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Minimum Self-Cleansing Velocities for Inverted Sewer Siphons
Laboratory experiments were carried out to determine minimum self-cleansing velocities for preventing deposition of sediment in upward sloping and vertical pipes of inverted siphons. Tests were made using sediment sizes of 0.78mm and 4.3mm in a pipe of 150mm diameter for eight angles of inclination between 0° and 90°. The criterion for self-cleansing was defined as the minimum velocity needed to prevent the formation of separated dunes in the pipes. For a given sediment concentration the self-cleansing velocity was found to be a maximum at pipe slopes between about 30° and 37.5°. Analysis of the data enabled the results to be described by a single formula valid for any slope of pipe between horizontal and vertical.
Minimum Self-Cleansing Velocities for Inverted Sewer Siphons
Laboratory experiments were carried out to determine minimum self-cleansing velocities for preventing deposition of sediment in upward sloping and vertical pipes of inverted siphons. Tests were made using sediment sizes of 0.78mm and 4.3mm in a pipe of 150mm diameter for eight angles of inclination between 0° and 90°. The criterion for self-cleansing was defined as the minimum velocity needed to prevent the formation of separated dunes in the pipes. For a given sediment concentration the self-cleansing velocity was found to be a maximum at pipe slopes between about 30° and 37.5°. Analysis of the data enabled the results to be described by a single formula valid for any slope of pipe between horizontal and vertical.
Minimum Self-Cleansing Velocities for Inverted Sewer Siphons
May, Richard W. P. (author)
Specialty Symposium on Urban Drainage Modeling at the World Water and Environmental Resources Congress 2001 ; 2001 ; Orlando, Florida, United States
Urban Drainage Modeling ; 173-183
2001-11-21
Conference paper
Electronic Resource
English
Slopes , Sediment , Runoff , Siphons , Velocity , Urban areas , Floods , Combined sewers , Watersheds , Sanitary sewers , Computer applications , Deposition , Models , Water quality
Minimum Self-Cleansing Velocities for Inverted Sewer Siphons
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