Research Fellow: Richard Hoffmann
Find him on ResearchGate !
Host Institution : Hydrogeology &
University of Liege, Belgium
1) Characterization of preferential flow paths with multiple-scale transport modeling for heterogenous porous and fractured media using innovative joint heat and solute tracer tests.
2) Assessing the impact of preferential flow paths and quantify the associated uncertainty in model predictions by using a dual-domain approach and Bayesian Evidential Learning (BEL).
More details about ESR11-project:
- Tasks and methodology
- Dissemination and communication
- Database for the future datasets
– 6 months at NRGI Hyderabad, India within BRGM – to confirm depending on visas and environmental conditions.
– 3 months at Research Center Jülich, Germany (Foreseen time schedule: May 06, 2019 till August 06, 2019 )
Tasks and methodology
Tasks: Carrying out a multi-tracer approach with multiple well injection and pumping tests in alluvial sediments and fractured rocks. Field tests measurements will be complemented by Distributed Temperature Sensing (DTS) and geophysical imaging.
Methodology: Using the complementary behavior of multiple tracers based on different diffusion coefficients and sensitivities to preferential flow paths and matrix diffusion. Uncertainty will be addressed using the BEL method.
- Prof. A. Dassargues, Hydrogeology and Environmental Geology, University of Liege
- Prof. P. Goderniaux, Geology and Applied Geology, University of Mons
- Additional: Prof. F. Nguyen (University of Liege) and Prof. T. Hermans (Ghent University)
- Secondment: Dr. J.-C. Maréchal (BRGM) and Dr. A. Selles (BRGM/IFCGR)
Dissemination and communication
( If you encounter issues to open the PDF documents using Chrome : please follow the Google advice : Chrome Help or use Firefox)
- Oral presentation + Conference Paper
(2018): Prior uncertainty investigation of density-viscosity dependent joint heat and solute in alluvial sediments. Computational Methods in Water Ressources XXII – CMWR 2018, Saint Malo (France).
- Poster presented during the 4th Cargèse Summer School :Multi scale transport modelling in heterogenous porous and fractured media
- Oral presentation at 45th IAH Congress (The International Association of Hydrogeologists), Daejeon, South Korea: Fractured aquifer heterogeneity characterization for advanced transport modelling based on multiple single fracture tracer tests
- Conference paper : The double porosity of the chalk and its influence on solute and heat transport from 6th International Geologica Belgica Meeting 2018, At Leuven, Belgium, Volume: Theme 5: Hydrology and environmental geology for the future – Oral Presentation
- Video of a field experiment on the Hyderabad site (tracer tests at Hyderabad with the BRGM, NGRI, November 2018):
Database for the future datasets : H+ database
BEL: Bayesian Evidential Learning relies on a limited number of Monte Carlo simulations sampling the prior distribution of model parameters to analyze the global sensitivity of parameters
DTS: Distributed Temperature Sensing serves for recording temperature as continuous profile along an optical sensor cable.