Towards accurate CFD simulation of highly thermally stressed journal bearings in turbochargers: heat transfer, cavitation, and two-phase flow

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F26%3A0198830" target="_blank" >RIV/00216305:26210/26:0198830 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.utad.cz/koka25/" target="_blank" >https://www.utad.cz/koka25/</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Towards accurate CFD simulation of highly thermally stressed journal bearings in turbochargers: heat transfer, cavitation, and two-phase flow

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Towards accurate CFD simulation of highly thermally stressed journal bearings in turbochargers: heat transfer, cavitation, and two-phase flow

Popis výsledku anglicky

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.

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

20301 - Mechanical engineering

Projekt

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Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů