1. 1. Used Fuel Disposition Campaign DECOVALEX-2015 heater test modeling highlights Jonny Rutqvist, Jens Birkholzer Lawrence Berkeley National Laboratory UFD WG Meeting in Las Vegas International Disposal R&D Sessions June 8, 2016
2. 2. Used Fuel Disposition DECOVALEX-2015 Tasks related to Heater Experiments (2012-2015) DECOVALEX-2015 Task B1: Mont Terri HE-E experiment in Opalinus Clay (8 international research teams) - Step 1 Modeling HE-D heating experiment of Opalinus Clay and THM laboratory experiment on bentonite - Steps 2 and 3 HE-E experiment predictive modeling and interpretative analysis DECOVALEX-2015 Task B2: Horonobe EBS experiment in siliceous mudstone (5 international research teams) - Step 1 Benchmark calculation related EBS experiment for code comparison and bentonite characterization - Steps 2 and 3 Horonobe EBS predictive modeling and interpretative analysis Included up to 3 years of heating data (2011 to 2014) Heating at Horonobe EBS started January 2015
3. 3. Used Fuel Disposition TOUGH-FLAC Model of Mont Terri HE-E Experiment FLAC3D Geomechanical Simulator TOUGH Multiphase Flow Simulator FLAC3D Geomechanical Simulator TOUGH Multiphase Flow Simulator Full multphase flow (gas and liquid ) simulations coupled with geomechanics
4. 4. Used Fuel Disposition LBNL MODEL PREDICTION VS MEASURMENTS Relative Humidity Temperature Model Prediction Measurements 4
5. 5. Used Fuel Disposition Date Presentation or Meeting Title 5 8 INTERNATIONAL MODELING TEAMS
6. 6. Used Fuel Disposition Date Presentation or Meeting Title 6 Trends of heating and drying near heat source is captured in all models with some variations COMPARE RESULTS IN BENTONITE BUFFER Granular Bentonite Bentonite blocks Granular Bentonite Bentonite blocks
7. 7. Used Fuel Disposition Concrete Lining Plug Heater Bentonite Sand layer Backfill 60m TOUGH-FLAC Model of Horonobe EBS Experiment 3D TOUGH-FLAC model grid June 10, 2015 UFD WG Meeting in Las Vegas 7
8. 8. Used Fuel Disposition Date Presentation or Meeting Title 8 5 INTERNATIONAL MODELING TEAMS
9. 9. Used Fuel Disposition Date Presentation or Meeting Title 9 20.0 30.0 40.0 50.0 60.0 70.0 80.0 0 50 100 150 Temperature Elapsed time (day) TE009 Thermocouple JAEA CAS BGR Inha Univ./KAERI LBNL/DOE Horonobe EBS Models vs Observations (5 DECOVALEX-2015 teams) 0.00 0.05 0.10 0.15 0.20 0 20 40 60 80 100 120 Stress(MPa) Elapsed time (day) TP009 Pressure cell JAEA CAS BGR Inha Univ./KAERI LBNL/DOE Temperature prediction good Stress very small after 75 days in both data and models (far from fully developed swelling)
10. 10. Used Fuel Disposition Date Presentation or Meeting Title 10 Participating DECOVALEX-2015 provides access to multi-million dollar, multi-year experimental data for testing and validating models at a relevant scale Excellent forum for exchange of ideas and new approaches to model complex coupled processes Final DECOVALEX-2015 reports of have been delivered in May 2016 4 joint journal papers among international participants are in preparation (submission June 30, 2016) Look forward to DECOVALEX-2019 work on heater test data in Callovo-Oxfordian claystone (COx) at MHM URL France Concluding Remarks