Systems of coupled, nonlinear partial differential equations (PDEs) often arise in simulation
of nuclear processes. MOOSE: Multiphysics Object Oriented Simulation Environment, a …

We present a new approach for the k-eigenvalue problem using a combination of classical
power iteration and the Jacobian-free Newton-Krylov (JFNK) method. The method poses the …

We have developed a tightly coupled multiphysics simulation tool for the pebble bed reactor
(PBR) concept, a specific type of very high temperature gas-cooled reactor. The simulation …

The application of the time-dependent 3-D discrete-ordinates neutron transport code TORT-
TD to HTGR of pebble bed type and its coupling with the 3-D thermal-hydraulic code …

A three-dimensional thermal-hydraulic code called TH3D is being developed at the Institute
of Nuclear Technology and Energy Systems (IKE), University of Stuttgart. The objective of …

Scientists at the German AVR pebble bed nuclear reactor discovered that the surface
temperature of some of the pebbles in the AVR core were at least 200K higher than …

ABSTRACT The Idaho National Laboratory (INL) Very High Temperature Reactor (VHTR)
Technology Development Office (TDO) Methods Core Simulation group led the construction …

This paper is the second part of a two part sequence on multiphysics algorithms and
software. The first [1] focused on the algorithms; this part treats the multiphysics software …

MELCOR is an integrated thermal hydraulics, accident progression, and source term code
for reactor safety analysis that has been developed at Sandia National Laboratories for the …

A precise thermal–hydraulics model is of great importance for develo** more effective
designs of High Temperature Gas Cooled Reactors (HTGR). Recently, several …