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나운학(U.H.Nah),조성일(S.I.Cho),신훈(H.Shin),김영상(Y.S.Kim),양승헌(S.H.Yang) 대한기계학회 2003 대한기계학회 춘추학술대회 Vol.2003 No.4
For many years, T/G Supplier has constructed a number of thermal power plants and researched to<br/> improve the performance and the reliability of steam turbine, which are achieved by advances in design and<br/> materials technology. In recent, interest is renewed in advanced steam condition as means of improving<br/> economy of thermal power plant and reducing environmental pollution. Improvements in the maximum power<br/> have been driven by the development of advanced rotor and bucket material and longer last stage bucket.<br/> Improvements in efficiency have been brought through advances in mechanical efficiency and<br/> thermodynamic efficiency. This paper describes a number of new steam path design features introduced to the<br/> steam turbine product. And also this paper describes new design technologies' development, new<br/> technologies' trend and technologies' development for ultra-super critical steam turbine.
권기범(G.B. Kwon),김영상(Y.S. Kim),조상현(S.H. Cho),임홍식(H.S. Im),나운학(U.H. Nah),김현민(H.M. Kim) 한국유체기계학회 2000 유체기계 연구개발 발표회 논문집 Vol.- No.-
High efficient steam turbine stage has been developed with the help of the 3-dimensional design tool. In this stage design, the compound leaned stacking method has been adopted to reduce the secondary flow loss of a turbine passage and to increase the performance efficiency for the turbine nozzles. And the turbine buckets have been designed with the quasi-3-dimensional turbomachinery blade design method. To verify the stage design, therefore, the 3-dimensional numerical simulation of a steam turbine stage was conducted. In this design, CFX-TASCflow was employed to predict the turbulent flow of a steam turbine stage. The analysis was performed in parallel calculation using the HP N4000 8 CPUs machine. The result showed CFX-TASCflow could be used as the 3-dimensional flow analysis tool of steam turbine design.