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Two-phase-reactive solute-transport simulation in unsaturated zone

DSpace at IIT Bombay

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Title Two-phase-reactive solute-transport simulation in unsaturated zone
 
Creator SULEKHA
KASHYAP, D
DUIJNISVELD, WHM
 
Subject transfer-function model
field-scale
heterogeneous soil
porous-media
water-flow
dispersion
 
Description A numerical model is developed for the simulation of vertical unsteady-state, two-phase reactive solute-transport through the unsaturated zone. Advective transport is simulated using the method of characteristics, whereas diffusive-dispersive transport and interphase lateral diffusion are accounted for by an implicit finite-difference scheme. The soil moisture and flux distribution required for solving the solute-transport equation is obtained by solving Richards' equation. The model is verified by comparing model-simulated solute-transport with the results of an existing analytical solution. A good agreement is obtained for different sets of parameters. Also for very small dispersivity values no numerical dispersion is present. The proposed model is also used to simulate reported experimental data of a field experiment and shows adequate agreement.
 
Publisher ASCE-AMER SOC CIVIL ENGINEERS
 
Date 2011-07-18T15:07:35Z
2011-12-26T12:50:41Z
2011-12-27T05:36:40Z
2011-07-18T15:07:35Z
2011-12-26T12:50:41Z
2011-12-27T05:36:40Z
1998
 
Type Article
 
Identifier JOURNAL OF IRRIGATION AND DRAINAGE ENGINEERING-ASCE, 124(3), 140-147
0733-9437
http://dspace.library.iitb.ac.in/xmlui/handle/10054/4962
http://hdl.handle.net/10054/4962
 
Language en