Microturbocharger with air foil bearings for a 100-W class micro power system and improvement of rotordynamic performance

Yong Bok Lee; Yong Suk Kwak; Jin Taek Chung; Kyuho Sim

doi:10.1080/10402004.2011.617900

Microturbocharger with air foil bearings for a 100-W class micro power system and improvement of rotordynamic performance

Yong Bok Lee, Yong Suk Kwak, Jin Taek Chung, Kyuho Sim

Research output: Contribution to journal › Article › peer-review

21 Citations (Scopus)

Abstract

This article presents the experimental investigation of a microturbocharger supported on bump-type air foil bearings (AFBs) for a 100-W power generation. The microturbocharger was designed via thermodynamic cycle analyses as well as rotordynamic analyses and constructed using a centrifugal compressor and turbine with tip diameter of 10 mm. The tests for AFBs at rotating speeds up to 410 krpm driven by air showed a large subsynchronous motion at 100 Hz. However, AFBs with an additional viscoelastic film eliminated the subsynchronous response due to increased damping by the viscoelastic film. The compressor performance was evaluated numerically and experimentally.

Original language	English
Pages (from-to)	939-948
Number of pages	10
Journal	Tribology Transactions
Volume	54
Issue number	6
DOIs	https://doi.org/10.1080/10402004.2011.617900
Publication status	Published - 2011

Keywords

Air Foil Bearing
Micro Power System
Rotordynamics
Viscoelastic Foil Bearing

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Surfaces and Interfaces
Surfaces, Coatings and Films

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10.1080/10402004.2011.617900

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abstract = "This article presents the experimental investigation of a microturbocharger supported on bump-type air foil bearings (AFBs) for a 100-W power generation. The microturbocharger was designed via thermodynamic cycle analyses as well as rotordynamic analyses and constructed using a centrifugal compressor and turbine with tip diameter of 10 mm. The tests for AFBs at rotating speeds up to 410 krpm driven by air showed a large subsynchronous motion at 100 Hz. However, AFBs with an additional viscoelastic film eliminated the subsynchronous response due to increased damping by the viscoelastic film. The compressor performance was evaluated numerically and experimentally.",

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AU - Chung, Jin Taek

AU - Sim, Kyuho

PY - 2011

Y1 - 2011

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AB - This article presents the experimental investigation of a microturbocharger supported on bump-type air foil bearings (AFBs) for a 100-W power generation. The microturbocharger was designed via thermodynamic cycle analyses as well as rotordynamic analyses and constructed using a centrifugal compressor and turbine with tip diameter of 10 mm. The tests for AFBs at rotating speeds up to 410 krpm driven by air showed a large subsynchronous motion at 100 Hz. However, AFBs with an additional viscoelastic film eliminated the subsynchronous response due to increased damping by the viscoelastic film. The compressor performance was evaluated numerically and experimentally.

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KW - Micro Power System

KW - Rotordynamics

KW - Viscoelastic Foil Bearing

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Microturbocharger with air foil bearings for a 100-W class micro power system and improvement of rotordynamic performance

Abstract

Keywords

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