1. What are the contributions mentioned in the paper "Moose: a parallel computational framework for coupled systems of nonlinear equations" ?
MOOSE: Multiphysics Object Oriented Simulation Environment, a parallel computational framework targeted at solving these systems, is presented.
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2. What is the physics of a reactor?
It couples highly nonlinear mechanics, heat conduction and species diffusion equations to model fuel behavior in steady state, power-up and operational timeframes.
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3. What is the main preconditioning scheme used by MOOSE?
Three main preconditioning schemes are usually employed by applications: operator split using only block diagonals, lower block triangular using one block Gauss-Seidel like iteration and variable block structure utilizing multiple block Gauss-Seidel iterations.
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4. What is the preconditioning scheme for a two variable (g,h) system?
Forming a fully decoupled M for a two variable (g,h) system amounts to,F(g, h) = [ F1 F2 ] , (8)J ≈ M = [(F1)g 0 0 (F2)h] , (9)where (F1)g and (F2)h can be approximations and linearizations.
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