Hierarchical modelling of turbulence and geometry for fan flows

Zhong-Nan Wang; Paul G. Tucker

doi:10.2514/6.2021-2767

Hierarchical modelling of turbulence and geometry for fan flows

Zhong-Nan Wang, Paul G. Tucker

Metallurgy and Materials

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

81 Downloads (Pure)

Abstract

Flow separations occur in the tip region when the fan is operating at the approach condition. To reduce computational cost without degrading accuracy, the hierarchical modelling approach has been developed to predict such fan flow. This allows both flow and geometry to be treated with various fidelity levels in different zones. To be specific, this is achieved by zonalising Large-Eddy Simulation (LES) in the fan tip region and modelling downstream stators with low-order blade body forces. This approach provides an accurate and economical prediction of separated fan flows in the stage environment. The predicted fan wake shows a fairly well agreement with the hot-wire measurements.

Original language	English
Title of host publication	AIAA Aviation 2021 Forum
Publisher	American Institute of Aeronautics and Astronautics Inc. (AIAA)
Number of pages	11
ISBN (Electronic)	9781624106101
DOIs	https://doi.org/10.2514/6.2021-2767
Publication status	Published - 6 Aug 2021
Event	AIAA AVIATION 2021 Forum - Virtual event Duration: 2 Aug 2021 → 6 Aug 2021

Conference

Conference	AIAA AVIATION 2021 Forum
Period	2/08/21 → 6/08/21

Keywords

Hairpin Vortices
Direct Numerical Simulation
Reynolds Averaged Navier Stokes
Velocity Profiles
Turbomachinery
Turbulence Models
Compressible Flow
Horseshoe Vortex
Fluid Structure Interaction
High Performance Computing

Access to Document

10.2514/6.2021-2767Licence: None: All rights reserved

WangZN2021HierarchicalAccepted author manuscript, 1.9 MBLicence: None: All rights reserved

Cite this

@inproceedings{fd4fa9be110f42a78dd94ddc60d70958,

title = "Hierarchical modelling of turbulence and geometry for fan flows",

abstract = "Flow separations occur in the tip region when the fan is operating at the approach condition. To reduce computational cost without degrading accuracy, the hierarchical modelling approach has been developed to predict such fan flow. This allows both flow and geometry to be treated with various fidelity levels in different zones. To be specific, this is achieved by zonalising Large-Eddy Simulation (LES) in the fan tip region and modelling downstream stators with low-order blade body forces. This approach provides an accurate and economical prediction of separated fan flows in the stage environment. The predicted fan wake shows a fairly well agreement with the hot-wire measurements.",

keywords = "Hairpin Vortices, Direct Numerical Simulation, Reynolds Averaged Navier Stokes, Velocity Profiles, Turbomachinery, Turbulence Models, Compressible Flow, Horseshoe Vortex, Fluid Structure Interaction, High Performance Computing",

author = "Zhong-Nan Wang and Tucker, {Paul G.}",

year = "2021",

month = aug,

day = "6",

doi = "10.2514/6.2021-2767",

language = "English",

booktitle = "AIAA Aviation 2021 Forum",

publisher = "American Institute of Aeronautics and Astronautics Inc. (AIAA)",

address = "United States",

note = "AIAA AVIATION 2021 Forum ; Conference date: 02-08-2021 Through 06-08-2021",

}

TY - GEN

T1 - Hierarchical modelling of turbulence and geometry for fan flows

AU - Wang, Zhong-Nan

AU - Tucker, Paul G.

PY - 2021/8/6

Y1 - 2021/8/6

N2 - Flow separations occur in the tip region when the fan is operating at the approach condition. To reduce computational cost without degrading accuracy, the hierarchical modelling approach has been developed to predict such fan flow. This allows both flow and geometry to be treated with various fidelity levels in different zones. To be specific, this is achieved by zonalising Large-Eddy Simulation (LES) in the fan tip region and modelling downstream stators with low-order blade body forces. This approach provides an accurate and economical prediction of separated fan flows in the stage environment. The predicted fan wake shows a fairly well agreement with the hot-wire measurements.

AB - Flow separations occur in the tip region when the fan is operating at the approach condition. To reduce computational cost without degrading accuracy, the hierarchical modelling approach has been developed to predict such fan flow. This allows both flow and geometry to be treated with various fidelity levels in different zones. To be specific, this is achieved by zonalising Large-Eddy Simulation (LES) in the fan tip region and modelling downstream stators with low-order blade body forces. This approach provides an accurate and economical prediction of separated fan flows in the stage environment. The predicted fan wake shows a fairly well agreement with the hot-wire measurements.

KW - Hairpin Vortices

KW - Direct Numerical Simulation

KW - Reynolds Averaged Navier Stokes

KW - Velocity Profiles

KW - Turbomachinery

KW - Turbulence Models

KW - Compressible Flow

KW - Horseshoe Vortex

KW - Fluid Structure Interaction

KW - High Performance Computing

UR - https://doi.org/10.2514/6.2021-2767.vid

UR - https://arc.aiaa.org/doi/book/10.2514/MAVIAT21

U2 - 10.2514/6.2021-2767

DO - 10.2514/6.2021-2767

M3 - Conference contribution

BT - AIAA Aviation 2021 Forum

PB - American Institute of Aeronautics and Astronautics Inc. (AIAA)

T2 - AIAA AVIATION 2021 Forum

Y2 - 2 August 2021 through 6 August 2021

ER -

Hierarchical modelling of turbulence and geometry for fan flows

Abstract

Conference

Keywords

Access to Document

Fingerprint

Cite this