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직접분사식 엔진의 분무특성에 미치는 스월의 영향 및 입경분포에 대한 수치해석적 연구
양회천(H.C.Yang),유홍선(H.S.Ryou),최영기(Y.K. Choi) 한국자동차공학회 1993 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
A numerical simulation of the spray characteristics in a direct injection engine was performed 10 study the effects of swirl on spray. This study used the finite volume method. the hybrid and Euler implicit scheme and the modified k-ε turbulence model. Also the spray model which considered breakup, collision and coalescence and evaporation of spray droplets was used.<br/> The calculation results of Sauter mean diameter(SMD) and droplet size distribution were compared with<br/> the experimental data(1-2] in a quiescent environment<br/> As the swirl ratio increased the evaporation rate was increased. due to the wide dispersion of spray<br/> droplets and the strong interaction between spray droplets and gas field.<br/>
홍기배(K. B. Hong),김형섭(H. S. Kim),양회천(H. C. Yang),유홍선(H. S. Ryou) 한국자동차공학회 1996 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1996 No.11_1
In this study, the numerical simulations of the spray characteristics within the combustion chamber of direct injection model engine are performed to examine the applicability of turbulence model. The turbulence models used are the RNG k-t model and the modified k-ε model which included the compressibility effect due to the compression/expansion of the charges. The predicted results in the quiescent condition of direct injection model engine show reasonable trends comparing with the experimental data of spray characteristics, i .e., spray tip penetration, spray tip velocity. The spray tip penetration predicted using the RNG k-t model is
중화중의약학회 정척분회 학술동향과『척추 상견병의 중의 정척 진료 가이드(中醫整脊科常見病診療指南), 2011』소개
신병철(Byung-Cheul Shin),황의형(Eui-Hyoung Hwang),조현우(Hyun-Woo Cho),양회천(Hui-Chun Yang),전종렬(Jong-Yul Chun),설재욱(Jae-Uk Sul),허광호(Kwang-Ho Hoe) 척추신경추나의학회 2012 척추신경추나의학회지 Vol.7 No.1
Objectives : The aims of this study were to introduce the theory of traditional Chinese orthopedic theory(整脊굊걩) and to analyze the guideline of diagnosis and treatment of common spinal disorders by treating Chinese spinal manipulation technique(常見病中醫整脊指南). Methods : We have searched the web sites of traditional Chinese orthopedics association (整脊學會), a branch of the China academy of traditional Chinese medicine (TCM), and related articles. Additionally, we analyzed the guideline of diagnosis and treatment of common spinal disorders by treating Chinese spinal manipulation technique which was introduced by that association at 7th academic conference in China in 2011. Results : The guideline was prepared by 2 year project leaded by professor Yi-zhong Wei who was a person in charge of the spinal manipulation guideline of national standardization committee of TCM in China. It was a summary of the whole theory of China spinal manipulation therapy in TCM and contained 22 common spinal disorders by the treatment of traditional Chinese Tuina methods. Spinal manipulation theory was summarized by one doctrine, two theories, and two important view points. The treatment method was abstracted as 8 major Tuina techniques. Conclusions : The guideline will be a way of advance of Chinese spinal manipulation technique. This will be a good reference to Korea Chuna manipulation for improving their techniques.
고연석(Youn-Seok Ko),이정한(Jung-Han Lee),황의형(Eui-Hyoung Hwang),허광호(Kwang-Ho Heo),윤종민(Jong-Min Yun),박태용(Tae-Yong Park),공재철(Jae-Cheol Kong),설재욱(Jae-Uk Sul),정택근(Taek-Geun Jung),김기병(Ki-Byoung Kim),양회천(Hui-Chun 척추신경추나의학회 2012 척추신경추나의학회지 Vol.7 No.2
Objectives : The aim of this study was to prepare the validity and relevance for National Health Insurance of Chuna manual therapy through measurement of resource-based relative value scale(RBRVS) scores. Methods : To prepare for National Health Insurance, we studied it about standardized classification of the practice and definition, and speciality by difficulty and safety of Chuna manual therapy. Results : Classification of the practice could be classified to 7 of Chuna manual therapy and 24 traditional manual therapy, it also categorized as one of 3 kinds(basic, simple, special). The RBRVS scores of Chuna manual therapy were measured to 283.28, 566.57 and 1133.14. Conclusions : This study could be used to basis data for National Health Insurance of Chuna manual therapy, but further studies must be needed more objective investigation and data to calculate RBRVS scores.