Fluid dynamics of axial turbomachinery: Blade-and stage-level simulations and models

RD Sandberg, V Michelassi - Annual Review of Fluid Mechanics, 2022 - annualreviews.org
The current generation of axial turbomachines is the culmination of decades of experience,
and detailed understanding of the underlying flow physics has been a key factor for …

Machine-learning for turbulence and heat-flux model development: A review of challenges associated with distinct physical phenomena and progress to date

RD Sandberg, Y Zhao - International Journal of Heat and Fluid Flow, 2022 - Elsevier
This review paper surveys some of the progress made to date in the use of machine learning
(ML) for turbulence and heat transfer modeling. We start by identifying the challenges that …

[HTML][HTML] Feature importance in neural networks as a means of interpretation for data-driven turbulence models

H Mandler, B Weigand - Computers & Fluids, 2023 - Elsevier
This work aims at making the prediction process of neural network-based turbulence models
more transparent. Due to its black-box ingredients, the model's predictions cannot be …

Fast prediction and sensitivity analysis of gas turbine cooling performance using supervised learning approaches

Q Wang, L Yang, K Huang - Energy, 2022 - Elsevier
Fast prediction tools for turbine cooling performance have been demanded by industry for
decades to support the iterative design process and the comprehensive response analysis …

A multi-fidelity machine learning framework to predict wind loads on buildings

G Lamberti, C Gorlé - Journal of Wind Engineering and Industrial …, 2021 - Elsevier
Large-eddy simulations (LES) can provide accurate predictions of wind loads on buildings,
but their high computational cost, and the need to explore all wind directions with a 10° …

Turbulent scalar flux in inclined jets in crossflow: counter gradient transport and deep learning modelling

PM Milani, J Ling, JK Eaton - Journal of Fluid Mechanics, 2021 - cambridge.org
A cylindrical and inclined jet in crossflow is studied under two distinct velocity ratios,, using
highly resolved large eddy simulations. First, an investigation of turbulent scalar mixing …

Optimization of the semi-sphere vortex generator for film cooling using generative adversarial network

Y Wang, W Wang, G Tao, H Li, Y Zheng… - International Journal of …, 2022 - Elsevier
Film cooling has shown great potential in protecting hot section of high-pressure turbine
from melting down. A counter-rotating vortex pair (CVP) is produced downstream of the …

Transition modeling for low pressure turbines using computational fluid dynamics driven machine learning

HD Akolekar, F Waschkowski, Y Zhao, R Pacciani… - Energies, 2021 - mdpi.com
Existing Reynolds Averaged Navier–Stokes-based transition models do not accurately
predict separation induced transition for low pressure turbines. Therefore, in this paper, a …

[HTML][HTML] The current state of high-fidelity simulations for main gas path turbomachinery components and their industrial impact

RD Sandberg, V Michelassi - Flow, Turbulence and Combustion, 2019 - Springer
Over the past two decades high-fidelity simulations have become feasible for most main gas
path turbomachinery components. This paper introduces the key challenges of simulating …

Deep learning method for fast prediction of film cooling performance

Z Li, L Su, F Wen, J Zeng, S Wang, J Zhang - Physics of Fluids, 2022 - pubs.aip.org
This study examines the predictive capability of deep learning method for adiabatic film
cooling effectiveness distribution with variable operating conditions and geometric layouts. A …