Title page for ETD etd-05122008-005306


Type of Document Master's Thesis
Author Mehta, Rumeet Pradeep
URN etd-05122008-005306
Title Labyrinth Seal Preprocessor and Post-Processor Design and Parametric Study
Degree Master of Science
Department Mechanical Engineering
Advisory Committee
Advisor Name Title
Kirk, R. Gordon Committee Chair
Inman, Daniel J. Committee Member
Kasarda, Mary E. F. Committee Member
Keywords
  • Labyrinth Seal
  • Visual Basic
  • Excel
  • Parametric Study
  • API Survey
Date of Defense 2008-04-30
Availability unrestricted
Abstract
Vibrations caused due to aerodynamic excitation may cause severe limitation to the performance of turbomachines. The force resulting from the non-uniform pressure distribution within the labyrinth cavity is identified as a major source of this excitation. In order to perform rotor dynamic evaluation of rotor-bearing-seal system, accurate prediction of this force is essential.

A visual basic based front-end, for a labyrinth seal analysis program, has been designed herein. In order to accurately predict the excitation force, proper modeling of labyrinth leak path is important. Thus, the front-end developed herein incorporates a leak-path geometric diagram for visual analysis of labyrinth leak path and tooth location. Furthermore, to investigate influence of various operating conditions and gas properties on excitation force (effective cross-coupling stiffness), a parametric study is performed on both the eye seal and the balance piston labyrinth seal.

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