5 papers · 1 filter
Realizability-Informed Machine Learning for Turbulence Anisotropy Mappings
Ryley McConkey, Nikhila Kalia, Eugene Yee +1
Within the context of machine learning-based closure mappings for RANS turbulence modelling, physical realizability is often enforced using ad-hoc postprocessing of the predicted a…
Kolmogorov-Arnold Networks for Turbulence Anisotropy Mapping
Nikhila Kalia, Ryley McConkey, Eugene Yee +1
This study evaluates the generalization performance and representation efficiency (parsimony) of a previously introduced Tensor Basis Kolmogorov-Arnold Network (TBKAN) architecture…
Bayesian Optimization of the GEKO Turbulence Model for Predicting Flow Separation Over a Smooth Surface
Nikhila Kalia, Ryley McConkey, Eugene Yee +1
This paper applies Bayesian-optimization-RANS (turbo-RANS) to improve Reynolds-averaged Navier-Stokes (RANS) turbulence models for a converging-diverging channel, a case with adver…
A unified framework for prediction of vortex-induced vibration based on the nonlinear data-driven identification of general wake oscillator modeling
Zhi Cheng, Fue-Sang Lien, Earl H. Dowell
In this paper, we present novel identification strategies to develop a unified framework for vortex-induced vibration (VIV) prediction based on the general semi-empirical wake osci…
turbo-RANS: Straightforward and Efficient Bayesian Optimization of Turbulence Model Coefficients
Ryley McConkey, Nikhila Kalia, Eugene Yee +1
Industrial simulations of turbulent flows often rely on Reynolds-averaged Navier-Stokes (RANS) turbulence models, which contain numerous closure coefficients that need to be calibr…