Freddie D. Witherden

Publication Activity (10 Years)

Years Active: 2013-2024
Publications (10 Years): 47

Top Topics

Adaptive Filtering

Fourier Spectrum

Conservation Laws

Top Venues

J. Comput. Phys.

Comput. Phys. Commun.

J. Sci. Comput.

Publications

Lai Wang, Freddie D. Witherden, Antony Jameson
An efficient GPU-based h-adaptation framework via linear trees for the flux reconstruction method. J. Comput. Phys. 502 (2024)
Semih Akkurt, Freddie D. Witherden, Peter Vincent
Cache Blocking for Flux Reconstruction: Extension to Navier-Stokes Equations and Anti-aliasing. CoRR (2024)
Semih Akkurt, Freddie D. Witherden, Peter E. Vincent
Cache blocking for flux reconstruction: Extension to Navier-Stokes equations and anti-aliasing. Comput. Phys. Commun. 305 (2024)
Tarik Dzanic, Freddie D. Witherden
Positivity-preserving entropy filtering for the ideal magnetohydrodynamics equations. CoRR (2023)
Tarik Dzanic, Will Trojak, Freddie D. Witherden
Bounds preserving temporal integration methods for hyperbolic conservation laws. Comput. Math. Appl. 135 (2023)
Tarik Dzanic, Freddie D. Witherden, Luigi Martinelli
A positivity-preserving and conservative high-order flux reconstruction method for the polyatomic Boltzmann-BGK equation. J. Comput. Phys. 486 (2023)
Tarik Dzanic, Will Trojak, Freddie D. Witherden
On the anti-aliasing properties of entropy filtering for under-resolved turbulent flows. CoRR (2023)
Tarik Dzanic, Freddie D. Witherden
Positivity-Preserving Entropy-Based Adaptive Filtering for Discontinuous Spectral Element Methods. CoRR (2022)
Will Trojak, Rob Watson, Freddie D. Witherden
Hyperbolic diffusion in flux reconstruction: Optimisation through kernel fusion within tensor-product elements. Comput. Phys. Commun. 273 (2022)
Tarik Dzanic, Freddie D. Witherden, Luigi Martinelli
A positivity-preserving and conservative high-order flux reconstruction method for the polyatomic Boltzmann-BGK equation. CoRR (2022)
Miroslav S. Petrov, Todor D. Todorov, Gage S. Walters, David M. Williams, Freddie D. Witherden
Enabling four-dimensional conformal hybrid meshing with cubic pyramids. Numer. Algorithms 91 (2) (2022)
Lai Wang, Will Trojak, Freddie D. Witherden, Antony Jameson
Nonlinear p-multigrid preconditioner for implicit time integration of compressible Navier-Stokes equations. CoRR (2022)
Lai Wang, Will Trojak, Freddie D. Witherden, Antony Jameson
Nonlinear p-Multigrid Preconditioner for Implicit Time Integration of Compressible Navier-Stokes Equations with p-Adaptive Flux Reconstruction. J. Sci. Comput. 93 (3) (2022)
Semih Akkurt, Freddie D. Witherden, Peter E. Vincent
Cache blocking strategies applied to flux reconstruction. Comput. Phys. Commun. 271 (2022)
Tarik Dzanic, Freddie D. Witherden
Positivity-preserving entropy-based adaptive filtering for discontinuous spectral element methods. J. Comput. Phys. 468 (2022)
Tarik Dzanic, Sharath S. Girimaji, Freddie D. Witherden
Partially-averaged Navier-Stokes simulations of turbulence within a high-order flux reconstruction framework. J. Comput. Phys. 456 (2022)
Will Trojak, Rob Watson, Freddie D. Witherden
Hyperbolic Diffusion in Flux Reconstruction: Optimisation through Kernel Fusion within Tensor-Product Elements. CoRR (2021)
Tarik Dzanic, Will Trojak, Freddie D. Witherden
Utilizing Time-Reversibility for Shock Capturing in Nonlinear Hyperbolic Conservation Laws. CoRR (2021)
Miroslav S. Petrov, Todor D. Todorov, Gage S. Walters, David M. Williams, Freddie D. Witherden
Enabling four-dimensional conformal hybrid meshing with cubic pyramids. CoRR (2021)
Tarik Dzanic, Will Trojak, Freddie D. Witherden
Bounds Preserving Temporal Integration Methods for Hyperbolic Conservation Laws. CoRR (2021)
Freddie D. Witherden, Peter E. Vincent
On nodal point sets for flux reconstruction. J. Comput. Appl. Math. 381 (2021)
Freddie D. Witherden
Python at Petascale With PyFR or: How I Learned to Stop Worrying and Love the Snake. Comput. Sci. Eng. 23 (4) (2021)
Will Trojak, Freddie D. Witherden
Inline vector compression for computational physics. Comput. Phys. Commun. 258 (2021)
Will Trojak, Freddie D. Witherden
On Fourier analysis of polynomial multigrid for arbitrary multi-stage cycles. CoRR (2020)
Joshua Romero, Jacob Crabill, Jerry Watkins, Freddie D. Witherden, Antony Jameson
ZEFR: A GPU-accelerated high-order solver for compressible viscous flows using the flux reconstruction method. Comput. Phys. Commun. 250 (2020)
Tarik Dzanic, Will Trojak, Freddie D. Witherden
A Riemann Difference Scheme for Shock Capturing in Discontinuous Finite Element Methods. CoRR (2020)
