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CAA를 이용한 2D 원형 실린더의 원거리 소음 예측에 관한 연구
김경민(G.M. Kim),박인철(I.C. Park),고영주(Y.J. Go),최종수(J.S. Choi),김병수(B.S. Kim) 한국전산유체공학회 2012 한국전산유체공학회 학술대회논문집 Vol.2012 No.5
The change of a vortex-shedding characteristics causes changes in the Strouhal number, characteristics length, and acoustic pressure. It is known that the major parameters to predict the acoustic pressure are the flow velocity, the characteristic length, and the fluctuating lift coefficient. In this paper, numerical analysis of the flow field and acoustic analogy are utilized to predict the noise field about a circular cylinder by using CAA(Computational Aeroacoustics) method of a commercial code, Fluent, and the results are compared to the available experimental data.
토카막 장치에서 자석 구조물의 조립에 관한 검토 KSTAR TF
김경민(K.M.Kim),최창호(C.H.Choi),홍권희(K.H.Hong),양형렬(H.L.Yang),유인근(I.K.Yu),허남일(N.I.Her),사정우(G.H.Kim),김학근(S.T.Kim),김근홍(H.T.Kim),김상태(J.S.Yang),김홍택(J.S.Bak),양진석(C.H.Kim),박주식(P.Z.Shick),김재호(J. Z. Kim) 대한기계학회 2003 대한기계학회 춘추학술대회 Vol.2003 No.11
TF magnet structures are the main structural components in the KSTAR magnet systems to protect<br/> the superconducting coils from mechanical, electrical, and thermal loads. TF coil structure supports CS<br/> and PF coil system. The inter-coil structure contains adjustable shear keys and conical bolts to provide<br/> pre-loading in toroidal direction and to resist against in-plane and out-of-plane forces that are the most<br/> critical loads on the TF magnet system. The conical bolts and shear keys are specially designed to<br/> assemble easily and to provide a convenient accommodation for a good alignment. The connection plate<br/> that is one of the prototype fabrications had been manufactured to study adjustability of conical bolts<br/> and shear keys for assembly of TF coil structure. We could measure the misalignments at the keyways<br/> and conical holes with the misalignment measuring instrument.