Richard Sandberg

Integration of Machine Learning and Computational Fluid Dynamics to Develop Turbulence Models for Improved Low-Pressure Turbine Wake Mixing Prediction

HD Akolekar, Y Zhao, RD Sandberg, R Pacciani

Journal article  |  2021  |  Journal of Turbomachinery

This paper presents the development of accurate turbulence closures for low-pressure turbine (LPT) wake mixing prediction by integ..

Large-Eddy Simulations of High Rossby Number Flow in the High-Pressure Compressor Inter-Disk Cavity

Deepak Saini, Richard D Sandberg

Journal article  |  2021  |  Journal of Turbomachinery

Abstract The focus of the present study is to understand the effect of Rayleigh number on a high Rossby number flow..

Data-driven algebraic models of the turbulent Prandtl number for buoyancy-affected flow near a vertical surface

X Xu, A Ooi, RD Sandberg

Journal article  |  2021  |  International Journal of Heat and Mass Transfer

The behaviour of the turbulent Prandtl number (Prt) for buoyancy-affected flows near a vertical surface is investigated as an exte..

High-Fidelity Simulations of a High-Pressure Turbine Vane Subject to Large Disturbances: Effect of Exit Mach Number on Losses

Yaomin Zhao, Richard D Sandberg

Journal article  |  2021  |  JOURNAL OF TURBOMACHINERY-TRANSACTIONS OF THE ASME

We report on a series of highly resolved large-eddy simulations of the LS89 high-pressure turbine (HPT) vane, varying the exit Mac..

Inferring empirical wall pressure spectral models with Gene Expression Programming

Joachim Dominique, Julien Christophe, Christophe Schram, Richard D Sandberg

Journal article  |  2021  |  JOURNAL OF SOUND AND VIBRATION

This paper presents a new data-driven approach for the establishment of empirical models describing turbulent boundary layer wall-..

Stability characteristics of different aerofoil flows at Re-c=150, 000 and the implications for aerofoil self-noise

Hao Wu, Richard D Sandberg, Stephane Moreau

Journal article  |  2021  |  JOURNAL OF SOUND AND VIBRATION

Three compressible-flow direct numerical simulations (DNS) of aerofoils were conducted at a chord based Reynolds number of Rec=150..

High-Fidelity Simulations of Multi-Jet Impingement Cooling Flows

J Javier Otero-Perez, Richard D Sandberg, Satoshi Mizukami, Koichi Tanimoto

Journal article  |  2021  |  JOURNAL OF TURBOMACHINERY-TRANSACTIONS OF THE ASME

This article shows the first parametric study on turbulent multi-jet impingement cooling flows using large-eddy simulations (LES)...

Transition Modeling for Low Pressure Turbines Using Computational Fluid Dynamics Driven Machine Learning

Harshal D Akolekar, Fabian Waschkowski, Yaomin Zhao, Roberto Pacciani, Richard D Sandberg

Journal article  |  2021  |  ENERGIES

Existing Reynolds Averaged Navier–Stokes-based transition models do not accurately predict separation induced transition for low p..

RANS predictions of trailing-edge slot flows using heat-flux closures developed with CFD-driven machine learning

Chitrarth Lav, Ali Haghiri, Richard Sandberg

Journal article  |  2021  |  Journal of the Global Power and Propulsion Society

Accurate prediction of the wall temperature downstream of the trailing-edge slot is crucial to designing turbine blades that can w..

Two Dimensional Analysis of Hybrid Spectral/Finite Difference Schemes for Linearized Compressible Navier-Stokes Equations

Raynold Tan, Andrew Ooi, Richard D Sandberg

Journal article  |  2021  |  JOURNAL OF SCIENTIFIC COMPUTING

This study seeks to compare different combinations of spatial dicretization methods under a coupled spatial temporal framework in ..