A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Construction Finishes and High-Velocity Flow
Laboratory research and field experience shows that finish tolerances are essential and important for construction surfaces that are to support high-velocity water flows. Surface irregularities must be prevented, minimized, or treated to prevent cavitation damage to these surfaces. Irregularities frequently encountered during the construction of hydraulic structures are illustrated and their cavitation potential examined. How these irregularities affect pressure conditions on the flow surface and cause cavitation damage is explained. The results of a limited number of research programs that give the critical sizes of various types of surface irregularities for numerous combinations of flow velocity and pressure are presented. Charts for sharp cornered, round cornered, and chamfered cornered offsets-into-the-flow are presented. Similar offsets receding from the flow are reviewed. The effects of orientation of the irregularities with the direction of flow on cavitation potential are mentioned. Treatment by grinding the irregularities to non-critical proportions and shapes is suggested. Field experience and test results that support specification limitations practiced by the USBR are included.
Construction Finishes and High-Velocity Flow
Laboratory research and field experience shows that finish tolerances are essential and important for construction surfaces that are to support high-velocity water flows. Surface irregularities must be prevented, minimized, or treated to prevent cavitation damage to these surfaces. Irregularities frequently encountered during the construction of hydraulic structures are illustrated and their cavitation potential examined. How these irregularities affect pressure conditions on the flow surface and cause cavitation damage is explained. The results of a limited number of research programs that give the critical sizes of various types of surface irregularities for numerous combinations of flow velocity and pressure are presented. Charts for sharp cornered, round cornered, and chamfered cornered offsets-into-the-flow are presented. Similar offsets receding from the flow are reviewed. The effects of orientation of the irregularities with the direction of flow on cavitation potential are mentioned. Treatment by grinding the irregularities to non-critical proportions and shapes is suggested. Field experience and test results that support specification limitations practiced by the USBR are included.
Construction Finishes and High-Velocity Flow
Ball, James W. (author)
Journal of the Construction Division ; 89 ; 91-110
2021-01-01
201963-01-01 pages
Article (Journal)
Electronic Resource
Unknown
Construction finishes and high-velocity flow
| Engineering Index Backfile | 1963
Taylor & Francis Verlag | 1991