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류제욱(Jewook Ryu),김수용(SooYong Kim),최승주(SeungJoo Choe),양수석(SooSuk Yang) 한국유체기계학회 2007 유체기계 연구개발 발표회 논문집 Vol.- No.-
This paper reports the progress on the research and development work of the 5㎿ class industrial gas turbine with respect to establishment sufficient technology for the design, manufacturing and testing processes. The objectives of this project target the highest level of the performances of the existing small gas turbine engines with power output 5.25㎿, thermal efficiency 32%, and NOx emission below 25 ppm. This government supported project started middle 2005 and the Concept Definition Phase and Preliminary Design have been completed. The development process is now extended to the final stage of the detailed design where design documentation is preparing and component detail analyses are processing.
김동화(Donghwa Kim),이현(Hyun Lee),류제욱(Jewook Ryu) 대한기계학회 2010 대한기계학회 춘추학술대회 Vol.2010 No.11
Cooled blades and vanes design of the 5㎿ class gas turbine for power generation was performed. Designing the secondary flow system, analyzing the cooled cascade internal and external flow and surveying the heat transfer characteristics were carried out to achieving the cooling performance targets which were designated in each blades and vanes on conceptual design stage. Cooled cascade cooling performance test were used for confirming the reliability of each cooled blades and vanes. In case of the 1<SUP>st</SUP> stage cooled vane, designed values were compared with tested results.
박준철(Juncheol Park),홍성진(Sungjin Hong),Alexander Bograd,류제욱(Jewook Ryu) 한국추진공학회 2010 한국추진공학회 학술대회논문집 Vol.2010 No.11
두산중공업(주)에서 개발 중인 발전용 가스터빈 DGT-5 엔진의 작동 특성을 평가하였다. 다양한 연료 스케쥴과 여러 가지 조합의 bleed valve 개폐 제어에 대한 영향을 분석하기 위한 시험을 통해 시동 특성을 개선하였고, 시동부터 부하운전 전체 작동 영역에서 압축기에서의 불안정 현상 없이 엔진이 안정적으로 작동됨을 확인하였다. 순간적인 부하 변동과 load rejection에 대한 엔진의 동적 거동 분석을 통해 실제 계통 병입 조건에서 급격한 부하변동 시 엔진이 안정적으로 제어될 수 있음을 확인하였다. Operating characteristics of DGT-5 being developed by Doosan Heavy Industries & Construction Co., Ltd. for power generation service was evaluated. Starting behavior was improved by a series of tests to investigate the effect of various fuel schedule and several combination of bleed valve control. The engine showed stable operation without any instability of compressor in the full operating regime covering from start-up to load conditions. If there is a rapid change of load in the condition of synchronization to Grid, the engine can be controlled stably based on the analysis of dynamic responses of the engine to an rapid load change and a sudden load rejection.
서준혁(Junhyuk Seo),이훈(Hoon Lee),이성룡(Sungryong Lee),류제욱(Jewook Ryu) 대한기계학회 2016 대한기계학회 춘추학술대회 Vol.2016 No.12
For modern gas turbine axial compressor, efficiency is most important target of design. Especially for over 200MW class gas turbine, 1 percent improvement of efficiency can benefit millions costs of fuel. To improve the efficiency, in this paper introduce some unique compressor airfoil design which has highly front loaded shape to control profile losses. Also, this airfoil can control the laminar - turbulent transition region in leading edge of airfoil, which causes strong loss reduction. In this paper, geometry parameters that cause the transition is shown and actual loss and efficiency comparison using 2D and 3D CFD analysis is performed.