Detail publikačního výsledku

Investigating the Effect of Rotor Design Changes on Mechanical Losses Due to Rotor-Fluid Interaction

KUDLÁČEK, P.; NOVOTNÝ, P.; VACULA, J.; KOCMAN, F.

Original Title

Investigating the Effect of Rotor Design Changes on Mechanical Losses Due to Rotor-Fluid Interaction

English Title

Investigating the Effect of Rotor Design Changes on Mechanical Losses Due to Rotor-Fluid Interaction

Type

Scopus Article

Original Abstract

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 includes all interactions of the rotor with the environment. Analytical and empirical descriptions of turbulent or laminar flow around rotating surfaces have been used to estimate the mechanical losses of a turbocharger rotor based on geometric parameters and operating conditions. Based on the knowledge of the effect of each parameter, design changes to the rotor were proposed. The positive effect of simple design modifications on mechanical losses was experimentally verified by measurements on a test turbocharger.

English abstract

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 includes all interactions of the rotor with the environment. Analytical and empirical descriptions of turbulent or laminar flow around rotating surfaces have been used to estimate the mechanical losses of a turbocharger rotor based on geometric parameters and operating conditions. Based on the knowledge of the effect of each parameter, design changes to the rotor were proposed. The positive effect of simple design modifications on mechanical losses was experimentally verified by measurements on a test turbocharger.

Keywords

Turbocharger; rotor fluid interaction; mechanical efficiency; shape modification; friction losses

Key words in English

Turbocharger; rotor fluid interaction; mechanical efficiency; shape modification; friction losses

Authors

KUDLÁČEK, P.; NOVOTNÝ, P.; VACULA, J.; KOCMAN, F.

RIV year

2023

Released

18.11.2022

Publisher

Faculty of Mechanical Engineering of the Slovak University of Technology in Bratislava

Location

Bratislava

ISBN

2450-5471

Periodical

Journal of Mechanical Engineering - Strojnícky časopis

Volume

72

Number

03

State

Slovak Republic

Pages from

71

Pages to

80

Pages count

10

URL

https://sciendo.com/article/10.2478/scjme-2022-0042

Full text in the Digital Library

http://hdl.handle.net/

BibTex

@article{BUT179999,
  author="Petr {Kudláček} and Pavel {Novotný} and Jiří {Vacula} and František {Kocman}",
  title="Investigating the Effect of Rotor Design Changes on Mechanical Losses Due to Rotor-Fluid Interaction",
  journal="Journal of Mechanical Engineering - Strojnícky časopis",
  year="2022",
  volume="72",
  number="03",
  pages="71--80",
  doi="10.2478/scjme-2022-0042",
  issn="2450-5471",
  url="https://sciendo.com/article/10.2478/scjme-2022-0042"
}