A computational fluid dynamics investigation of the segmented integral squeeze film damper

¹ VŠB-Technical University of Ostrava, IT4Innovations National Supercomputing Center, 70833 Ostrava-Poruba, Czech Republic inner end seal clearance
² VŠB-Technical University of Ostrava, Department of Applied Mechanics, 70833 Ostrava-Poruba, Czech Republic
³ Institute of Thermomechanics of the CAS, v. v. i., Department of Dynamics and Vibration, 18200 Prague, Czech Republic
⁴ Doosan Škoda Power s.r.o., Department of Measurement & Diagnostics, 30128 Pilsen, Czech Republic

^* Corresponding author: petr.ferfecki@vsb.cz

Abstract

Rotor vibration attenuation is achieved with damping devices which work on different, often mutually coupled, physical principles. Squeeze film dampers are damping devices that have been widely used in rotordynamic applications. A new concept of a 5-segmented integral squeeze film damper, in which a flexure pivot tilting pad journal bearing is integrated, was investigated. The damper is studied for the eccentric position between the outer and inner ring of the squeeze film land. The ANSYS CFX software was used for solving the pressure and velocity distribution. The development of the complex three-dimensional computational fluid dynamics model of the squeeze film damper, learning more about the effect of the forces in the damper, and the knowledge about the behaviour of the flow are the principal contributions of this article.