1. Class information
  • Class Year and semester: 2022, Spring semester
  • Course No. : DME9022
  • Course title: Introduction to 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; Class scheduled in ERICA Campus)
  • Class room: Engineering Building No. 5, Room No. 215

2. Instructor information
  • Name: Dr. Keun Ryu
  • Department: Mechanical Design Engineering
  • Email: kryu@hanyang.ac.kr
  • Web: http://turbolab.hanyang.ac.kr/MEE9022.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
This course covers a broad range of topics related with design, application, and performance evaluation of modern machinery systems.

4. Course Description (IC-PBL+)
The following topics will be discussed:
  - Engineering design process and development procedure

 - Design and analysis of rotating components and their supporting elements in electrically assisted high-speed rotating machinery

 - Bearing systems

* Note that this class follows the IC-PBL+ format.

The IC-PBL+ is an "industry-linked, problem-based, project course method" focused on the development of various capabilities required for future leaders of society. As an advanced program of the IC-PBL, the program has been designed to provide students with a graduate-level educational experience to foster "scholars" with initiative, "co-workers" who are capable of performing industry-based research with interdisciplinary thinking, and international "leading researchers" with global researching capabilities.

5. Textbook

1. Mechanical Design of Electric Motors, Wei Tong, CRC Press
2. Design of Aerostatic Bearings, J. W. Powell, The Machinery Publishing Co., LTD

* Free access to Hanyang University Students through the University Library Website

6. References: Available in Hanyang University Library

7. Grading
IC-PBL+ activity 65%(=Weekly presentation 35% + Final report 20% + Final presentation 10%)*, Mid-term exam (15%), Final Exam (15%), Attendance (5%)
　

** Template for weekly task plan: Your group presentation must include the contents in this report.

→ Before each weekly presentation, please turn in your team work (both weekly task plan and the PowerPoint) to Dr. Ryu.

8. Lecture material and topics

• Week 1 (Mar. 08, 2022)

1) Introduction to class and IC-PBL+

http://icpbl-eng.hanyang.ac.kr/?act=info.page&pcode=information

https://www.youtube.com/channel/UCFK_3T-dB3XT7RFR9n7FfuA/videos

2) Group project (Important!)
Refer: Please review the topic below selected from the USA Small Business Innovation Research (SBIR) program.

Your company recently initiates a development project for high speed machining spindles integrating a permanent magnet motor. You have been hired and your boss asks you to provide a feasibility study report which details design, development, and evaluation of a unique high speed precision micro milling machine which will have the capability of being used both in milling (for machining softer metals) and in grinding (for harder metals and ceramics).

Objectives of the project

 - The identification and systematization of phenomena, both mechanical and electromagnetic, that take precedence in high-speed machines.
 - Define the speed limits of permanent magnet machines and correlating those limits with basic parameters of the machines.
 - Electromagnetic, structural (elastic) and rotordynamical modeling of a high-speed permanent magnet machine.

Outline of Final Presentation

At the end of the semester, the final report and presentation must show feasibility or preliminary (or even detailed) design for prototype development from your group topic.

 - High-speed PM machines: applications, trends and limits
 - Electromagnetic modeling of PM machines
 - Structural aspects of PM rotors
 - Rotordynamical aspects of high-speed electrical machines
 - Bearings for high-speed machines
 - Design of the high-speed-spindle motor
 - Conclusions and recommendations

Weekly presentation
The first weekly presentation must show the 1) Problem statement, 2) Goal, 3) Brief introduction, 3) Justification/Motivation, 4) Scope, 5) Tasks, 6) Methodology, and 7) Schedule for the project. Note that this class covers turbomachinery rotating components and their housings ONLY!! That means motors/generators (electric components), controllers, combustion chambers, and recuperators, etc are not our class subjects. Recall Template for weekly task plan.

3) Group formation

4) Reference books and literature review guideline

 - See the above "5. Textbook" and "6. References".

 - Use Hanyang University Library

 - Search archival journals from ASME, AIAA, SAE, and IMechE.

5) Introduction to Mechanical Design

6) What to do for Week 2: Modern application of high speed spindles

• Week 2 (Mar. 15, 2022)

1) Group presentation: Week 1 - Proposal for the project & Team activity

 → Peer Review & discussion
　

2) Prof. Ryu's Selections for Week 2

- Development of an Ultra High Speed Permanent Magnet Synchronous Motor: https://link.springer.com/article/10.1007/s12541-013-0066-2

- An Ultrahigh-Speed, Low Power Electrical Drive System: https://ieeexplore.ieee.org/document/4444617

3) Introduction to Electric Motors: Read your textbook and make a short summary

4) Group presentation: Modern application of high speed spindles

5) What to do for Week 3: Improve the 1st HW report!

