Numerical investigations on pesticide fate and transport in an unsaturated porous medium for a coupled water and pesticide management

2016 ◽  
Vol 75 (17) ◽  
Author(s):  
Omkar D. Gaonkar ◽  
G. Suresh Kumar ◽  
Indumathi M. Nambi
Keyword(s):  
Porous Medium ◽  
Fate And Transport ◽  
Numerical Investigations ◽  
Pesticide Management ◽  
Unsaturated Porous Medium

CHAOTIC BEHAVIOR INDUCED BY THERMAL MODULATION IN A MODEL OF THE CONVECTIVE FLOW OF A FLUID MIXTURE IN A POROUS MEDIUM

1999 ◽  
Vol 09 (02) ◽  
pp. 383-396 ◽  
Author(s):  
J.-M. MALASOMA ◽  
P. WERNY ◽  
C.-H. LAMARQUE
Keyword(s):  
Porous Medium ◽  
Convective Flow ◽  
Chaotic Behavior ◽  
Period Doubling ◽  
Chaotic Attractors ◽  
Global Behavior ◽  
Type I ◽  
Fluid Mixture ◽  
Numerical Investigations ◽  
Period Doubling Bifurcations

Numerical investigations of the global behavior of a model of the convective flow of a binary mixture in a porous medium are reported. We find a complex behavior characterized by the presence of coexisting periodic, quasiperiodic and chaotic attractors. Bifurcations of periodic solutions and routes to chaos via type-I intermittency and period-doubling bifurcations are described. Boundary crises and band merging crises have also been observed.

Measurement of two-fluid saturations in a fine to medium sand

1996 ◽  
Vol 33 (6) ◽  
pp. 1014-1017 ◽  
Author(s):  
C F Gravelle ◽  
M A Knight ◽  
R J Mitchell
Keyword(s):  
Experimental Study ◽  
Porous Medium ◽  
Porous Media ◽  
Key Words ◽  
Oil Content ◽  
Reliable Method ◽  
Medium Sand ◽  
Unsaturated Porous Medium ◽  
Phase Liquid ◽  
Two Fluid

The infiltration of a light nonaqueous phase liquid (LNAPL) into an unsaturated porous medium will result in varying amounts of water, LNAPL, and air within the soil voids. A simple and reliable method of determining the percent saturation of each fluid is needed to analyze laboratory infiltration experiments. This note reviews the available methodologies for determining the oil content in porous media and presents an experimental study of a simple and reliable method for determining water and oil contents in an unsaturated fine to medium sand. Key words: fluid saturations, oil content, gravimetric, extraction, assay.

Optimal Control of Intensity of Water Point Sources in Unsaturated Porous Medium

2019 ◽  
Vol 51 (7) ◽  
pp. 24-33 ◽  
Author(s):  
Sergey I. Lyashko ◽  
Dmitriy A. Klyushin ◽  
Andrey A. Timoshenko ◽  
Nataliya I. Lyashko ◽  
Elena S. Bondar
Keyword(s):  
Optimal Control ◽  
Porous Medium ◽  
Point Sources ◽  
Unsaturated Porous Medium ◽  
Water Point
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