Neural networks can be FLOP-efficient integrators of 1D oscillatory integrands

1 code implementation • 9 Apr 2024 • Anshuman Sinha, Spencer H. Bryngelson

We train a feed-forward neural network to compute integrals of highly oscillatory 1D functions.

RoseNNa: A performant, portable library for neural network inference with application to computational fluid dynamics

1 code implementation • 30 Jul 2023 • Ajay Bati, Spencer H. Bryngelson

RoseNNa is a non-invasive, lightweight (1000 lines), and performant tool for neural network inference, with focus on the smaller networks used to augment PDE solvers, like those of CFD, which are typically written in C/C++ or Fortran.

Competitive Physics Informed Networks

1 code implementation • 23 Apr 2022 • Qi Zeng, Yash Kothari, Spencer H. Bryngelson, Florian Schäfer

Neural networks can be trained to solve partial differential equations (PDEs) by using the PDE residual as the loss function.

QBMMlib: A library of quadrature-based moment methods

1 code implementation • 12 Aug 2020 • Spencer H. Bryngelson, Tim Colonius, Rodney O. Fox

QBMMlib is an open source Mathematica package of quadrature-based moment methods and their algorithms.

Computational Physics Fluid Dynamics

Near-surface dynamics of a gas bubble collapsing above a crevice

no code implementations • 15 Dec 2019 • Theresa Trummler, Spencer H. Bryngelson, Kevin Schmidmayer, Steffen J. Schmidt, Tim Colonius, Nikolaus A. Adams

The impact of a collapsing gas bubble above rigid, notched walls is considered.

Fluid Dynamics

Simulation of humpback whale bubble-net feeding models

1 code implementation • 25 Sep 2019 • Spencer H. Bryngelson, Tim Colonius

The acoustic wave behaviors in the spiral interior vary qualitatively with the vocalization frequency and net void fraction.

Fluid Dynamics

MFC: An open-source high-order multi-component, multi-phase, and multi-scale compressible flow solver

1 code implementation • 24 Jul 2019 • Spencer H. Bryngelson, Kevin Schmidmayer, Vedran Coralic, Jomela C. Meng, Kazuki Maeda, Tim Colonius

MFC is an open-source tool for solving multi-component, multi-phase, and bubbly compressible flows.

Computational Physics Fluid Dynamics 76T10, 76T30, 76N15

An assessment of multicomponent flow models and interface capturing schemes for spherical bubble dynamics

1 code implementation • 19 Mar 2019 • Kevin Schmidmayer, Spencer H. Bryngelson, Tim Colonius

We demonstrate the inadequacy of the traditional 5-equation model of Allaire et al. [1] for spherical bubble collapse problems and explain the corresponding advantages of the augmented model of Kapila et al. [2] for representing this phenomenon.

Fluid Dynamics Computational Physics