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Joa, Soon Won,Lee, Chang Euk 울산과학대학 1993 연구논문집 Vol.18 No.-
동양 최대의 고대선인 신안 해저 침몰선을 1976년 전라남도 신안군 회도면 방축리 앞바다에서 발굴 인양되어 현재 복원 과정에 있다. 침몰선은 목선 구조의 은촉홈 붙이 클링커 형선으로 항양 항해의 무역선으로 선저 형상은 첨저형을 이루고 있다. 발굴 인양선은 약 180톤급의 600년 전에 건조된 목선 구조의 선형으로는 아주 큰 선박이다.(1331년경) 침몰선의 구조적 특성으로는: 1. 선저형상은 방형 용골을 갖춘 첨저형(V Type)의 구조이다. 2. 외판은 은촉홈 붙이 클링커형(Rabbetted Clinker Type)의 구조이다. 3. 격벽은 방요재와 외판과를 나무 못(Wooden Nail)으로 고정시켰다. 발굴 인양된 선편의 구조 부재와의 고직 방법은 장부촉 이음(Mortise-Joint)과 테-논 이음(Tenon-Joint)의 방법으로 고착되었음을 확인하였다. 복원 설계 과정에서 타(Rudder)의 크기와 추진에 필요한 돛(Sail)의 크기에 많은 의문점이 제시 되었다. 본 연구에서는, 신안 해저 침몰선의 복원 과정에 역사적인 고증 단계의 과정이 더욱 필요 될것으로 사료되나, 현재 복원 설계된 선형을 이용하여 전체 표면 및 자유 표면의 일부에 Rankine Source를 분포시킨 유동 해석을 통하여 얻어진 자료의 값으로 침몰선의 원형 복원에 따른 의문점을 해결할 수 있는 자료로써 제시코져 한다. The sunken ship is of Rabbetted Clinker Type, a trade ship for over-sea voyage whose bottom has V-type. The very excavated ship has displacement of 180 tonnage class, and it is a very big wooden ship which was built some 600 years ago. This study, on the basis of the restored and designed ship, through DATA from flow analysis by Rankine Source Distribution Method to hull and free surfaces, is to show the solution to problems in restoration of the prototype of the sunken ship. It is supposed that we should have much more historical study for representation of the SHIN-AN Sunken Ship.
Modeling of internal wave generation near a shelf slope by ocean finite element method
이귀주,좌순원,엄기창 한국수산해양기술학회 2006 수산해양기술연구 Vol.42 No.1
The 3-D modeling of ocean finite element method(OFEM) using k-ε turbulent model and tetrahedron grids has been used to investigate the internal wave generation during the expansion of the deep water from the open sea to the shelf with a simple shape, which can be widely used in the fields of submarine development, ocean environment and meteorology, etc. In this paper, the detailed configuration of internal wave with its length and height and also the distribution of salinity and turbulent kinematic energy, etc. were derived. It is hoped that this OFEM method can be successfully applied to the numerical calculation of internal wave for and the oceanographic problems (tidal flows around underwater hill, plateau, Georges Bank, etc.) and ocean engineering problems(flow past artificial sea reefs) in future.
방희선,방한서,김유철,주성민,좌순원,노찬승,Bang, Hee-Seon,Bang, Han-Sur,Kim, You-Chul,Joo, Sung-Min,Joa, Soon-Won,Ro, Chan-Seoung The Korean Welding and Joining Society 2009 대한용접·접합학회지 Vol.27 No.5
Thermal and mechanical characteristics in dissimilar SS400-STS304 steel weldment have been investigated by 3D thermal elastic-plastic analysis. Moreover, the influence of welding residual stresses on the mechanical behaviour of this welded joint, by applying superimposed external load (tension load) was determined. The residual stresses obtained by numerical simulation were compared with the experimentally measured results. The FE results were in good agreement with the measured values. The mechanical test (hardness, tensile test) and metallurgical analysis was carried out to ensure the weld integrity. Hence, possibility of applying SS400-STS304 dissimilar steels in industries has been established.
