Validation of a zonal hybrid URANS/LES turbulence modeling method for multi-cycle engine flow simulation
A zonal hybridization of the RNG k-e URANS model is proposed for the simulation of turbulent flows in internal combustion engines. The hybrid formulation is able to act as URANS, DES or LES in different zones of the computational domain, which are explicitly set by the user. The resulting model has been implemented in a commercial computational fluid dynamics code and the LES branch of the modified RNG k-e closure has been initially calibrated on a standard homogeneous turbulence box case. Subsequently, the full zonal formulation has been tested on a fixed intake valve geometry, including comparisons with third-party experimental data. The core of the work is represented by a multi-cycle analysis of the TCC-III experimental engine configuration, which has been compared with the experiments and with prior full-LES computational studies. The applicability of the hybrid turbulence model to internal combustion engine flows is demonstrated, and PIV-like flow statistics quantitatively validate the model performance. This study shows a pioneering application of zonal hybrid models in engine-relevant simulation campaigns, emphasizing the relevance of hybrid models for turbulent engine flows.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/14680874
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Supplemental Notes:
- © IMechE 2019.
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Authors:
- Krastev, Vesselin Krassimirov
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0000-0002-1241-2833
- d’Adamo, Alessandro
- Berni, Fabio
- Fontanesi, Stefano
- Publication Date: 2020-4
Language
- English
Media Info
- Media Type: Web
- Features: References;
- Pagination: pp 632-648
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Serial:
- International Journal of Engine Research
- Volume: 21
- Issue Number: 4
- Publisher: Sage Publications, Incorporated
- ISSN: 1468-0874
- EISSN: 20413149
Subject/Index Terms
- TRT Terms: Computer models; Engine cycle; Flow fields; Fluid dynamics; Internal combustion engines; Simulation; Turbulence
- Identifier Terms: Reynolds-Averaged Navier Stokes equations (RANS)
- Subject Areas: Highways; Vehicles and Equipment;
Filing Info
- Accession Number: 01736769
- Record Type: Publication
- Files: TRIS
- Created Date: Apr 22 2020 12:26PM