Publication detail
Towards accurate CFD simulation of highly thermally stressed journal bearings in turbochargers: heat transfer, cavitation, and two-phase flow
NOVOTNÝ, P. VACULA, J. KOCMAN, F. KRMÍČEK, A.
English title
Towards accurate CFD simulation of highly thermally stressed journal bearings in turbochargers: heat transfer, cavitation, and two-phase flow
Type
article in a collection out of WoS and Scopus
Language
en
Original abstract
This paper presents a high-accurate CFD model of a hydrodynamic journal bearing designed for high-speed turbocharger applications. The simulation includes two-phase flow (oil–air mixture), cavitation effects, and conjugate heat transfer to capture the complex thermo-fluid interactions within the bearing. A structured 3D mesh with over 8 million cells resolves critical thin-film regions and thermal gradients across the shaft and housing. The model predicts pressure distribution, temperature fields, and cavitation zones with high spatial accuracy. The disadvantages are high computational complexity, difficult calibration and limited applicability for fast design iterations.
English abstract
This paper presents a high-accurate CFD model of a hydrodynamic journal bearing designed for high-speed turbocharger applications. The simulation includes two-phase flow (oil–air mixture), cavitation effects, and conjugate heat transfer to capture the complex thermo-fluid interactions within the bearing. A structured 3D mesh with over 8 million cells resolves critical thin-film regions and thermal gradients across the shaft and housing. The model predicts pressure distribution, temperature fields, and cavitation zones with high spatial accuracy. The disadvantages are high computational complexity, difficult calibration and limited applicability for fast design iterations.
Keywords in English
hydrodynamic bearing; CFD; CHT; two-phase fluid; cavitation
Released
04.09.2025
Publisher
MENDELU, Faculty of AgriSciences, Department of Technology and Automobile Transport
Location
Brno
ISBN
978-80-7701-051-1
Book
KOKA 2025
Edition number
1
Pages from–to
161–167
Pages count
8
BIBTEX
@inproceedings{BUT198830,
author="Pavel {Novotný} and Jiří {Vacula} and František {Kocman} and Antonín {Krmíček},
title="Towards accurate CFD simulation of highly thermally stressed journal bearings in turbochargers: heat transfer, cavitation, and two-phase flow",
booktitle="KOKA 2025",
year="2025",
month="September",
pages="161--167",
publisher="MENDELU, Faculty of AgriSciences, Department of Technology and Automobile Transport",
address="Brno",
isbn="978-80-7701-051-1"
}