Numerical Simulations and Experimental Validation of Squeeze Film Dampers for Aircraft Jet Engines-Reference-Cited by-同舟云学术

Numerical Simulations and Experimental Validation of Squeeze Film Dampers for Aircraft Jet Engines

Published:2024-07-13 Issue:7 Volume:12 Page:253
ISSN:2075-4442
Container-title:Lubricants
language:en
Short-container-title:Lubricants

Author:

Golek Markus¹^ORCID,Gleichner Jakob¹^ORCID,Chatzisavvas Ioannis²,Kohlmann Lukas²,Schmidt Marcus³^ORCID,Reinke Peter³^ORCID,Rienäcker Adrian¹^ORCID

Affiliation:

1. Institute for Powertrain and Vehicle Technology, University of Kassel, Moenchebergstr. 7, 34125 Kassel, Germany

2. MTU Aero Engines AG, Dachauer Str. 665, 80995 Munich, Germany

3. Faculty of Engineering and Health, University of Applied Sciences and Arts Hildesheim/Holzminden/Goettingen, Von-Ossietzky-Straße 99, 37085 Goettingen, Germany

Abstract

Squeeze film dampers are used to reduce vibration in aircraft jet engines supported by rolling element bearings. The underlying physics of the squeeze film dampers has been studied extensively over the past 50 years. However, the research on the SFDs is still ongoing due to the complexity of modeling of several effects such as fluid inertia and the modeling of the piston rings, which are often used to seal SFDs. In this work, a special experimental setup has been designed to validate the numerical models of SFDs. This experimental setup can be used with various SFD geometries (including piston ring seals) and simulate almost all conditions that may occur in an aircraft jet engine. This work also focuses on the inertia forces of the fluid. The hydrodynamic pressure distribution of a detailed 3D-CFD model is compared with the solution of the Reynolds equation including inertia effects. Finally, the simulation results are compared with experimental data and good agreement is observed.

Funder

This research was partially funded by WTD 61/ Bundeswehr

Publisher

MDPI AG

Link

https://www.mdpi.com/2075-4442/12/7/253/pdf

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