New design of a porous aerostatic bearing with variable permeability

Abstract

Aerostatic bearings provide a beneficial method for controlling rotor vibrations.This work focuses on investigating how the inherent permeability of porous aerostatic bearing can optimize the dynamic stability of rotores they support. The study leverages a 3D computation al fluid dynamics(CFD)using Ansys-CFX.The modelis validated against established the oretical modelsand existingex perimental data,suggesting the model’s potential design principles fornovel vibration control methods.The analysis revealed that distinct permeabilities with in the porous material significantly influence the dynamic be- havior of the bearing supporting a load. A novel approach to controlling rotary vibrations is offered by changing the positioning of cylindrical inserts,which allows for more precise rota-tional alignment and mitigates wear and tear.