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Title: Simulation of the interplay between resident and infiltrating water in partially saturated porous media

Abstract

The interplay between resident water already in the subsurface environment (``old water") and infiltrating water (``new water") is examined. A smoothed particle hydrodynamics technique is used to simulate the interplay between old water and new water in a porous medium, over a cycle of drainage of old water and infiltration of new water. The effect of varying the average pore size is investigated via the Bond number, and several parameters (maximal mixing amount, minimal average size of old water pockets, mixing value for which the number of old water pockets decreases, and amount of old water remaining in the system for long times) are found to be independent of the average pore size, while the rate of change is always higher for larger pores. In particular, a certain amount of old water remains in the system within stable water pockets even after new water infiltration reaches steady state, and comprises about 2\% of the total water at steady state.

Authors:
; ;
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
963168
Report Number(s):
PNNL-SA-62090
Journal ID: ISSN 0043-1397; WRERAQ; KJ0101010; TRN: US200917%%177
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Journal Name:
Water Resources Research, 45:Article No: W05416
Additional Journal Information:
Journal Volume: 45; Journal ID: ISSN 0043-1397
Country of Publication:
United States
Language:
English
Subject:
58 GEOSCIENCES; POROUS MATERIALS; GROUND WATER; DRAINAGE; HYDRODYNAMICS; WATER INFLUX; INTERACTIONS; PORE STRUCTURE; FLOW MODELS

Citation Formats

Gouet-Kaplan, Maxime, Tartakovsky, Alexandre M, and Berkowitz, Brian. Simulation of the interplay between resident and infiltrating water in partially saturated porous media. United States: N. p., 2009. Web. doi:10.1029/2008WR007350.
Gouet-Kaplan, Maxime, Tartakovsky, Alexandre M, & Berkowitz, Brian. Simulation of the interplay between resident and infiltrating water in partially saturated porous media. United States. https://doi.org/10.1029/2008WR007350
Gouet-Kaplan, Maxime, Tartakovsky, Alexandre M, and Berkowitz, Brian. 2009. "Simulation of the interplay between resident and infiltrating water in partially saturated porous media". United States. https://doi.org/10.1029/2008WR007350.
@article{osti_963168,
title = {Simulation of the interplay between resident and infiltrating water in partially saturated porous media},
author = {Gouet-Kaplan, Maxime and Tartakovsky, Alexandre M and Berkowitz, Brian},
abstractNote = {The interplay between resident water already in the subsurface environment (``old water") and infiltrating water (``new water") is examined. A smoothed particle hydrodynamics technique is used to simulate the interplay between old water and new water in a porous medium, over a cycle of drainage of old water and infiltration of new water. The effect of varying the average pore size is investigated via the Bond number, and several parameters (maximal mixing amount, minimal average size of old water pockets, mixing value for which the number of old water pockets decreases, and amount of old water remaining in the system for long times) are found to be independent of the average pore size, while the rate of change is always higher for larger pores. In particular, a certain amount of old water remains in the system within stable water pockets even after new water infiltration reaches steady state, and comprises about 2\% of the total water at steady state.},
doi = {10.1029/2008WR007350},
url = {https://www.osti.gov/biblio/963168}, journal = {Water Resources Research, 45:Article No: W05416},
issn = {0043-1397},
number = ,
volume = 45,
place = {United States},
year = {Tue May 19 00:00:00 EDT 2009},
month = {Tue May 19 00:00:00 EDT 2009}
}