Gexcon R&D activities & prospects

Transcription

1 Gexcon R&D activities & prospects Helene Hisken, Gexcon Software

2 Outline Background and news from the department Overview of on-going R&D projects Initiatives related to hydrogen safety Other initiatives Flacs3 development

3 Outline Background and news from the department Overview of on-going R&D projects Initiatives related to hydrogen safety Other initiatives Flacs3 development

4 Nomenclature: FLACS

5 Nomenclature: Flacs

6 Gexcon R&D Gexcon Software develops the leading software for dispersion, fire and explosion safety : FLACS Responsibilities of Gexcon R&D Develop and validate physics models in the Flacssolver for all FLACS applications. Conduct and win externally funded research projects do technical marketing and publications. Act as technical leads on physical phenomena.

7 Outline Background and news from the department Overview of on-going R&D projects Initiatives related to hydrogen safety Other initiatives Flacs3 development

8 Initiatives on hydrogen safety HySEA (Improving Hydrogen Safety for Energy Applications through pre-normative research on vented deflagrations). SH2IFT(Safe Hydrogen Fuel Handling and Use for Efficient Implementation, KPN project funded by RCN the Research Council of Norway). Statens vegvesen, Jon Opseth

9 HySEA to be presented in more detail later! Improving Hydrogen Safety for Energy Applications through pre-normative research on vented deflagrations. Project period: 1 September August 2018 (?) Consortium: Gexcon (Coordinator), University of Warwick (UWAR), University of Pisa (UNIPI), Fike Europe, Impetus Afea and Hefei University of Technology (HFUT, self-funded ). Total budget: About 1.5 MEUR + about 0.5 MEUR (HFUT). Website:

10 SH2IFT The SH2IFT project shall increase competence within safety of hydrogen technology, especially focusing on consequences of handling and use of large volumes and within closed and semiclosed environments and in maritime transport. The project will both develop new models, perform large-scale fire and explosion experiments, and provide guidelines for use of hydrogen in industry and transport. Research partners: SINTEF Materials and Chemistry (SMC), SINTEF Energy (SER), Norwegian University of Science and Technology (NTNU), The Institute of Transport Economics (TØI), RISE Fire Research (RFR), Christian Michelsen Research (CMR): Gexcon and Prototech.

11 SH2IFT Gexcon Laboratories to perform experiments to investigate the consequences of BLEVES (boiling liquid expanding vapour explosion) involving LH 2 (liquid hydrogen) and RPT (rapid phase transition) from LH 2 spills on water. Gexcon R&Dto identify knowledge gaps and evaluate consequence model performance for scenarios involving GH 2 (gaseous hydrogen), simulate experiments from the project and suggest/implement model improvements. Source: Linde

12 Initiatives on hydrogen safety PRESLHYand ENABLEH2:Gexcon R&D is represented in the advisory boards of two projects funded by the European Commission: Pre-normative Research for Safe Use of Liquid Hydrogen (PRESLHY: coordinated by Karlsruhe Institute of Technology (KIT). ENABLingcryogEnicHydrogen based CO2 free air transport (ENABLEH2) coordinated by Cranfield University. Cooperation with MSc-student from the Western Norway University of Applied Sciences/Norwegian Maritime Authority to identify knowledge gaps related to use of hydrogen on marine vessels. Identify scenarios/issues (liquid vs. pressurized hydrogen, etc.) and evaluate modelling capabilities of FLACS.

13 On-going R&D projects DEMO 2000 AIRRE: Assessing the Influence of Real Releases on Explosions, Demo 2000 funding approved by RCN. Sponsored by Engie, Total and Shell, INERIS contributes with inkind funding (measurements). Experiments by GL Industrial Services UK Ltd. (subsidiary DNV GL). Experimental campaign has started; 2 tests performed. Approx. 100 kg/s natural gas releases with delayed ignition.

14 On-going R&D projects Capacity lift for tunnel safety : a Research-based Regional Innovation (FORREGION) project coordinated by University of Stavanger. Literature study on validation cases relevant for accident scenarios in tunnels. Validation of FLACS and general analysis of CFD as a tool for dimensioning safety systems in tunnels. Simulation of realistic accident scenarios. Statens vegvesen

15 On-going R&D projects Gexcon R&D collaborates with DeconX( on optimizing a disinfection system based on hydrogen peroxide, partly funded by RCN through the BIA (User-driven Research based Innovation) program. Part of the coordinated efforts to implement a general framework for modelling particle-laden flows and droplet-laden flows. Implemented the Algebraic Slip Model (ASM), chosen for its computational efficiency, the extensive literature and validated methodologies to account for particle deposition in indoor applications. Integration of ASM with FLACS Fire for water curtain/deluge modelling in progress, planned integration with FLACS DustEx.

16 On-going R&D projects PhD Maryam (Industry PhD RCN): Modelling dust explosions in the process industries: fundamental improvements to the modelling of particle-laden flow and flame propagation in dust clouds. PhD Anna-Lena (Industry PhD RCN): Parameter optimization for the improved modelling of industrial scale explosions: develop reliable and efficient methods of optimizing sub-grid model parameters of CFD models used for process safety computations.

17 Outline Background and news from the department Overview of on-going R&D projects Initiatives related to hydrogen safety Other initiatives Flacs3 development

18 Updated physics models JIP MEASURE ( ), sponsored by Statoil, Total, ExxonMobil, Engie, BP and DNV GL, experimental campaign conducted in cooperation with Shell, led to fundamental changes to turbulence and combustion models in Flacs2. New physics models now integrated in the Flacs3 solver.

19 What is Flacs3? pre-processor PDR pre-processor & solver post-processor FLACS package current version 10.7r2 CASD 4 Flacs Flowvis 5 Porcalc 2 Flacs 3.0 Flacs3 will replace Flacs2 (current version Flacs2.5.6). Flacs3 is the next generation Flacs CFD solver: significantly refactored code, modular structure, possible to apply static/adaptive mesh refinement, MPI parallellized, etc.

20 Development of physics models Continuous development of the physics models in Flacs3 since JIP MEASURE was finalized in March 2017: Wall-distance calculation (input to new turbulence model) improved. Validation and verification of the new model for dispersion scenarios. Buoyancy correction implemented. Source term linearization corrected. Turbulence production limiters updated values. Corrections to the transport equation for flame folding. DDT probability prediction and radiation modelling functionality included.

21 Development of physics models Changed results optimized model parameters from last JIP MEASURE release invalid! Automated re-optimization of the improved model system now on-going, together with validation against key experiments from Gexcon s database.

22 Planned releases to be presented in more detail later!

23 Questions?

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