Labyrinth Seal Effects on Rotor Bearing System Stability.

Abstract

This thesis presents a stability analysis of rotor bearing system operation affected by a single labyrinth seal. Labyrinth seals, primarily intended for leakage control in turbines, have been observed to affect rotor stability in high pressure steam turbines. A small experimental rotor bearing system, existing in the Mechanical Engineering Department, and a compatible labyrinth seal are the subjects of this analysis. Linear analytical models of these rotor bearing and labyrinth seal systems, both isolated and coupled, are developed. Labyrinth seal geometry and pressure variations generate various affects on rotor bearing system stability. These affects can help develop labyrinth seal design criteria directed toward high pressure turbine stability enhancement. (Author)

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1982
Accession Number
ADA116774

Entities

People

  • Anthony John Pavelko

Organizations

  • Air Force Institute of Technology

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Air Force
  • Axial Flow
  • Computer Programming
  • Computer Programs
  • Computer Simulations
  • Computers
  • Design Criteria
  • Differential Equations
  • Engineering
  • Fluid Flow
  • Geometry
  • High Pressure
  • Mechanical Engineering
  • Momentum
  • Plastic Explosives
  • Steam Turbines
  • Turbines

Readers

  • Aerodynamics.
  • Control Systems Engineering.
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).