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황미현(M.H. Hwang),김동현(D.H. Kim),이종욱(J.W. Lee),오민우(M.W. Oh),김명환(M.H. Kim),류경중(G.J. Ryul) 한국전산유체공학회 2010 한국전산유체공학회지 Vol.15 No.4
In this Study, aerodynamic analyses based on unsteady computational fluid dynamics (CFD) have been conducted for a 2-bladed vertical-axis wind turbine (VAWT) configuration. Reynolds-averaged Navier-Stokes equations with standard k-ω and SST k-ω turbulence models are solved for unsteady flow problems. The experiment model of 2-bladed VAWT has been designed and tested in this study. Aerodynamic experiment of the present VAWT model are effectively conducted using the vehicle mounted testing syslem. The comparison result between the experiment and the computational fluid dynamics (CFD) analysis are presented in order to verify the accuracy of CFD modeling with different turbulent models.
뇌병변 소아환자의 기립보조기 사용 시 접촉 패드 유형에 따른 근활성도 비교
이종훈(J. H. Lee),오민우(M. W. Oh),하종규(J. G. Ha),서재용(J. Y. Seo),황화식(H. S. Hwang) 한국재활복지공학회 2014 재활복지공학회논문지 Vol.8 No.3
본 연구에서는 Pneumatic air fitting system을 적용한 기립보조기 제품을 뇌병변 소아환자를 대상으로 기립보조기의 신체 고정용 폼패드(foam pad)와 에어패드(air pad) 사용 시, 뇌병변 장애아동들의 체간 및 하지근육의 수축 양상을 비교·분석하였다. 연구결과, 패드(foam pad vs. air pad) 유형에 따른 근육별 근력 활성도는 차이가 있었다. 이러한 차이는 큰 동작(식사동작)에서 크게 나타나고, 작은 동작(쓰기동작, 읽기동작)이 작게 나타났다. 이는 Pneumatic air fitting system을 적용한 기립보조기 제품 사용 시, 기존 폼패드에 비해 사용자에게 좀 더 편안함을 제공하는 것으로 나타났다. This study conducted a comparative analysis of the contraction pattern of trunk and lower limbs muscles of handicapped children with brain lesions during the use of foam pad and air pad for fixing a standing table to the body for pediatric patients with brain lesions using a standing table product applied with a pneumatic air fitting system. There was a difference in the measurement of muscle strength activity by muscle in accordance with pad type (foam pad vs. air pad). A large difference was found with big movements (movements of eating), while a small difference was discovered with small movements (writing and reading movements). This was found to furnish a little more comfort to users compared with the existing foam pad during the use of a standing table product applied with a pneumatic air fitting system.