Hanyang University

Turbomachinery Laboratory

Department of Mechanical Engineering

   Join the Dream Team! (Graduate Research Assistant Positions): Lab Intro to New Students

Contact: E-mail) kryu@hanyang.ac.kr, Office) +82-31-400-5242 (Dr. Keun Ryu, Lab. Director)

Last revised: Mar. 12, 2020

DME6021: Rotordynamics and Lubrication Theory for Turbomachinery

1. Class information
  • Class Year and semester: 2013, FALL semester
  • Course No. : DME6021
  • Course title: Rotordynamics and Lubrication Theory for Turbomachinery
  • Credit-Lecture Hour-Practice Training: 3.00-3.00-0.00
  • Course outline: One Three-hour lecture/week
  • Organizing Department: Mechanical Design Engineering (Graduate School; Seoul)

2. Instructor information
  • Name: Dr. Keun Ryu
  • Department: Mechanical Design Engineering
  • Email: kryu@hanyang.ac.kr
  • Web: http://turbolab.hanyang.ac.kr/DME6021.html

  • Office hours: By scheduled appointment (E-mail in advance required)
  • About office hours: This is to encourage individual interaction between the students and the instructor. Students should prepare by organizing questions in advance.

3. Course objective
  To provide the fundamental and practical theory and knowledge on rotordynamics and lubrication theory for fluid film bearings/seals/dampers and seals.

4. Course Description:
  The class will introduce fundamental principles and classical theory of modern turbomachinery rotordynamics and novel application. This class will also introduce the important principles and modern theory of hydrodynamic lubrication for novel fluid film bearings/seals/dampers. The instructor will teach the following topics: Classical Machinery Vibration Theory and Application; Introduction to Rotordynamics; Rotordynamic Instability; Classic Lubrication Theroy; Bearings, Seals, and Their Rotordynamic Effects; and Computer Modeling Rotordynamics.
Prerequisites: Vibrations, Fluid Dynamics, Dynamics

5. References: ALL Available in Hanyang University Library
  - Rotordynamics of Turbomachinery, J. Vance, Wiley, 1988, ISBN-10: 0471802581, ISBN-13: 978-0471802587

  - Machinery Vibration and Rotordynamics, John M. Vance, Fouad Y. Zeidan, Brian Murphy, Wiley, 2010, ISBN-10: 0471462136, ISBN-13: 978-0471462132
  - Turbomachinery Rotordynamics: Phenomena, Modeling, and Analysis, D. Childs, Wiley, 1993, ISBN-10: 047153840X, ISBN-13: 978-0471538400
  - Turbomachinery Rotordynamics with Case Studies, D. Childs, Minter Spring, 2013, ISBN-10: 0615852726, ISBN-13: 978-0615852720
  - Modern Lubrication Theory, L. San Andres, Texas A&M University Digital Library, 2010

  - Selected Technical papers: SEE Reading assignments below

6. Grading
Homework (30%), Mid-term Exam (30%), Final Exam (30%), Attendance (5%), Class participation (5%)
Attendance to the lectures is a must for success.

7. Lecture material and topics

• Week 1 (09/02/2013)
  Introduction to the class

• Week 2 (09/09/2013)
  Introduction to Rotordynamics for Turbomachinery

• Week 3 (09/16/2013)
  Introduction to Fluid Film Bearings/Seals/Dampers

•Week 4 (09/23/2013)

• Week 5 (09/30/2013)

  Mid-term exam

• Week 9 (10/28/2013)

• Assignments

  Reading Assignment 2 (Due: 09/16/2013): Fluid film journal bearings
    - Fluid Film Bearing Fundamentals and Failure Analysis (F. Y. Zeidan and B. S. Herbage)
    - Design of Journal Bearings for Rotating Machinery (P. E. Allaire and R. D. Flack)

  Reading Assignment 3 (Due: 09/30/2013): Bearing dynamic force coefficients, Instability of Rotating Machinery
    - Review of the Concept of Dynamic Coefficients for Fluid Film Journal Bearings (J. W. Lund)
    - Self-Excited Vibration in High-Performance Turbomachinery (F. Ehrich and D. Childs): Handout

  Reading Assignment 4 (Due: 10/07/2013): Tilting pad bearings, Squeeze film dampers
    - Tiltig Pad Bearing Design (J. C. Nicholas)
    - Design and Application of Squeeze Film Dampers in Rotating Machinery (F. Y. Zeidan, L. San Andres, and J. M. Vance)

  Reading Assignment 5 (Due: 10/14/2013): Stability of Rotor-Bearing system
    - Rotor-Bearing Stability (E. J. Gunter)
   
  Reading Assignment 6 (Due: 10/21/2013): Annular gas seals
    - Annular Gas Seals and Rotordynamics of Compressors and Turbines (D. W. Childs and J. M. Vance)

  Reading Assignment 7 (Due: 10/28/2013): Seals
    - Sealing in Turbomachinery (R. E. Chupp, R. C. Hendricks, S. B. Lattime, and B. M. Steinetz)

  Reading Assignment 8 (Due: 11/04/2013): Fluid inertial effects
    - Turbulent Hybrid Bearings With Fluid Inertia Effects (L. San Andres)

    - A Bulk-Flow Theory for Turbulence in Lubricant Films (G. G. Hirs)

  Reading Assignment 9 (Due: 11/11/2013): Rotordynamics for SSME Turbopumps

    - The Space Shuttle Main Engine High-Pressure Fuel Turbopump Rotordynamic Instability Problem (D.  Childs)

  Assignment 10 (Due: 10/14/2013): Oil-free technology
    - Technical Seminar: Oil-Free Turbomachinery for Rotorcraft (C. DellaCorte)

  Reading Assignment 11 (Due: 11/18/2013): Effect of Bearings on the Rotordynamic Stability
    - Short Bearing Analysis Applied to Rotor Dynamics. Part 1: Theory  (R. G. Kirk and E. J. Gunter)

    - Short Bearing Analysis Applied to Rotor Dynamics. Part 2: Results of Journal Bearing Reponse (R. G. Kirk and E. J. Gunter)

  Reading Assignment 12 (Due: 11/25/2013): Finite Elements Analysis for Rotordynamics
    - The Dynamics of Rotor-Bearing Systems Using Finite Elements (H. D. Nelson and J. M. McVaugh)