An improved parallelism scheme for deterministic discrete ordinates transport

An Improved Parallelism Scheme for Deterministic Discrete Ordinates Transport

In this paper we demonstrate techniques for increasing the node-level parallelism of a deterministic discrete ordinates neutral particle transport algorithm on a structured mesh to exploit many-core technologies. Transport calculations form a large part of the computational workload of physical simulations and so good performance is vital for the simulations to complete in reasonable time. We w...

A hybrid scheme of single relaxation time lattice Boltzmann and finite volume methods coupled with discrete ordinates method for combined natural convection and volumetric radiation in an enclosure

This paper is focused on the application of hybrid Single relaxation time lattice Boltzmann and finite volume methods in conjunction with discrete ordinates method to simulate coupled natural convection and volumetric radiation in differentially heated enclosure, filled with an absorbing, emitting and non-scattering gray medium. In this work, the velocity and temperature fields are calculated u...

On discontinuous Galerkin and discrete ordinates approximations for neutron transport equation and the critical eigenvalue

A spatial multigrid iterative method for two-dimensional discrete-ordinates transport problems

A Spatial Multigrid Iterative Method for Two-Dimensional Discrete-Ordinates Transport Problems. (May 2005) Brian David Lansrud, B.S., Texas A&M University; B.S., Texas A&M University Chair of Advisory Committee: Dr. Marvin L. Adams Iterative solutions of the Boltzmann transport equation are computationally intensive. Spatial multigrid methods have led to efficient iterative algorithms for solvi...

Deterministic OpenMP for Race-Free Parallelism

Recent deterministic parallel programming models show promise for their ability to replay computations and reproduce bugs, but they currently require the programmer to adopt restrictive or unfamiliar parallel constructs. Deterministic OpenMP (DOMP) is a new deterministic parallel environment built on the familiar OpenMP framework. By leveraging OpenMP’s block-structured synchronization annotati...