이귀주(KWI-JOO LEE),좌순원(SOON-WON JOA),박명규(MYUNG-KYU PARK),신영균(YOUNG-KYUN SHIN) 한국해양공학회 2003 韓國海洋工學會誌 Vol.17 No.5
A series of tests of 5 model ships, selected from a data survey of 10 Gross Tonnage actual fishing boats, were performed in two circulating water channels (Chosun University in Korea and WJFEL in Japan), in order to develop the basic hull form of a 25 knots-class fishing boat. Resistance tests, trim and sinkage measurements and wave pattern observations etc., were included in each model test, and the model test results were compared and analyzed. The result was as follows: P-4 hull form ship changed into Deep V type bow is the best hull form with good performance, especially with regard to ship's resistance efficiency.
Series 60, $C_B=0.60$ 선형의 형상계수의 특성고찰
김훈철,양승일,김은찬,강국진,반석호,이영길,김윤호,이귀주,곽영기,좌순원,김효철,김우전,송무석,조규종,홍성완,이승희,신영균,Kim, Hun-Chol,Yang, Seung-Il,Kim, Eun-Chan,Kang, Kuk-Jin,Van, Suak-Ho,Lee, Young-Gill,Kim, Yoon-Ho,Lee, Kwi-Joo,Kwak, Young-Ki,Joa, 대한조선학회 1988 大韓造船學會誌 Vol.25 No.4
국제선형시험수조회의의 저항시험에 관한 표준선형인 Series 60, $C_B=0.60$에 대하여 서로 크기가 다른 5척의 모형선을 국내의 선형시험수조 보유기관(한국기계연구소 선박분소, 현대선박해양연구소, 서울대학교, 인하대학교)에서 제작, 교환하여 상사모형시험을 수행하였다. 이 결과를 Hughes 및 Telfer의 방법에 따라 해석하여 형상계수와 모형선의 크기 및 예인속도와의 관계를 파악하고자 했다. 이 선형에 대해서 형상계수는 Reynolds 수 뿐만 아니라 Froude 수에 따라서도 변화하는 것을 확인하였다. 또한 현행의 형상계수를 이용한 실선저항추정법이 공학적 유용성을 가지고 있음을 재확인하였다. 선형특성이 다른 여러 선형에 대해서 상사모형시험을 실시하므로서 보편적인 원리를 파악하는 것이 필요하다고 판단된다. The Resistance Committee of Korea Towing Tank Conference extended the Cooperative Experimental Study Program(1985)[1] to perform the geosim tests by exchanging the five different scaled Series 60, $C_B=0.60$ models between the participating organizations and 13 sets of resistance data have been obtained. The test results are compared among the participating towing tanks and also with the results given in the report of the Resistance and Flow Com-identify the mittee of 18th ITTC. The form factor of each model is derived by Prohaska's method to investigate its dependency on $R_n$. On the other hand, at each $F_n$, form factors are also derived by Telfer's method to relation between $F_n$ and form factor. For this hull form, form factors show relatively weak dependency on $R_n$ and strong dependency on $F_n$. And it is also found that dependencies on both have a cross relation. It seems that further study should be continued to understand more clearly the physical phenomena involved in this problem.
On the Characteristics of Form Factors (Series 60, C<SUB>B</SUB>=0.60)
Hun Chol Kim(김훈철),Seung II Yang(양승일),Eun Chan Kim(김은찬),Kuk Jin Kang(강국진),Suakho Van(반석호),Young-Gill Lee(이영길),Yoon-Ho Kim(김윤호),Kwi-Joo Lee(이귀주),Young Ki Kwak(곽영기),Soon Won Joa(좌순원),Hyochul Kim(김효철),Wu 대한조선학회 1988 大韓造船學會誌 Vol.25 No.4