Next Article in Journal
Water Pollution Control Legislation in Israel: Understanding Implementation Processes from an Actor-Centered Approach
Previous Article in Journal
Polydimethylsiloxane Rods for the Passive Sampling of Pesticides in Surface Waters
Article Menu

Export Article

Open AccessArticle
Water 2013, 5(3), 1380-1392; doi:10.3390/w5031380

Experimental Analysis of a Vertical Drop Shaft

Department of Civil, Architectural and Environmental Engineering, Università di Napoli Federico II, Via Claudio 21, 80125 Naples, Italy
*
Author to whom correspondence should be addressed.
Received: 11 July 2013 / Revised: 16 August 2013 / Accepted: 3 September 2013 / Published: 12 September 2013
View Full-Text   |   Download PDF [412 KB, 9 June 2015; original version 9 June 2015]   |  

Abstract

An experimental campaign is undertaken in order to investigate the hydraulic features of a vertical drop shaft, also considering the influence of a venting system consisting of a coaxial vertical pipe, projecting within the drop shaft with different plunging rates. Three different flow regimes are observed: a “weir flow” for very low head values, where the flow profile is subject to the atmospheric pressure; a “full flow” for high head values, where water flows in a pressurized regime along the whole shaft; and a “transitional flow” for intermediate water head values. Weir flow and full flow can be experimentally investigated under steady-state conditions, whereas transitional flow is a pulsating condition, alternately switching from full flow to weir flow. Considering some significant geometric parameters, a head-discharge relation is sought both for the non-vented and for the vented configurations, by means of an energy balance equation, with specific assumptions about intake losses. View Full-Text
Keywords: drop shaft; friction losses; intake losses; pipe Froude number; full flow; weir flow; transitional flow; cavitation drop shaft; friction losses; intake losses; pipe Froude number; full flow; weir flow; transitional flow; cavitation
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Padulano, R.; Del Giudice, G.; Carravetta, A. Experimental Analysis of a Vertical Drop Shaft. Water 2013, 5, 1380-1392.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Water EISSN 2073-4441 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top