book U.S. Government Research & Development Reports written by and published by . This book was released on 1968 with total page 840 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis ASTM Special Technical Publication by :
Download or read book ASTM Special Technical Publication written by and published by . This book was released on 1961 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis U.S. Government Research and Development Reports Index by :
Download or read book U.S. Government Research and Development Reports Index written by and published by . This book was released on 1968 with total page 582 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Recent Progress in Pump Research by : Von Karman Institute for Fluid Dynamics
Download or read book Recent Progress in Pump Research written by Von Karman Institute for Fluid Dynamics and published by . This book was released on 1973 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis International Committee Reports, Introductory Remarks, Discussions, and Conclusions by : International Towing Tank Conference
Download or read book International Committee Reports, Introductory Remarks, Discussions, and Conclusions written by International Towing Tank Conference and published by . This book was released on 1975 with total page 740 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Index written by and published by . This book was released on 1968 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis On Modeling Cavitation Damage by : A. Thiruvengadam
Download or read book On Modeling Cavitation Damage written by A. Thiruvengadam and published by . This book was released on 1966 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt: The intensity of bubble collapse is defined as the power transmitted per unit surface area of the bubble when the collapse pressure is a maximum and is given by the square of the collapse pressure divided by the acoustic impedence of the liquid. The efficiency of damage is defined as the ratio of the intensity of erosion of the material to the intensity of bubble collapse. Quantitative analysis is made to show how this efficiency would be affected by various physical effects such as inertia, damping of gas and vapor inside the bubble, heat transfer, compressibility, surface tension and viscosity. Experimental results with vibratory apparatus show that the efficiency of damage is primarily controlled by the damping of non-condensible gases and vapor. At higher temperature viscosity also seems to be important. Within the range of experiments, surface tension of the liquids tested seems to be unimportant. The group of non-dimensional numbers derived from the above analysis as used to formulate a modeling technique to predict the rate of depth of erosion in actual operating hydrodynamic systems. (Author).