• Week 3 (Mar. 22, 2022)

1) Group presentation: Week 2

 → Peer Review & discussion

2) Group activity

Please improve the 1st homework after reading the following articles and books:

- Intelligent Motorized Spindle Technology, Key Technologies and Performance of Motorized Spindle: https://link.springer.com/chapter/10.1007/978-981-15-3328-0_1

- A Review of Key Technologies for High-Speed Motorized Spindles of CNC Machine Tools: https://doi.org/10.3390/machines10020145

- Aerostatic bearings design and analysis with the application to precision engineering: State-of-the-art and future perspectives: https://doi.org/10.1016/j.triboint.2019.02.020

- A review of hydrostatic bearing system: Researches and applications: https://doi.org/10.1177/1687814017730536

- Application of active magnetic bearings in flexible rotordynamic systems – A state-of-the-art review: https://doi.org/10.1016/j.ymssp.2018.01.010

- Magnetic Bearings: Theory, Design, and Application to Rotating Machinery: https://link.springer.com/book/10.1007/978-3-642-00497-1

3) Rotor Design / Shaft Design: Read your textbook and make a short summary

• Week 4 (Mar. 29, 2022)

1) Group presentation: Week 3 - List of references and technical reports/papers  for the group project & Team activity

 → Peer Review & discussion

2) Prof. Ryu's Selections for Week 4

DESIGN AND EVALUATION OF AN ULTRAHIGH SPEED MICRO-MACHINING SPINDLE: https://doi.org/10.1080/10910344.2010.489406

ULTRAHIGH SPEED MICROGRINDING OF DENTAL CERAMICS – TECHNICAL COMMUNICATION: https://doi.org/10.1080/10910344.2010.513594

3) Stator Design / Motor Frame Design: Read your textbook and make a short summary

4) What to do for Week 5

• Week 5 (Apr. 05, 2022)

1) Group presentation: Week 4 - Literature review & Team activity

 → Peer Review & discussion

2) Motor Bearing / Motor Power Losses / Motor Cooling: Read your textbook and make a short summary

3) Prof. Ryu's Selections for Week 5

- Losses in High Speed Permanent Magnet Machines Used in Microturbine Applications: https://doi.org/10.1115/1.2982151

- Thermal analysis of high-speed permanent magnet motor with cooling flows supported on gas foil bearings:

   https://doi.org/10.1007/s12206-015-1148-0 & https://doi.org/10.1007/s12206-015-1149-z

- Cooling of motor spindles—a review: https://doi.org/10.1007/s00170-020-06069-0

3) What to do for Week 6

• Week 6 (Apr. 12, 2022)

1) Intensive Group Activity required: Propose overall design process for group project & Select references and technical reports/papers for your study

2) Motor Vibration and Acoustic Noise / Motor Testing: Read your textbook and make a short summary

3) What to do for Week 7

• Week 7 (Apr. 19)

1) Group presentation: Week 6 - Literature review & Team activity

 → Peer Review & discussion

2) Modeling, Simulation, and Analysis of Electric Motors / Innovative and Advanced Motor Design:  Read your textbook and make a short summary

4) What to do for Week 9

• Week 8 (Apr. 26, 2022)

1) Group presentation: Week 7 - Literature review & Team activity

 → Peer Review & discussion

2) Design of High Speed Spindles

3) Lecture Note: Electric Motor Design 2

4) Review for mid-term exam

• Week 9 (May 03, 2022)

Mid-term exam

• Week 10 (May 10, 2022)

1) Group presentation: Week 9 - Literature review & Team activity

 → Peer Review & discussion

2) Bearings for High Speed Spindles

3) Selection of Materials

4) Lecture Note: High Speed Spindle Design 1

5) What to do for Week 11

• Week 11 (May 17, 2022)

1) Intensive Group Activity required

2) What to do for Week 12

• Weeks 12 & 13 (May 24, 2022)

1) Group presentation: Week 11 - Literature review & Team activity

 → Peer Review & discussion

2) Manufacturing Methods and Control

3) Application of High Speed Bearings

4) Lecture Note: High Speed Spindle  Design 2

• Weeks 14 & 15 (May 31, 2022)