Certuche-Alzate, Lilian J.

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Electromagnetic modeling of laboratory-scale 2d soil-bed setup
(2009) Certuche-Alzate, Lilian J.; Rodríguez-Solís, Rafael A.; College of Engineering; Colom-Ustariz, José; Padilla, Ingrid; Department of Electrical and Computer Engineering; Vásquez, Pedro
This work presents the development of electromagnetic model for the laboratory 2-D Soil-Bed setup, which was developed at the Civil Engineering Department of the University of Puerto Rico, Mayaguez, to verify the posibility to detect a contaminant (DNAPL) in the subsurface, using Cross Well Radar (CWR) technologies. The electromagnetic model developed using two electromagnetic simulators, Ansoft’s HFSS and Remcom’s XFDTD. The simulations are done for dry and saturated sand, with and without the contaminant, with different shapes and positions of the contaminant pools within the tank, transmitting through all the different ports independently, where we observed for each case the E-field propagation and S-parameters at the three analysis frequencies of 285 MHz, 515 MHz and 1.5 GHz. The results of the XFDTD simulator are used to verify the results in the HFSS simulator. The analysis of the S-parameters, taking into account the position of the ports, shows it is possible to detect the contaminant in dry sand and saturated sand at the analysis frequencies.