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Evaluation of a Near-Wall-Modeled Large Eddy Lattice Boltzmann Method for the Analysis of Complex Flows Relevant to IC Engines

Haussmann, Marc and Ries, Florian and Jeppener-Haltenhoff, Jonathan B. and Li, Yongxiang and Schmidt, Marius and Welch, Cooper and Illmann, Lars and Böhm, Benjamin and Nirschl, Hermann and Krause, Mathias J. and Sadiki, Amsini (2020):
Evaluation of a Near-Wall-Modeled Large Eddy Lattice Boltzmann Method for the Analysis of Complex Flows Relevant to IC Engines.
In: Computation, 8 (2), MDPI, ISSN 2079-3197,
DOI: 10.25534/tuprints-00013372,
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Item Type: Article
Origin: Secondary publication via sponsored Golden Open Access
Title: Evaluation of a Near-Wall-Modeled Large Eddy Lattice Boltzmann Method for the Analysis of Complex Flows Relevant to IC Engines
Language: English
Abstract:

In this paper, we compare the capabilities of two open source near-wall-modeled large eddy simulation (NWM-LES) approaches regarding prediction accuracy, computational costs and ease of use to predict complex turbulent flows relevant to internal combustion (IC) engines. The applied open source tools are the commonly used OpenFOAM, based on the finite volume method (FVM), and OpenLB, an implementation of the lattice Boltzmann method (LBM). The near-wall region is modeled by the Musker equation coupled to a van Driest damped Smagorinsky-Lilly sub-grid scale model to decrease the required mesh resolution. The results of both frameworks are compared to a stationary engine flow bench experiment by means of particle image velocimetry (PIV). The validation covers a detailed error analysis using time-averaged and root mean square (RMS) velocity fields. Grid studies are performed to examine the performance of the two solvers. In addition, the differences in the processes of grid generation are highlighted. The performance results show that the OpenLB approach is on average 32 times faster than the OpenFOAM implementation for the tested configurations. This indicates the potential of LBM for the simulation of IC engine-relevant complex turbulent flows using NWM-LES with computationally economic costs.

Journal or Publication Title: Computation
Journal volume: 8
Number: 2
Publisher: MDPI
Classification DDC: 600 Technik, Medizin, angewandte Wissenschaften > 600 Technik
Divisions: 16 Department of Mechanical Engineering > Institute for Energy and Power Plant Technology (EKT)
Date Deposited: 25 Aug 2020 14:02
Last Modified: 25 Aug 2020 14:26
DOI: 10.25534/tuprints-00013372
Official URL: https://doi.org/10.3390/computation8020043
URN: urn:nbn:de:tuda-tuprints-133726
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/13372
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