Experimental Study of Flow Characteristics in Vortex Drop Shaft
Publication: Journal of Pipeline Systems Engineering and Practice
Volume 12, Issue 3
Abstract
Vortex drop shafts are utilized to dissipate and transport the energy of flows in sewerage networks. A vortex drop shaft is composed of three parts: the inlet structure, the vertical shaft, and the dissipation chamber. This study evaluated the performance of the dissipation chamber in terms of flow energy dissipation, the type of outflow (e.g., subcritical and supercritical), and the amount of pressure imposing on the chamber bottom. To improve the performance of the dissipation chamber, four elements—a baffle, a weir, a venturi, and a sump—were implemented. Then the influence of each element on the performance of the dissipation chamber was investigated. The results revealed that such elements dissipated the inflow to the chamber by 90.5%–96.9%. These elements also take part in controlling outflow and decreasing pressure on the chamber bottom. Considering flow energy dissipation, the type of outflow and imposing pressure on the dissipation chamber bottom, appropriate geometric dimensions for the elements inside the dissipation chamber are proposed.
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Data Availability Statement
Some or all data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request.
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Published In
Journal of Pipeline Systems Engineering and Practice
Volume 12 • Issue 3 • August 2021
Copyright
© 2021 American Society of Civil Engineers.
History
Received: Oct 20, 2020
Accepted: Mar 17, 2021
Published online: Jun 2, 2021
Published in print: Aug 1, 2021
Discussion open until: Nov 2, 2021
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