Kazuhisa Otsubo, Mitsushi Watanabe, K. Ishida, M. Araki, Kenta Hasegawa, M. Saito, Hiroshi Sato, K. Yukawa, R. Iwashita, S. Kawano
1) Taniguchi, K.: The Hydrogen Gas Cutting System, Komatsu Technical Report, Vol. 50 No. 154, 2004. 2) Suitsu, K. and Yasuda, T.: Some Investigations Regarding Oxygen Cutting (Report 5) –Effect of Preheat Variation on the Cutting Efficiency-, Journal of the Japan Welding Society, Vol. 37. No. 10 pp. 1108-1114, 1961. 3) Nakanishi, M.: Study of Preheating Flame on Oxygen Cutting (Report 1) -Examination of the Heating Effect on the Cut Material-, Journal of the Japan Welding Society, Vol. 37, No. 11, pp. 1260-1287, 1968. 4) Sato, T., Yamamoto, Y., Kato, T., Takeda, T., Nagahori, N., Kamikihara, H.: Influence of Gas
{"title":"On availability analysis for pilot test of excavating and ore lifting conducted for seafloor polymetallic sulphides","authors":"Kazuhisa Otsubo, Mitsushi Watanabe, K. Ishida, M. Araki, Kenta Hasegawa, M. Saito, Hiroshi Sato, K. Yukawa, R. Iwashita, S. Kawano","doi":"10.2534/jjasnaoe.29.147","DOIUrl":"https://doi.org/10.2534/jjasnaoe.29.147","url":null,"abstract":"1) Taniguchi, K.: The Hydrogen Gas Cutting System, Komatsu Technical Report, Vol. 50 No. 154, 2004. 2) Suitsu, K. and Yasuda, T.: Some Investigations Regarding Oxygen Cutting (Report 5) –Effect of Preheat Variation on the Cutting Efficiency-, Journal of the Japan Welding Society, Vol. 37. No. 10 pp. 1108-1114, 1961. 3) Nakanishi, M.: Study of Preheating Flame on Oxygen Cutting (Report 1) -Examination of the Heating Effect on the Cut Material-, Journal of the Japan Welding Society, Vol. 37, No. 11, pp. 1260-1287, 1968. 4) Sato, T., Yamamoto, Y., Kato, T., Takeda, T., Nagahori, N., Kamikihara, H.: Influence of Gas","PeriodicalId":192323,"journal":{"name":"Journal of the Japan Society of Naval Architects and Ocean Engineers","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133014444","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Research on how the arrangement of arrayed PA-WECs influences to their electric power generation","authors":"J. Funada, M. Murai, Qiao Li","doi":"10.2534/jjasnaoe.31.59","DOIUrl":"https://doi.org/10.2534/jjasnaoe.31.59","url":null,"abstract":"","PeriodicalId":192323,"journal":{"name":"Journal of the Japan Society of Naval Architects and Ocean Engineers","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130076570","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Experimental Study on Wear Coefficient of Mooring Chain for Floating Offshore Structures","authors":"Yusuke Komoriyama","doi":"10.2534/jjasnaoe.35.77","DOIUrl":"https://doi.org/10.2534/jjasnaoe.35.77","url":null,"abstract":"","PeriodicalId":192323,"journal":{"name":"Journal of the Japan Society of Naval Architects and Ocean Engineers","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132113647","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Study on Simplified Formula for Long-term Predictions of Ship Response in Waves for Hull Structural Design","authors":"S. Matsui, Kyohei Shinomoto, Kei Sugimoto","doi":"10.2534/jjasnaoe.34.209","DOIUrl":"https://doi.org/10.2534/jjasnaoe.34.209","url":null,"abstract":"","PeriodicalId":192323,"journal":{"name":"Journal of the Japan Society of Naval Architects and Ocean Engineers","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126905368","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
T. Kawamura, S. Yamasaki, T. Mizojiri, S. Kataoka, A. Okazaki
The Reynolds number effect on the open water characteristics of a propeller with a laminar type blade section has been studied by CFD and compared with the experiment. At a Reynolds number of model tests, the boundary layer flow over the blade is mostly laminar, while it becomes almost fully turbulent at a full scale Reynolds number. Because of this fact, the Reynolds number effect is very complicated. When the Reynolds number is increased from the model scale to the full scale, the open water efficiency first increases, and then start to decrease because of the transition of the boundary layer. As the boundary layer becomes almost fully turbulent, the open water efficiency again increases with increasing Reynolds number. It has been also shown that the transition Reynolds number of a propeller with laminar type blade section is higher than that of a propeller with MAU type blade section. The open water efficiency of a model test at a sufficiently high Reynolds number is close to that at a full scale Reynolds number. However, because the open water efficiency of model tests is significantly dependent on the Reynolds number, the selection of the Reynolds number in model tests is of critical importance.
{"title":"A Study on the Optimum Propeller at Full Scale Condition, Part 1: Effect of the Reynolds Number on the Open Water Characteristics of Propellers with Laminar Flow Blade Section","authors":"T. Kawamura, S. