Applications MOOSE (software)

1 applications

1.1 bison
1.2 marmot
1.3 falcon
1.4 rat
1.5 relap-7
1.6 pronghorn

applications
bison

bison first moose-based application animal, , finite element-based nuclear fuel performance code applicable variety of fuel forms including light water reactor fuel rods, triso fuel particles, , metallic rod , plate fuel. solves coupled equations of thermomechanics , species diffusion , includes important fuel physics such fission gas release , material property degradation burnup. bison based on moose framework , can therefore efficiently solve problems on either two-dimensional axisymmetric or three-dimensional geometries using standard workstations or large high performance computers. plasticity, irradiation growth, , thermal , irradiation creep models implemented clad materials. models available simulate gap heat transfer, mechanical contact, , evolution of gap/plenum pressure plenum volume, gas temperature, , fission gas addition. bison coupled moose-based mesoscale phase field material property simulation capability.

marmot

marmot finite element-based phase field code modeling irradiation-induced microstructure evolution. marmot predicts effect of radiation damage on microstructure evolution, including void nucleation , growth, bubble growth, grain boundary migration, , gas diffusion , segregation. phase field equations can coupled heat conduction , solid mechanics elk consider effect of temperature , stress gradients on evolution. in addition, marmot calculates effect of microstructure evolution on various bulk material properties, including thermal conductivity , porosity. once bulk properties have been calculated, can passed bison fuel performance simulation. coupling between marmot , bison has been achieved in hybrid code barmot.

falcon

falcon being developed enable simulation of tightly coupled fluid-rock behavior in hydrothermal , engineered geothermal system (egs) reservoirs, targeting dynamics of fracture stimulation, fluid flow, rock deformation, , heat transport in single integrated code, ultimate goal of providing tool can used test viability of egs in united states , worldwide. reliable reservoir performance predictions of egs systems require accurate , robust modeling coupled thermal-hydrological-mechanical processes. conventionally, these types of problems solved using operator splitting methods, coupling subsurface flow , heat transport simulator solid mechanics simulator via input files. falcon eliminates need using operator splitting methods simulate these systems, , scalability of moose supported applications allows simulating these tightly coupled processes @ reservoir scale, allowing examination of system whole (something operator splitting methodologies cannot do).

rat

reactive transport (rat) has been developed solve reactive transport problems in subsurface porous media involves highly nonlinearly coupled physical processes of fluid flow, solute transport, biogeochemical reactions , media-solution interactions. these problems common in various subsurface-engineered systems, such engineered environmental remediation, enhanced geothermal systems , carbon dioxide geological sequestration. currently, physics coupled in rat include: single-phase fluid flow in porous media, advection, dispersion , diffusion transport, aqueous kinetic reaction, aqueous equilibrium reaction, kinetic mineral precipitation/dissolution reaction, , carmen-kozeny porosity-permeability relationship.

relap-7

relap-7 next-generation tool in relap safety/systems analysis application series , based upon moose development , runtime environment framework. relap-7 retain , improve basic analysis capability of relap5. 4 major improvements 1) well-posed seven-equation two-phase flow model (liquid, gas, , interface pressures) versus obsolete ill-posed six-equation flow model (non-physical mixture sound speed) found in relap5; 2) improved numerical approximations resulting in second-order accuracy in both space , time versus first order approximations in relap5; 3) implicit tightly coupled time integration long duration transients, such providing plant behavior full life fuel cycle evaluations; , 4) ability couple multi-dimensional core simulators being developed in other programs (neams, casl, atr lep).

pronghorn

pronghorn developed simulation of gas-cooled pebble-bed vhtr concept. current capabilities of pronghorn include transient , steady coupled porous fluid flow , solid-state heat conduction standard multi-group diffusion model (i.e., fixed-source, criticality, , time-dependent). added capabilities include nonlinear acceleration scheme criticality problems , simple thermal-fluid model prismatic reactor concept. future capabilities include more advanced multi-phase flow type of model (to study thermal boundary layer effects) , radiation transport model. physics can solved in three-dimensional cartesian (x, y, z) or cylindrical (r, q , z) space, precursor , adiabatic thermal feedback models. code has been validated against pbmr400 benchmark problem. using pronghorn, rod ejection simulations have been conducted thermal-fluids/neutronics both pebble-bed , prismatic gas-cooled reactors , simple thermal-neutronics coupled lwr benchmark problems.