Active subspaces of airfoil shape parameterizations

ZJ Grey, PG Constantine - AIAA Journal, 2018 - arc.aiaa.org
Design and optimization benefit from understanding the dependence of a quantity of interest
(eg, a design objective or constraint function) on the design variables. A low-dimensional …

On kernel functions for bi-fidelity Gaussian process regressions

PS Palar, L Parussini, L Bregant, K Shimoyama… - Structural and …, 2023 - Springer
This paper investigates the impact of kernel functions on the accuracy of bi-fidelity Gaussian
process regressions (GPR) for engineering applications. The potential of composite kernel …

Forecasting three-dimensional unsteady multi-phase flow fields in the coal-supercritical water fluidized bed reactor via graph neural networks

Y Hao, X Xie, P Zhao, X Wang, J Ding, R Xie, H Liu - Energy, 2023 - Elsevier
The study of three-dimensional unsteady multi-phase flows inside the coal-supercritical
water fluidized bed (SCWFB) reactor coupled with fluid dynamics, heat transfer and …

[HTML][HTML] On the explainability of machine-learning-assisted turbulence modeling for transonic flows

X He, J Tan, G Rigas, M Vahdati - International Journal of Heat and Fluid …, 2022 - Elsevier
Abstract Machine learning (ML) is a rising and promising tool for Reynolds-Averaged Navier–
Stokes (RANS) turbulence model developments, but its application to industrial flows is …

Transfer learning for flow reconstruction based on multifidelity data

J Kou, C Ning, W Zhang - AIAA Journal, 2022 - arc.aiaa.org
Reduced-order modeling for multifidelity flow reconstruction offers increased accuracy while
saving cost in data generation. The key to obtaining successful multifidelity models lies in …

Optimization of expensive black-box problems via Gradient-enhanced Kriging

L Chen, H Qiu, L Gao, C Jiang, Z Yang - Computer Methods in Applied …, 2020 - Elsevier
This paper explores the use of Gradient-enhanced Kriging for optimization of expensive
black-box design problems, which is not completely limited by the conventional Efficient …

Simulation of supersonic axisymmetric base flow with a data-driven turbulence model

S Heo, Y Yun, M Jeong, S Jee - Aerospace Science and Technology, 2024 - Elsevier
Axisymmetric base flow involves massive flow separation which is challenging for a typical
Reynolds-averaged Navier-Stokes (RANS) turbulence model. Furthermore, a supersonic …

RHEA: an open-source Reproducible Hybrid-architecture flow solver Engineered for Academia

L Jofre Cruanyes, AMA Abdellatif… - Journal of Open …, 2023 - upcommons.upc.edu
The study of complex multiscale flows (Groen et al., 2014), like for example the motion of
small-scale turbulent eddies over large aerodynamic structures (Jofre & Doostan, 2022) …

High-fidelity aeroelastic transonic analysis using higher-order structural models

M Grifò, V Gulizzi, A Milazzo, A Da Ronch… - Composite …, 2023 - Elsevier
A novel computational approach for static aeroelastic analysis of metal and composite wings
in transonic flows is proposed. Static aeroelastic analysis is often performed coupling …

A computational aeroelastic framework based on high-order structural models and high-fidelity aerodynamics

M Grifò, A Da Ronch, I Benedetti - Aerospace Science and Technology, 2023 - Elsevier
A computational framework for high-fidelity static aeroelastic analysis is presented.
Aeroelastic analysis traditionally employs a beam stick representation for the structure and …