Cory V. Frontin, Gage S. Walters, Freddie D. Witherden, Carl W. Lee, David M. Williams, David L. Darmofal
Foundations of space-time finite element methods: polytopes, interpolation, and integration. CoRR (2020)
Tarik Dzanic, Karan Shah, Freddie D. Witherden
Fourier Spectrum Discrepancies in Deep Network Generated Images. NeurIPS (2020)
Freddie D. Witherden, Peter E. Vincent
Experiences with OpenCL in PyFR: 2014-Present. IWOCL (2020)
Will Trojak, Freddie D. Witherden
Inline Vector Compression for Computational Physics. CoRR (2020)
Jeremy Morton, Freddie D. Witherden, Mykel J. Kochenderfer
Deep Variational Koopman Models: Inferring Koopman Observations for Uncertainty-Aware Dynamics Modeling and Control. CoRR (2019)
Kevin T. Carlberg, Antony Jameson, Mykel J. Kochenderfer, Jeremy Morton, Liqian Peng, Freddie D. Witherden
Recovering missing CFD data for high-order discretizations using deep neural networks and dynamics learning. J. Comput. Phys. 395 (2019)
Jeremy Morton, Freddie D. Witherden, Mykel J. Kochenderfer
Deep Variational Koopman Models: Inferring Koopman Observations for Uncertainty-Aware Dynamics Modeling and Control. IJCAI (2019)
Jeremy Morton, Freddie D. Witherden, Mykel J. Kochenderfer
Parameter-Conditioned Sequential Generative Modeling of Fluid Flows. CoRR (2019)
Tarik Dzanic, Freddie D. Witherden
Fourier Spectrum Discrepancies in Deep Network Generated Images. CoRR (2019)
Niki A. Loppi, Freddie D. Witherden, Antony Jameson, Peter E. Vincent
Locally adaptive pseudo-time stepping for high-order Flux Reconstruction. J. Comput. Phys. 399 (2019)
Jeremy Morton, Antony Jameson, Mykel J. Kochenderfer, Freddie D. Witherden
Deep Dynamical Modeling and Control of Unsteady Fluid Flows. NeurIPS (2018)
Jeremy Morton, Freddie D. Witherden, Antony Jameson, Mykel J. Kochenderfer
Deep Dynamical Modeling and Control of Unsteady Fluid Flows. CoRR (2018)
Kevin T. Carlberg, Antony Jameson, Mykel J. Kochenderfer, Jeremy Morton, Liqian Peng, Freddie D. Witherden
Recovering missing CFD data for high-order discretizations using deep neural networks and dynamics learning. CoRR (2018)
Jacob Crabill, Freddie D. Witherden, Antony Jameson
A parallel direct cut algorithm for high-order overset methods with application to a spinning golf ball. J. Comput. Phys. 374 (2018)
Niki A. Loppi, Freddie D. Witherden, Antony Jameson, Peter E. Vincent
A high-order cross-platform incompressible Navier-Stokes solver via artificial compressibility with application to a turbulent jet. Comput. Phys. Commun. 233 (2018)
J. Romero, Freddie D. Witherden, Antony Jameson
A Direct Flux Reconstruction Scheme for Advection-Diffusion Problems on Triangular Grids. J. Sci. Comput. 73 (2-3) (2017)
Brian C. Vermeire, Freddie D. Witherden, Peter E. Vincent
On the utility of GPU accelerated high-order methods for unsteady flow simulations: A comparison with industry-standard tools. J. Comput. Phys. 334 (2017)
Freddie D. Witherden, Jin Seok Park, Peter E. Vincent
An Analysis of Solution Point Coordinates for Flux Reconstruction Schemes on Tetrahedral Elements. J. Sci. Comput. 69 (2) (2016)
Bartosz D. Wozniak, Freddie D. Witherden, Francis P. Russell, Peter E. Vincent, Paul H. J. Kelly
GiMMiK - Generating bespoke matrix multiplication kernels for accelerators: Application to high-order Computational Fluid Dynamics. Comput. Phys. Commun. 202 (2016)
Michael Klemm, Freddie D. Witherden, Peter E. Vincent
Using the pyMIC Offload Module in PyFR. CoRR (2016)
Peter E. Vincent, Freddie D. Witherden, Brian C. Vermeire, Jin Seok Park, Arvind Iyer
Towards green aviation with python at petascale. SC (2016)
Freddie D. Witherden, Peter E. Vincent
On the identification of symmetric quadrature rules for finite element methods. Comput. Math. Appl. 69 (10) (2015)
Freddie D. Witherden, Antony M. Farrington, Peter E. Vincent
PyFR: An open source framework for solving advection-diffusion type problems on streaming architectures using the flux reconstruction approach. Comput. Phys. Commun. 185 (11) (2014)
Freddie D. Witherden, Brian C. Vermeire, Peter E. Vincent
Heterogeneous Computing on Mixed Unstructured Grids with PyFR. CoRR (2014)
Freddie D. Witherden, Peter E. Vincent
An Analysis of Solution Point Coordinates for Flux Reconstruction Schemes on Triangular Elements. J. Sci. Comput. 61 (2) (2014)
Freddie D. Witherden, Antony M. Farrington, Peter E. Vincent
PyFR: An Open Source Framework for Solving Advection-Diffusion Type Problems on Streaming Architectures using the Flux Reconstruction Approach. CoRR (2013)