Hydraulic Jump and Resultant Flow Choking in a Circular Sewer Pipe of Steep Slope

摘要: Urban flood caused by storm-water runoff has been problematic for many regions. There is a need to improve the design and hydraulic performance of storm sewer-pipes, which will help reduce impact urban flood. Such motivated current study. This paper investigates flow behaviour in circular pipe steep slope, supercritical descends terrain forms jump under control acting downstream. So far, resultant choking are poorly understood. formulates problem slope on basis momentum principle solves it using iterative methods. The solutions include filling ratio field downstream an undular direct jump. For first time, Froude number’s dependence quantified. given possible have two different ratios (or equivalently discharges) that associate with same number value. reports detailed results initial versus sequent depth jumps quantitatively delineates slope-filling space between flow-choking choking-free zones. sewers hilly area, necessary correct guidelines, rely mostly uniform theory suggest as high 85%. corrections either decreasing or increasing diameter achieve pipe.