Detail publikačního výsledku

The effective computational model of the hydrodynamics journal floating ring bearing for simulations of long transient regimes of turbocharger rotor dynamics

NOVOTNÝ, P.; ŠKARA, P.; HLINÍK, J.

Original Title

The effective computational model of the hydrodynamics journal floating ring bearing for simulations of long transient regimes of turbocharger rotor dynamics

English Title

The effective computational model of the hydrodynamics journal floating ring bearing for simulations of long transient regimes of turbocharger rotor dynamics

Type

WoS Article

Original Abstract

The paper presents an efficient and numerically stable calculation model of a journal plain floating ring bear- ing. The computational model is based on the numerical solution of the Reynolds equation in combination with the analytical description of the resulting variables. This model is used in a virtual turbocharger assembled in multibody systems. This approach allows to effectively solve transient events, such as turbocharger run-up, con- sidering issues of rotor dynamics, tribology of bearings, flows of lubricant in the channels and potentially also gas flow through the sealing system. The model of the bearing includes the influence of the inlet and outlet channels and the non-cylindrical shape of the bearing surfaces. Influence of lubricant and structure temperature changes caused by shear stresses in lubrication film and related changes in the lubricant properties is also considered. The paper also presents the numerical implementation of the computational models and the verification of these models using technical experiments with the turbocharger of a diesel engine.

English abstract

The paper presents an efficient and numerically stable calculation model of a journal plain floating ring bear- ing. The computational model is based on the numerical solution of the Reynolds equation in combination with the analytical description of the resulting variables. This model is used in a virtual turbocharger assembled in multibody systems. This approach allows to effectively solve transient events, such as turbocharger run-up, con- sidering issues of rotor dynamics, tribology of bearings, flows of lubricant in the channels and potentially also gas flow through the sealing system. The model of the bearing includes the influence of the inlet and outlet channels and the non-cylindrical shape of the bearing surfaces. Influence of lubricant and structure temperature changes caused by shear stresses in lubrication film and related changes in the lubricant properties is also considered. The paper also presents the numerical implementation of the computational models and the verification of these models using technical experiments with the turbocharger of a diesel engine.

Keywords

Journal bearing Transient Turbocharger Time domain Rotor dynamics

Key words in English

Journal bearing Transient Turbocharger Time domain Rotor dynamics

Authors

NOVOTNÝ, P.; ŠKARA, P.; HLINÍK, J.

RIV year

2019

Released

17.10.2018

Publisher

Elsevier B.V.

Location

PERGAMON-ELSEVIER SCIENCE LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND

ISBN

0020-7403

Periodical

INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES

Volume

148

Number

2018

State

United Kingdom of Great Britain and Northern Ireland

Pages from

611

Pages to

619

Pages count

9

URL

https://www.sciencedirect.com/science/article/pii/S0020740318321842

Full text in the Digital Library

http://hdl.handle.net/

BibTex

@article{BUT152001,
  author="Pavel {Novotný} and Petr {Škara} and Juraj {Hliník}",
  title="The effective computational model of the hydrodynamics journal floating ring bearing for simulations of long transient regimes of turbocharger rotor dynamics",
  journal="INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES",
  year="2018",
  volume="148",
  number="2018",
  pages="611--619",
  doi="10.1016/j.ijmecsci.2018.09.025",
  issn="0020-7403",
  url="https://www.sciencedirect.com/science/article/pii/S0020740318321842"
}

Documents

Novotny-et-al-2019-TheEffectiveCompModelofHDbearing