Publication detail

Nonlinear Mathematical Model of the Rotor Motion in a Thin Hydrodynamic gap

KRUTIL, J. POCHYLÝ, F. FIALOVÁ, S.

Czech title

Nelineární matematický model kluzného ložiska a hydrodynamické těsnící spáry

English title

Nonlinear Mathematical Model of the Rotor Motion in a Thin Hydrodynamic gap

Type

conference proceedings

Language

en

Original abstract

The article presents two mathematical models of the interaction between a rotating shaft and an incompressible fluid. The mathematical model includes both the journal bearings and the axially traversed hydrodynamic sealing gaps of hydraulic machines. A method is shown for the identification of additional effects of the fluid acting on the rotor of the machine, both for a linear and a non-linear model. The interaction is expressed by matrices of mass, stiffness and damping.

Czech abstract

V článku jsou uvedeny dva matematické modely interakce rotujícího hřídele s nestlačitelnou kapalinou. Matematický model zahrnuje jak kluzná ložiska, tak axiálně protékané hydrodynamické těsnící spáry vodních strojů. Je uvedena metoda identifikace přídavných účinků tekutiny působící na rotor stroje, jak pro lineární, tak nelineární model. Interakce je vyjádřena maticemi hmotnosti, tlumení a tuhosti.

English abstract

The article presents two mathematical models of the interaction between a rotating shaft and an incompressible fluid. The mathematical model includes both the journal bearings and the axially traversed hydrodynamic sealing gaps of hydraulic machines. A method is shown for the identification of additional effects of the fluid acting on the rotor of the machine, both for a linear and a non-linear model. The interaction is expressed by matrices of mass, stiffness and damping.

Keywords in English

CFD modeling, hydrodynamic gap, matrices of mass, stiffness and damping, nonlinear mathematical model.

Released

14.05.2015

Location

Amsterdam The Netherlands

ISBN

ISSN 1307-6892

ISSN

1307-6892

Book

international science index

Pages from–to

305–308

Pages count

4

BIBTEX


@proceedings{BUT114706,
  author="Jaroslav {Krutil} and František {Pochylý} and Simona {Fialová},
  title="Nonlinear Mathematical Model of the Rotor Motion in a Thin Hydrodynamic gap",
  booktitle="international science index",
  year="2015",
  month="May",
  pages="305--308",
  address="Amsterdam The Netherlands",
  isbn="ISSN  1307-6892",
  issn="1307-6892"
}