Aravena, Jazmín E. and Dussaillant, Alejandro (2009) Storm-water infiltration and focused recharge modeling with finite-volume two-dimensional Richards equation: application to an experimental rain garden. Journal of Hydraulic Engineering, 135 (12). pp. 1073-1080. ISSN 0733-9429 (Print), 1943-7900 (Online) (doi:10.1061/(ASCE)HY.1943-7900.0000111)

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Abstract

Rain gardens are infiltration systems that provide volume and water quality control, recharge enhancement, as well as landscape, ecological, and economic benefits. A model for application to rain gardens based on Richards equation coupled to a surface water balance was developed, using a two-dimensional finite-volume code. It allows for alternating upper boundary conditions, including ponding and overflow, and can simulate heterogeneous soil-layering or more complex geometries to estimate infiltration and recharge. The algorithm is conservative, and exhibits good performance compared to standard models for several test cases (less than 0.1% absolute mass balance error); simulations were also performed for an experimental rain garden and comparisons to collected data are presented. The model accurately simulated the matrix flow, soil water distribution, as well as deep percolation (potential recharge) for a natural rainfall event in the controlled experimental setup.
Read More: http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29HY.1943-7900.0000111?prevSearch=authors%3A%28Dussaillant%2C%29&searchHistoryKey=

Item Type:	Article
Additional Information:	[1] This is the Author's Accepted Manuscript version, uploaded in accordance with the publisher's self-archiving policy. Please note: this is the author’s version of a work that was accepted for publication in JOURNAL OF HYDRAULIC ENGINEERING. Changes resulting from the publishing process, such as editing, structural formatting, and other quality control mechanisms may not be reflected in this document. The definitive version is available at: http://dx.doi.org/10.1061/(ASCE)HY.1943-7900.0000111 [2] This article is published in the Technical Notes section of the journal issue.
Uncontrolled Keywords:	stormwater management, urban areas, lysimeters, rainfall, infiltration, water quality
Subjects:	G Geography. Anthropology. Recreation > GE Environmental Sciences T Technology > TC Hydraulic engineering. Ocean engineering
Pre-2014 Departments:	School of Engineering
Related URLs:	Publisher
Last Modified:	15 Oct 2016 23:18
URI:	http://gala.gre.ac.uk/id/eprint/9650

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