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Performance of Under-Resolved, Model-Free LBM Simulations in Turbulent Shear Flows Read chapter Read first chapter

2020 | OriginalPaper | Chapter

Hybrid RANS/LES of an Isolated Engine Nacelle with Crosswind Using an Unstructured CFD Solver

Authors : Marco Burnazzi, Axel Probst, Mathias Steger

Published in: Progress in Hybrid RANS-LES Modelling

Publisher: Springer International Publishing

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Abstract

The present contribution focuses on the high-fidelity scale-resolving simulation of an isolated engine nacelle subjected to strong crosswind. The work, carried out with the DLR TAU code, shows shortcomings of a steady RANS approach in predicting total pressure losses for the transonic partially-separated intake flow and proves the higher accuracy of advanced hybrid RANS/LES methods. In particular, an IDDES approach is combined with a hybrid numerical scheme that assures low-dissipation and low-dispersion errors in the focus area and numerical stability in the surrounding regions (hybrid LD2 scheme). The results are validated by means of theoretical turbulence spectra and experimental integral data.

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previous chapter Application of SST-Based SLA-DDES Formulation to Turbomachinery Flows
next chapter Numerical Investigation of the Flow Around a Simplified Ground Vehicles Using Hybrid RANS/LES Method
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Metadata
Title
Hybrid RANS/LES of an Isolated Engine Nacelle with Crosswind Using an Unstructured CFD Solver
Authors
Marco Burnazzi
Axel Probst
Mathias Steger
Copyright Year
2020
Book
Progress in Hybrid RANS-LES Modelling

Print ISBN: 978-3-030-27606-5

Electronic ISBN: 978-3-030-27607-2

Copyright Year: 2020

DOI
https://doi.org/10.1007/978-3-030-27607-2_28

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