Experimental Verification of the Effect of Rotor Design Changes on the Mechanical Losses

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F22%3APU146200" target="_blank" >RIV/00216305:26210/22:PU146200 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Experimental Verification of the Effect of Rotor Design Changes on the Mechanical Losses

Popis výsledku v původním jazyce

The overall efficiency of high-speed rotating machines depends largely on their mechanical efficiency. Mechanical efficiency is not just a matter of bearing losses, but it includes all interactions of the rotor with its environment. Significant losses occur as a result of rotating surfaces in the operating fluids or as a result of interaction with the rotor seal system. Analytical and empirical descriptions of turbulent or laminar flows around the rotating surfaces were used to estimate the mechanical losses of the turbocharger rotor based on geometric parameters and operational conditions. Based on the knowledge of the influence of each parameter, design changes on the rotor and stator were proposed. The positive effect of design modifications on mechanical losses was experimentally verified by measurements on a test turbocharger. The results demonstrate that a reduction of mechanical losses can be achieved by very simple design modifications, without significant costs.

Název v anglickém jazyce

Experimental Verification of the Effect of Rotor Design Changes on the Mechanical Losses

Popis výsledku anglicky

The overall efficiency of high-speed rotating machines depends largely on their mechanical efficiency. Mechanical efficiency is not just a matter of bearing losses, but it includes all interactions of the rotor with its environment. Significant losses occur as a result of rotating surfaces in the operating fluids or as a result of interaction with the rotor seal system. Analytical and empirical descriptions of turbulent or laminar flows around the rotating surfaces were used to estimate the mechanical losses of the turbocharger rotor based on geometric parameters and operational conditions. Based on the knowledge of the influence of each parameter, design changes on the rotor and stator were proposed. The positive effect of design modifications on mechanical losses was experimentally verified by measurements on a test turbocharger. The results demonstrate that a reduction of mechanical losses can be achieved by very simple design modifications, without significant costs.

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

20301 - Mechanical engineering

Projekt

<a href="/cs/project/TN01000026" target="_blank" >TN01000026: Národní centrum kompetence Josefa Božka pro pozemní dopravní prostředky</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2022

Kód důvěrnosti údajů

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