Zobrazeno 1 - 10
of 36
pro vyhledávání: '"Haut, Terry S."'
Autor:
Olivier, Samuel, Haut, Terry S.
We present high-order, finite element-based Second Moment Methods (SMMs) for solving radiation transport problems in two spatial dimensions. We leverage the close connection between the Variable Eddington Factor (VEF) method and SMM to convert existi
Externí odkaz:
http://arxiv.org/abs/2304.07386
Autor:
Olivier, Samuel, Haut, Terry S.
We apply high-order mixed finite element discretization techniques and their associated preconditioned iterative solvers to the Variable Eddington Factor (VEF) equations in two spatial dimensions. The mixed finite element VEF discretizations are coup
Externí odkaz:
http://arxiv.org/abs/2301.04758
We present a family of discretizations for the Variable Eddington Factor (VEF) equations that have high-order accuracy on curved meshes and efficient preconditioned iterative solvers. The VEF discretizations are combined with a high-order Discontinuo
Externí odkaz:
http://arxiv.org/abs/2111.12255
We present a new approach for solving high-order thermal radiative transfer (TRT) using the Variable Eddington Factor (VEF) method (also known as quasidiffusion). Our approach leverages the VEF equations, which consist of the first and second moments
Externí odkaz:
http://arxiv.org/abs/2104.07826
Autor:
McClarren, Ryan G., Haut, Terry S.
Publikováno v:
Journal of Computational Physics, 448:110756, 2021
We present a method for accelerating discrete ordinates radiative transfer calculations for radiative transfer. Our method works with nonlinear positivity fixes, in contrast to most acceleration schemes. The method is based on the dynamic mode decomp
Externí odkaz:
http://arxiv.org/abs/2009.11686
A standard approach to solving the S$_N$ transport equations is to use source iteration with diffusion synthetic acceleration (DSA). Although this approach is widely used and effective on many problems, there remain some practical issues with DSA pre
Externí odkaz:
http://arxiv.org/abs/2001.09196
Autor:
Yee, Ben C., Olivier, Samuel S., Haut, Terry S., Holec, Milan, Tomov, Vladimir Z., Maginot, Peter G.
We present a new flux-fixup approach for arbitrarily high-order discontinuous Galerkin discretizations of the SN transport equation. This approach is sweep-compatible: as the transport sweep is performed, a local quadratic programming (QP) problem is
Externí odkaz:
http://arxiv.org/abs/1910.02918
Autor:
McClarren, Ryan G., Haut, Terry S.
We present a novel acceleration technique for improving the convergence of source iteration for discrete ordinates transport calculations. Our approach uses the idea of the dynamic mode decomposition (DMD) to estimate the slowly decaying modes from s
Externí odkaz:
http://arxiv.org/abs/1812.05241
Publikováno v:
In Journal of Computational Physics 15 January 2023 473
Autor:
McClarren, Ryan G., Haut, Terry S.
Publikováno v:
In Journal of Computational Physics 1 January 2022 448