Auteur Tae Ho Kim
Documents disponibles écrits par cet auteur (12)
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Yong-Bok Lee, Auteur ; Dong-Jin Park, Auteur ; Tae Ho Kim, Auteur ; Kyuho Sim, Auteur |This paper present the development of an oil-free turbocharger (TC) supported on gas foil bearings (GFBs) and its performance evaluation in a test rig driven by a diesel vehicle engine (EG). The rotor-bearing system was designed via a rotordynam[...]
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Yong-Bok Lee, Auteur ; Chang Ho Kim, Auteur ; Tae Ho Kim, Auteur ; Young Tae Kim, Auteur |Metal mesh materials have been used successfully in vibration isolators and bearing dampers due to their superior friction or hysteresis damping mechanism. These materials are formed to metal mesh (or wire mesh) structures in ring-shape by compr[...]
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Luis San Andrés, Auteur ; Ryu, Keun, Auteur ; Tae Ho Kim, Auteur |Established high temperature operation of gas foil bearings (GFB) is of great interest for gas turbine applications. The effects of (high) shaft temperature on the structural stiffness and mechanical energy dissipation parameters of a foil beari[...]
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Luis San Andrés, Auteur ; Thomas Abraham Chirathadam, Auteur ; Tae Ho Kim, Auteur |Engineered metal mesh foil bearings (MMFBs) are a promising low cost bearing technology for oil-free microturbomachinery. In a MMFB, a ring shaped metal mesh provides a soft elastic support to a smooth arcuate foil wrapped around a rotating shaf[...]
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Coda H. Pan, Auteur ; Tae Ho Kim, Auteur ; Joseph J. Rencis, Auteur |The rolling stream trail (RST) model introduces a new formulation of cavitation analysis of an eccentric journal bearing; it is presented as a preferred foundation for cavitation analysis of a journal bearing to replace Floberg’s streamer hypoth[...]
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Tae Ho Kim, Auteur ; Yong-Bok Lee, Auteur ; Young Tae Kim, Auteur ; Kyong Ho Jeong, Auteur |Engineered design of modern efficient turbomachinery based on accurate model predictions is of importance as operating speed and rate power increase. Industrial applications use hydrodynamic fluid film bearings as rotor support elements due to t[...]
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Kyuho Sim, Auteur ; Yong-Bok Lee, Auteur ; Tae Ho Kim, Auteur |Oil-free turbochargers (TCs) will increase the power and efficiency of internal combustion engines, both sparking ignition and compression ignition, without engine oil lubricant feeding or scheduled maintenance. Using gas foil bearings (GFBs) in[...]
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Luis San Andrés, Auteur ; Ryu, Keun, Auteur ; Tae Ho Kim, Auteur |Implementation of gas foil bearings (GFBs) into micro gas turbines requires careful thermal management with accurate measurements verifying model predictions. This two-part paper presents test data and analytical results for a test rotor and GFB[...]
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Luis San Andrés, Auteur ; Ryu, Keun, Auteur ; Tae Ho Kim, Auteur |Implementation of gas foil bearings (GFBs) in microgas turbines relies on physics based computational models anchored to test data. This two-part paper presents test data and analytical results for a test rotor and GFB system operating hot. A co[...]
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Tae Ho Kim, Auteur ; Jin Woo Song, Auteur ; Yong-Bok Lee, Auteur ; Kyuho Sim, Auteur |Identifying thermal characteristics of gas foil bearings (GFBs) provides an insight for successful implementation into high speed oil-free turbomachinery. The paper presents temperature measurements of a bump type GFB floating on a hollow shaft [...]
Article : texte imprimé
Luis San Andrés, Auteur ; Tae Ho Kim, Auteur |The paper introduces a thermohydrodynamic (THD) model for prediction of gas foil bearing (GFB) performance. The model includes thermal energy transport in the gas film region and with cooling gas streams, inner or outer, as in typical rotor-GFBs[...]
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Tae Ho Kim, Auteur ; Luis San Andrés, Auteur |An engineered thermal management is fundamental to the application of gas foil bearings (GFBs) as turboshaft supports in rotorcraft propulsion systems. The paper presents a model for the thermal energy transport in a rotor-GFB system operating a[...]
