Turbomachinery Laboratory   HOME

Hanyang University Department of Mechanical Engineering

Last revised: Apr. 26, 2024

Research Contracts and Grants as a Principal Investigator since 2013 (Selected)

• Development of High-Efficiency Ultra-Low Temperature Refrigeration Equipment for –100” Using Natural Refrigerants

- Period: Apr. 2024 – Mar. 2028

- Sponsor: Korea Institute of Energy Technology Evaluation and Planning (S. Korea)

• Comprehensive Performance Optimization Review of High-Speed Rotors Based on Specifications and Positions of Next-Generation PE Bearings

- Period: May 2024 – May 2025

- Sponsor: Hyundai Motor Company (S. Korea)

• Hydrostatic Fluid Film Bearing Component Technology for Turbopumps

- Period: Jan. 2024 – Dec. 2024

- Sponsor: Hyundai Rotem (S. Korea)

• Development of High-Performance Upper Engines for Small Launch Vehicles

- Period: Mar. 2022 – Dec. 2025

- Sponsor: Perigee Aerospace (S. Korea)

• Bearing Systems for Air Cycle Machines

- Period: Nov. 2023 – Dec. 2023

- Sponsor: ANOVA (Türkiye)

• Development of New Turbomachinery System

- Period: Mar. 2023 – Feb. 2024

- Sponsor: BorgWarner Emission, Thermal and Turbo Systems (USA)

• Unified Power Turbine and Generator System

- Period: Sep. 2023 – Feb. 2024

- Sponsor: BorgWarner Emission, Thermal and Turbo Systems (USA)

• Gas Foil Bearings for Turbomachinery

- Period: Mar. 2022 – Jun. 2022

- Sponsor: ANOVA (Türkiye)

• Fabrication and Performance Measurement of 3D Printed Oil-free Bearings with High Damping for Turbocompressors
- Period: May 2021 – Oct. 2021
- Sponsor: Sam Turbo  (S. Korea)

• Performance of Additively Manufactured Bearings and Dampers for Methane-Fueled Rocket Engine Turbopumps: Experiments and Predictions
- Period: Mar. 2021 – Feb. 2024
- Sponsor: Ministry of Science and ICT (ministry of the Government of South Korea)

• Rotor-Bearing System Components for BorgWarner Fuel Cell Air Supply Systems
- Period: Jul. 2021 – Oct. 2021
- Sponsor: BorgWarner Turbo Systems (Germany)

• Development of Rotor Bearing Damping Components
- Period: Sep. 2019 – July 2020
- Sponsor: BorgWarner Turbo Systems (USA)

• Design, Performance Evaluation, and Heath Monitoring of Motor-Rotor-Bearing-Seal Systems in Electrically Driven Pumps for Upper Stage Liquid Rocket Engines
- Period: Jul. 2018 – Jun. 2021
- Sponsor: Ministry of Science and ICT (ministry of the Government of South Korea)

• Development of Design and Experimental Performance Evaluation Technology of Cryogenic Fluid Hydrostatic Bearings for Rocket Engine Turbopumps of Reusable Launch Vehicles
- Period: Mar. 2017 – Feb. 2020
- Sponsor: Ministry of Science and ICT (ministry of the Government of South Korea)

• Development of High Speed Bearing Systems for Small Fan-Motors
- Period: Sep. 2016 – Jun. 2019
- Sponsor: LG Electronics (S. Korea)

• Performance Evaluation of Externally Pressurized Gas Bearings
- Period: Jun. 2018 – May 2019
- Sponsor: Samsung Electronics (S. Korea)

• Air Bearing Analysis and Performance Evaluation for Micro Turbo-Generators
- Period: Jun. 2017 – Jun. 2018
- Sponsor: LG Electronics (S. Korea)


• Development of Electric Superchargers for Automotive Internal Combustion Engines
- Period: Oct. 2017 – Jun. 2018
- Sponsor: Hyundai Mobis (S. Korea)

• Development of Porous Air Bearings for High-Speed Rotating Machinery
- Period: May 2013 – Feb. 2017
- Sponsor: Bookwang Advanced Material Technology (S. Korea)

• Development of a Test Rig for Identification of Force Coefficients in a Squeeze Film Damper in Series with a Ball Bearing for High Speed Electric Motors
- Period: Jul. 2016 – Dec. 2016
- Sponsor: G&M Technology, Inc. (S. Korea)

• Development of Oil-Free Turbochargers: Focus on Rotordynamics and Bearing System Development
- Period: May 2013 – Jun. 2016
- Sponsor: BorgWarner Turbo Systems (USA)

• Identification of NVH (Noise, Vibration, and Harshness) Issues for Passenger Cars
- Period: Jun. 2015 – May 2016
- Sponsor: Hyundai Motor Company (S. Korea)

• Development of Oil-free Turbo-compressors
- Period: Nov. 2013 – Jan. 2016
- Sponsor: Hanon Systems Corp. (S. Korea)

Research & Development Projects as a Senior Development Engineers at BorgWarner Before 2013

• Development of Electrically Assisted Turbochargers
- Period: Dec. 2010 – Feb. 2013
- Project description
  ， Developed structural rotordynamic model and conducted linear/nonlinear rotordynamic analysis for electric turbochargers
  ， Designed new floating ring bearing systems for electric turbochargers
  ， Investigated electromagnetic effect on electric turbocharger rotordynamic characteristics

• Development of Oil-free Turbochargers (Work conducted as a Senior Development Engineer at BorgWarner Turbo Systems)
- Period: Dec. 2010 – Feb. 2013
- Project description
 ， Developed test rigs to measure static and dynamic forced performance of journal and thrust gas bearings with notable advances in vibration measurement and built complete fabrication tools for compliant gas foil bearings
  ， Designed and built prototype oil-free turbochargers supported on gas bearings for passenger car application
  ， Investigated adequate thermal management strategies for gas bearing system

• Prediction of Rotordynamic and NVH Performance for Passenger Car Turbochargers
- Period: Dec. 2010 – Feb. 2013
- Project description
  ， Developed computational codes for static and dynamic forced performance of fluid film bearings
  ， Predicted rotordynamic performance of turbochargers supported on (fully and semi) floating ring bearings and ball bearings
  ， Conducted extensive shaft motion tests for next generation turbocharger bearing systems to validate computational models
　

Research & Development Projects as a Graduate Student Before 2011
• Gas Bearings for Oil-Free Turbomachinery

- Period: Aug. 2005 – Aug. 2009
- Project description
 ， Sponsor: TAMU Turbomachinery Research Consortium

 ， MS Thesis: Hybrid Gas Bearings with Controlled Supply Pressure to Eliminate Rotor Vibrations While Crossing System Critical Speeds
 ， Conducted exhaustive rotordynamic tests of flexure pivot tilting pad hybrid gas bearings
  ， Built a controller linking gas bearing feed pressure delivery to shaft speed
  ， Performed extensive impact tests to demonstrate reliability and durability of hybrid gas bearings to intermittent shocks and periodic excitations

• Prediction of Foil Bearing Performance

- Period: Aug. 2007 – Aug. 2009
- Project description
 ， Sponsor: NASA Glenn Research Center

 ， Ph.D Dissertation: Effect of Cooling Flow on the Operation of a Hot Rotor-Gas Foil Bearing System
 ， Conducted comprehensive rotordynamic tests and characterized dynamic forced performance of gas foil bearings
 ， Evaluated static and dynamic load performance of high temperature gas foil bearings
 ， Predicted nonlinear response of gas foil bearing supported rotor

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