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Subgrid modelling for two-dimensional turbulence using neural networks

Journal Article · · Journal of Fluid Mechanics
DOI:https://doi.org/10.1017/jfm.2018.770· OSTI ID:1593570
 [1];  [2];  [3];  [4]
  1. Oklahoma State Univ., Stillwater, OK (United States); Oklahoma State University Stillwater
  2. Oklahoma State Univ., Stillwater, OK (United States)
  3. SINTEF Digital, Trondheim (Norway)
  4. Univ. of Oklahoma, Norman, OK (United States)
Here in this investigation, a data-driven turbulence closure framework is introduced and deployed for the subgrid modelling of Kraichnan turbulence. The novelty of the proposed method lies in the fact that snapshots from high-fidelity numerical data are used to inform artificial neural networks for predicting the turbulence source term through localized grid-resolved information. In particular, our proposed methodology successfully establishes a map between inputs given by stencils of the vorticity and the streamfunction along with information from two well-known eddy-viscosity kernels. Through this we predict the subgrid vorticity forcing in a temporally and spatially dynamic fashion. Our study is both a priori and a posteriori in nature. In the former, we present an extensive hyper-parameter optimization analysis in addition to learning quantification through probability-density-function-based validation of subgrid predictions. In the latter, we analyse the performance of our framework for flow evolution in a classical decaying two-dimensional turbulence test case in the presence of errors related to temporal and spatial discretization. Statistical assessments in the form of angle-averaged kinetic energy spectra demonstrate the promise of the proposed methodology for subgrid quantity inference. In addition, it is also observed that some measure of a posteriori error must be considered during optimal model selection for greater accuracy. The results in this article thus represent a promising development in the formalization of a framework for generation of heuristic-free turbulence closures from data.
Research Organization:
Oklahoma State Univ., Stillwater, OK (United States)
Sponsoring Organization:
NVIDIA Corporation; USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR) (SC-21)
Grant/Contract Number:
SC0019290
OSTI ID:
1593570
Journal Information:
Journal of Fluid Mechanics, Journal Name: Journal of Fluid Mechanics Vol. 858; ISSN 0022-1120
Publisher:
Cambridge University PressCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (16)

Distributed deep reinforcement learning for simulation control journal April 2021
A priori analysis on deep learning of subgrid-scale parameterizations for Kraichnan turbulence journal January 2020
Reynolds-averaged Navier–Stokes equations with explicit data-driven Reynolds stress closure can be ill-conditioned journal April 2019
Sub-grid scale model classification and blending through deep learning journal May 2019
Prediction of turbulent heat transfer using convolutional neural networks journal November 2019
Enabling real-time multi-messenger astrophysics discoveries with deep learning journal October 2019
Sensing the turbulent large-scale motions with their wall signature journal December 2019
Feature engineering and symbolic regression methods for detecting hidden physics from sparse sensor observation data journal January 2020
Artificial neural network approach to large-eddy simulation of compressible isotropic turbulence journal May 2019
Modeling subgrid-scale force and divergence of heat flux of compressible isotropic turbulence by artificial neural network journal October 2019
Towards Data-Driven Dynamic Surrogate Models for Ocean Flow
  • Edeling, Wouter; Crommelin, Daan
  • PASC '19: Platform for Advanced Scientific Computing Conference, Proceedings of the Platform for Advanced Scientific Computing Conference https://doi.org/10.1145/3324989.3325713
conference June 2019
Modal Analysis of Fluid Flows: Applications and Outlook journal March 2020
Sub-grid scale model classification and blending through deep learning text January 2018
Modal Analysis of Fluid Flows: Applications and Outlook preprint January 2019
A priori analysis on deep learning of subgrid-scale parameterizations for Kraichnan turbulence text January 2019
Enabling real-time multi-messenger astrophysics discoveries with deep learning text January 2019

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