Jeff Gomes Applied Modelling and Computation Group AMCG Severe Accident Subproject Meeting 14112011 Outline MultiPhysics Software Suite NextGeneration Multiphase Flow Dynamic core synergy between projects within AMCG ID: 201559 Download Presentation
Download Presentation - The PPT/PDF document "Emerging Technologies for FETCH2" is the property of its rightful owner. Permission is granted to download and print the materials on this web site for personal, non-commercial use only, and to display it on your personal computer provided you do not modify the materials and that you retain all copyright notices contained in the materials. By downloading content from our website, you accept the terms of this agreement.
Presentation on theme: "Emerging Technologies for FETCH2"— Presentation transcript:
Slide1
Emerging Technologies for FETCH2
Jeff Gomes
Applied Modelling and Computation Group(AMCG)
Severe Accident Subproject Meeting
14/11/2011
Slide2
Outline
Multi-Physics Software Suite;
Next-Generation Multiphase Flow Dynamic core (synergy between projects within AMCG);
Emerging Multi-Physics Technologies.
Slide3
AMCG: Multi-Physics Software Suite
Fluidity
(Multiphase)
EVENT (Radiation Transpot)
FETCH (coupled Multiphase and RT)
Fluidity-ICOM (CFD, single phase, multi-material)
Fluidity-Multiphase(CMFD)
VGeST (DEM, FEMDEM)
Radiant (RT)
FETCH-2(couples multiphase,RT and structural response)
Legacy
Fissile solutions, porous media matrix, reactors;
Compressible (with phase change) and incompressible flows;
Simple structural mechanics response (i.e., limited stress failure criteria);Quad/Hex finite elements with CV representation of scalar fields (no parallel adaptivity);
Add an
adaptivity
library which performs topological operations on the mesh, and mesh movement, to optimise the size and shape of elements in response to error measures
Working robustly and efficiently in parallel
Also building an adjoint to the model for data assimilation, sensitivity studies and goal-based error estimationMake use of open source solutions for solvers, preconditioners, I/O, visualisation, etc
we are able to perform projection operations to achieve conservative, bounded (etc…) interpolation schemes.
2D: Farrell et al., 2009
3D: Farrell,
Maddison, 2009
Emerging Technologies: Conservative interpolation – crucial for many applications with mesh
adaptivity
and coupled models
Slide12
FEM
Emerging Technologies: Finite/Discrete Element Methods (FEMDEM)
DEM
+
Slide13
Emerging Technologies: Finite/Discrete Element Methods (FEMDEM)
Land-slide and
Idealised coastal defence
Slide14
Emerging Technologies: Finite/Discrete Element Methods (FEMDEM)
Idealised coastal defence
accropode
blocks;
Study of stress-induced fractures for different block designs.
Slide15
One-/Two-way coupling of Fluids and Solids (Capturing Interactions)In Fluidity, solid is treated as fluid (multiphase flow)1 mesh for the domain (fluid), 1 mesh for solid: user-friendly as it is easy to generate the meshes of complex solidsUsage of Conservative Interpolation in order to obtain solid's location on the fluids meshExchange of momentum and location between solids and fluid at each time-stepIntroducing third phase: Air (acting as a surface)
Initial generic chemical modelling framework for geochemistry application (funded by QCCRSC Programme) for oil/gas reservoirs, CO
2
sequestration and storage aquifers (PhD student);
Chemical kinetics and thermodynamic equilibrium;
In order to improve of our understanding of a set of SA phenomenology
we need a sophisticated thermo-chemical model framework
within (or coupled to) FETCH2 with a reliable chemical-kinetics library covering:
Chemical reactions and advanced thermodynamics
(EOS
phase change)
;
Slide20
Back-up Slides
Slide21
Code repository;Automatic and continuous verification & validation;More than 100 verification & validation test-cases for RT;More than 1000 verification & validation test-cases for CFD (including unit-tests);Large number of benchmark tests for the coupled formulation (e.g., TRACY, SILENE, CRAC, SUPO, HTR, Shipping-port reactor and other AIEA –based tests)Full documentation;International training (e.g., B&W, LANL, Y12, open-source community, etc)
