Open Access. Powered by Scholars. Published by Universities.®
- Discipline
Articles 1 - 2 of 2
Full-Text Articles in Engineering
Air Vent Sizing In Low-Level Outlet Works For Small- To Medium-Sized Dams, Nathan W. Wright
Air Vent Sizing In Low-Level Outlet Works For Small- To Medium-Sized Dams, Nathan W. Wright
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
The majority of dams contain low-level outlet works, which typically consist of closed conduits that run through the dam, and are used to release water from the reservoir when the water level is below the level of the surface spillways. It is also used to flush the reservoir of sediments and to control the elevation of the reservoir. Low-level outlet works typically consist of a gate that controls the flow within a closed conduit that runs through the dam and an air vent that supplies air behind the gate. In the absence of properly designed air vents, negative pressures may …
Factors Affecting Air Entrainment Of Hydraulic Jumps Within Closed Conduits, Joshua D. Mortensen
Factors Affecting Air Entrainment Of Hydraulic Jumps Within Closed Conduits, Joshua D. Mortensen
All Graduate Theses and Dissertations, Spring 1920 to Summer 2023
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 …