Lau, S. D., Stovin, V. R. and Guymer, I. (2007) The prediction of solute transport in surcharged manholes using CFD. In: 7th International Conference on Urban Drainage Modelling/4th International Conference on Water Sensitive Urban Design, Melbourne, AUSTRALIA, APR 02-07, 2006. Published in: WATER SCIENCE AND TECHNOLOGY, 55 (4). pp. 57-64.

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Abstract

Solute transport processes occur within a wide range of water engineering structures, and urban drainage engineers increasingly rely on modelling tools to represent the transport of dissolved materials. The models take as input representative travel time and dispersion characteristics for key system components, and these generally have to be identified via field or laboratory measurements. Computational Fluid Dynamics (CFD) has the potential to reveal the underlying hydraulic processes that control solute transport, and to provide a generic means of identifying relevant parameter values. This paper reports on a study that has been undertaken to evaluate the feasibility of utilising a CFD-based approach to modelling solute transport. Discrete phase modelling has been adopted, as this is computationally efficient and robust when compared with the time-dependent solution of the advection-dispersion equation. Simulation results are compared with published laboratory data characterising the dispersion effects of surcharged manholes, focusing specifically on an 800 mm diameter laboratory manhole for a flowrate of 0.002 m(3)/s and a range of surcharge depths. Preliminary indications are that the CFD results adequately replicate the measured downstream temporal concentration profiles, and that a threshold surcharge depth, corresponding to a change in hydraulic regime within the manhole, can also be identified.

Item Type:	Conference Item (UNSPECIFIED)
Subjects:	T Technology > TD Environmental technology. Sanitary engineering G Geography. Anthropology. Recreation > GE Environmental Sciences T Technology > TC Hydraulic engineering. Ocean engineering
Journal or Publication Title:	WATER SCIENCE AND TECHNOLOGY
Publisher:	I W A PUBLISHING
ISSN:	0273-1223
Official Date:	2007
Volume:	55
Number:	4
Number of Pages:	8
Page Range:	pp. 57-64
Identification Number:	10.2166/wst.2007.095
Publication Status:	Published
Title of Event:	7th International Conference on Urban Drainage Modelling/4th International Conference on Water Sensitive Urban Design
Location of Event:	Melbourne, AUSTRALIA
Date(s) of Event:	APR 02-07, 2006
URI:	http://wrap.warwick.ac.uk/id/eprint/30979

Data sourced from Thomson Reuters' Web of Knowledge

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