Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

A New Type of WENO Scheme for Large Eddy Simulation of Turbomachinery Flows

Version 1 : Received: 11 April 2024 / Approved: 11 April 2024 / Online: 12 April 2024 (08:07:45 CEST)

How to cite: Zhang, S.; Zhong, D.; Wang, H.; Wu, X.; Ge, N. A New Type of WENO Scheme for Large Eddy Simulation of Turbomachinery Flows. Preprints 2024, 2024040830. https://doi.org/10.20944/preprints202404.0830.v1 Zhang, S.; Zhong, D.; Wang, H.; Wu, X.; Ge, N. A New Type of WENO Scheme for Large Eddy Simulation of Turbomachinery Flows. Preprints 2024, 2024040830. https://doi.org/10.20944/preprints202404.0830.v1

Abstract

To conduct high-precision and high-resolution numerical simulation of complex flow structures in turbomachinery, a high-order finite volume weighted essentially non-oscillatory (WENO) scheme for the large eddy simulation (LES) is improved and embedded into the three-dimensional viscous unsteady CFD solver NUAA-Turbo. Firstly, the spectral characteristics and unsteady convergence of the improved WENO scheme are studied. Compared with the classical WENO scheme, the improved WENO scheme has better dissipation and dispersion characteristics and faster convergence speed. Then, the coefficient CW of the Wall-Adapting Local Eddy-viscosity (WALE) model is calibrated by decaying homogeneous isotropic turbulence (DHIT) test case. Finally, the scheme is applied to conduct high-precision LES calculations of turbulent boundary layer flow, supersonic compression corner flow, and low-pressure turbine cascade separation flow. The numerical simulation results show that this WENO scheme has excellent shock wave capture ability and turbulence resolution and can capture more flow field details with less mesh size, greatly reducing the computational cost and laying a foundation for large-scale engineering application of LES.

Keywords

WENO scheme; turbomachinery flow; NUAA-Turbo; large scale engineering application; LES

Subject

Engineering, Aerospace Engineering

Comments (0)

We encourage comments and feedback from a broad range of readers. See criteria for comments and our Diversity statement.

Leave a public comment
Send a private comment to the author(s)
* All users must log in before leaving a comment
Views 0
Downloads 0
Comments 0


×
Alerts
Notify me about updates to this article or when a peer-reviewed version is published.
We use cookies on our website to ensure you get the best experience.
Read more about our cookies here.