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Book Factors Affecting Air Entrainment of Hydraulic Jumps Within Closed Conduits

Download or read book Factors Affecting Air Entrainment of Hydraulic Jumps Within Closed Conduits written by Joshua D. Mortensen and published by . This book was released on 2009 with total page 65 pages. Available in PDF, EPUB and Kindle. Book excerpt: While there has been a great deal of research on air entrainment at hydraulic jumps within closed conduits, very little of the research has specifically addressed size and temperature scale effects. Influences from jump location and changing length characteristics on air entrainment have also received little attention from past research. To determine the significance of size-scale effects of air entrained by hydraulic jumps in closed conduits, air flow measurements were taken in four different-sized circular pipe models with similar Froude numbers. Each of the pipe models sloped downward and created identical flow conditions that differed only in size. Additionally, specific measurements were taken in one of the pipe models with various water temperatures to identify any effects from changing fluid properties. To determine the significance of the effects of changed length characteristics on air demand, air flow measurements were taken with hydraulic jumps at multiple locations within a circular pipe with two different air release configurations at the end of the pipe. iii Results showed that air demand was not affected by the size of the model. All together, the data from four different pipe models show that size-scale effects of air entrained into hydraulic jumps within closed conduits are negligible. However, it was determined that air entrainment was significantly affected by the water temperature. Water at higher temperatures entrained much less air than water at lower temperatures. Hydraulic jump location results showed that for both configurations the percentage of air entrainment significantly increased as the hydraulic jump occurred near the point of air release downstream. As the jump occurred nearer to the end of the pipe, its length characteristics were shortened and air demand increased. However, jump location was only a significant factor until the jump occurred some distance upstream where the length characteristics were not affected. Upstream of this location the air demand was dependent only on the Froude number immediately upstream of the jump.

Book The Effect of Submerged Jets on the Hydraulic Jump

Download or read book The Effect of Submerged Jets on the Hydraulic Jump written by Harvey E. Jobson and published by . This book was released on 1965 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Tests were performed in order to determine the effects of forcing submerged jets of water into the base of a hydraulic jump. The specific energy of the water leaving the hydraulic jump, the length of the wave formation properties of the jump which had been modified by the introduction of submerged jets were determined and compared with the same characteristics of a normal hydraulic jump and a hydraulic jump which had been modified by the use of baffle piers. Test results indicate: (a) the quantity of water flowing through the submerged jets is a primary factor in determining the specific energy of the water leaving the hydraulic jump and these jets can be as effective as baffle piers in reducing the specific energy of the water leaving the hydraulic jump; (b) submerged jets can be more effective than baffle piers in reducing the length of the hydraulic jump; (c) submerged jets are not as effective as baffle piers in reducing the wave formation properties of a jump"--Abstract, leaf ii.

Book Hydraulic Laboratory Practice

Download or read book Hydraulic Laboratory Practice written by United States. Bureau of Reclamation and published by . This book was released on 1953 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Engineering Monographs

Download or read book Engineering Monographs written by United States. Bureau of Reclamation and published by . This book was released on 1948 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Properties of the Hydraulic Jump in Sloping Circular Conduits

Download or read book Properties of the Hydraulic Jump in Sloping Circular Conduits written by Suleiman A. Ibranhim Ayoub and published by . This book was released on 1959 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book The Hydraulic Jump in Enclosed Conduits

Download or read book The Hydraulic Jump in Enclosed Conduits written by Carl Edward Kindsvater and published by . This book was released on 1937 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Engineering Monograph

Download or read book Engineering Monograph written by and published by . This book was released on 1952 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Air Problems in Pipelines

Download or read book Air Problems in Pipelines written by Manuela Escarameia and published by . This book was released on 2005-01-01 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Modification of the Hydraulic Jump by Submerged Jets

Download or read book Modification of the Hydraulic Jump by Submerged Jets written by Edward Leon Tharp and published by . This book was released on 1965 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Tests were performed in order to determine the effect of submerged jets injecting water into the base of the hydraulic jump. The jump was studied in terms of the following properties: specific energy of the flow leaving the hydraulic jump, length of the hydraulic jump, tailwater depth, and wave formation properties. These properties for the hydraulic jump with submerged jets were compared to the natural hydraulic jump. Results of the tests indicate that: submerged jets at any angle tested tend to decrease the specific energy of the water leaving the jump and are more effective than the impulse-momentum principle indicates, submerged jets may be as effective as baffle piers in reducing the length of the jump, and submerged jets at any angle tend to decrease the required tailwater depth of the hydraulic jump"--Abstract, leaf ii.

Book Hydraulic Laboratory Practice

Download or read book Hydraulic Laboratory Practice written by United States. Bureau of Reclamation and published by . This book was released on 1958 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Selected Water Resources Abstracts

Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1986 with total page 1140 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Selected Water Resources Abstracts

Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1986 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Civil Engineering Hydraulics Abstracts

Download or read book Civil Engineering Hydraulics Abstracts written by and published by . This book was released on 1983 with total page 830 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Applied mechanics reviews

Download or read book Applied mechanics reviews written by and published by . This book was released on 1948 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: