Browsing by Author "Kim, Daejong"
Now showing items 1-20 of 20
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COMPUTATIONAL MODEL FOR STEADY STATE SIMULATION OF A PLATE-FIN HEAT EXCHANGER
Desai, Ajit Rajesh (2015-12-14)High performance heat transfer devices are critical components in hybrid power generation systems. The design of a Recuperator for 'waste heat recovery' is crucial for reducing the operating cost of a hybrid system. Plate-fin ... -
COMPUTATIONAL MODEL FOR STEADY STATE SIMULATION OF A SOLID OXIDE FUEL CELL (SOFC) PLANAR STACK MODEL UNDERGOING REFORMING PROCESS
Indulkar, Vaibhav Vijay (2018-01-05)Solid Oxide Fuel Cell (SOFC), is a clean and low-pollution technology of generating power of high efficiency. Its applicability for both stationery and transportation power generation systems, adaptability for wide range ... -
Computational Model For Transient And Steady State Analysis Of A 1-dimensional Auto-thermal Reformer
Honavara Prasad, Srikanth (Mechanical Engineering, 2011-03-03)This study presents a 1-dimensional mathematical model of steam reformer to be used with high temperature solid oxide fuel cell (SOFC). Steam reforming (SR) is widely used in industries to produce hydrogen from hydrocarbons. ... -
DESIGN AND EXPERIMENTAL STUDY OF HYDROSTATIC THRUST AIR FOIL BEARING
Song, Myong Sok (2018-05-25)Oil-free bearing technology has several advantages over conventional oil-lubricated bearings. These advantages include high-speed operation, reduced weight, and increased reliability. Consequently, oil-free technology is ... -
DESIGN CONSIDERATION AND STEADY STATE STUDY OF THRUST BEARINGS IN HIGH SPEED SUBSONIC APPLICATIONS
Prabhakar, Arvind (2016-05-10)Thrust bearings are required to perform at high speeds in various turbomachinery applications causing the nature of fluid flow within the bearings to be in high subsonic as well as supersonic regimes. The motivation of ... -
Design principles for large foil bearings based on scaling laws: Analyses and Experiment
Honavara Prasad, Srikanth (2018-12-06)Gas foil bearings are used for supporting high speed turbomachinery systems. They are characterized by complex physical and thermal interactions between the lubricating fluid and the structural elements. Mathematically, ... -
Dynamic Performance Of Offset-preloaded Two Pad Foil Bearings
Yadav, Shrikant Ashok (Mechanical Engineering, 2013-07-22)Commercial application of the air foil bearing (AFB) in microturbomachinary have been acknowledged. Absence of external pressurizing and lubricating system makes them light and compact. Simple construction, low friction ... -
EFFECT OF CENTRIFUGAL FORCE ON THE LOAD CAPACITY OF THRUST GAS BEARING
Haidar, Rakan Mohammed; 0000-0002-2589-0711 (2022-12-12)It has been known for many decades that both rigid and foil thrust bearings are two options in the market for high-speed turbomachinery systems. Their advantages encompass the lower manufacturing cost, the lighter weight, ... -
Experimental Feasibility Study Of Radial Injection Cooling Of Three-pad Radial Air Foil Bearings
Shrestha, Suman K. (Mechanical Engineering, 2012-07-25)Air foil bearings use ambient air as a lubricant allowing environment-friendly operation. When they are designed, installed, and operated properly, air foil bearings are very cost effective and reliable solution to oil-free ... -
Experimental Investigation Of Thermal Behaviour Of Air Foil Bearings
Pandeshwara Sadashiva, Ramesh (Mechanical Engineering, 2011-03-03)Micro-turbo machinery demands gas bearings to ensure compactness, lightweight and extreme temperature operation. Gas bearings with large stiffness and damping, and preferably of low cost, will enable successful commercial ... -
Feasibility Study Of T700 Rotorcraft Engine Rotor Supported By Hybrid Air Foil Bearings
Varrey, Mahesh Kumar (Mechanical Engineering, 2012-04-11)A potential solution towards light weighted and simple structured turbomachinery lies in elimination of oil-lubrication system. These promising benefits of oil-free turbomachinery have demanded extensive research in the ... -
FOIL THRUST BEARING WITH POCKET GROOVES AND TAILORED BUMP STIFFNESS DISTRIBUTION FOR IMPROVED STATIC PERFORMANCE
LaTray, Nguyen Thao; 0000-0002-6116-5162 (2018-12-19)Gas foil thrust bearing is one of few axial bearing options for high speed turbomachinery systems. Its advantages include low cost, light weight, generous allowance for component mis-alignment and runout. However, the ... -
Imbalance Response Of A Four Degree Of Freedom Rigid Rotor Supported By Hybrid Three Pad Air Foil Bearing
Shetty, Prajwal Krishna (Mechanical Engineering, 2011-03-03)Air foil bearings (AFB's) are widely used in small to midsized turbomachinery. They provide safer, cleaner and cheaper bearing operation. They are simple in construction, offer very low drag friction and have very high ... -
Integrated Modeling Approach For Solid Oxide Fuel Cell-based Power Generating System
Ki, Jeongpill (Mechanical Engineering, 2013-07-22)Solid oxide fuel cell (SOFC) systems have been recognized as the most advanced power generation system with the highest thermal efficiency with a compatibility with a wide variety of hydrocarbon fuels, synthetic gas from ... -
Performance Evaluation Of Compliant Foil Seal
Raghuraman, SashidharThe concept of foil bearings has gained large acceptance in the industry and is been applied for various rotating equipment including air cycle machines, cryogenic turbo-expanders, centrifugal compressors and gas turbine ... -
Preliminary Design Of Mesoscale Turbocompressor And Rotordynamics Tests Of Rotor Bearing System
Hossain, Md Saddam (Mechanical Engineering, 2011-10-11)A mesoscale turbocompressor spinning above 500,000 RPM is evolutionary technology for micro turbochargers, turbo blowers, turbo compressors, micro-gas turbines, auxiliary power units, etc for automotive, aerospace, and ... -
ROTORDYNAMIC ENHANCEMENT BY UTILIZING THE CONTROLLED HYDROSTATIC INJECTION OF HYBRID AIR FOIL BEARING
Zamanian Yazdi, Behzad; 0000-0001-7888-0149 (2017-12-14)Air foil bearings (AFBs) are introduced as promising bearings for oil-free turbomachinery applications. Air foil bearing (AFB) technology has made substantial advancement during the past decades and found its applications ... -
Rotordynamic Performance Of A Rotor Supported By Three Pad Hybird Foil Bearings With Controlled Air Injection
Gudemane, Sandesh (Mechanical Engineering, 2014-03-10)Air Foil Bearings have found their place in the commercial applications of turbo machinery. They are cleaner and more reliable at high speeds than their conventional counterparts (Rolling Element Bearings). Low drag ... -
Scaling Laws For Radial Foil Bearings
Honavara Prasad, Srikanth (Aerospace Engineering, 2014-12)The effects of fluid pressurization, structural deformation of the compliant members and heat generation in foil bearings make the design and analysis of foil bearings very complicated. The complex fluid-structural-thermal ... -
Thermal Management Method For Foil Bearings In Turbine Hot Section
Patil, Tejas Devidas (Mechanical Engineering, 2014-03-12)Recently, Air Foil Bearings (AFB) are gaining higher industrial acceptance in micro-turbo machinery. AFB show high speed operating capability and environmental friendly operation in comparison to rolling element bearings. ...