Detail publikačního výsledku

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

KUDLÁČEK, P.; NOVOTNÝ, P.; VACULA, J.

Originální název

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

Anglický název

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

Druh

Stať ve sborníku mimo WoS a Scopus

Originální abstrakt

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.

Anglický abstrakt

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.

Klíčová slova

Turbocharger; friction losses; rotor fluid interaction; shape modification

Klíčová slova v angličtině

Turbocharger; friction losses; rotor fluid interaction; shape modification

Autoři

KUDLÁČEK, P.; NOVOTNÝ, P.; VACULA, J.

Rok RIV

2023

Vydáno

09.09.2022

Nakladatel

Slovak University of Technology in Bratislava, Faculty of Mechanical Engineering

Místo

Bratislava

ISBN

978-80-227-5215-2

Kniha

Scientific Proceedings KOKA 2022

Strany od

97

Strany do

104

Strany počet

7

Plný text v Digitální knihovně

http://hdl.handle.net/

BibTex

@inproceedings{BUT179955,
  author="Petr {Kudláček} and Pavel {Novotný} and Jiří {Vacula}",
  title="Experimental Verification of the Effect  of Rotor Design Changes on the Mechanical Losses",
  booktitle="Scientific Proceedings KOKA 2022",
  year="2022",
  number="1",
  pages="97--104",
  publisher="Slovak University of Technology in Bratislava, Faculty of Mechanical Engineering",
  address="Bratislava",
  isbn="978-80-227-5215-2"
}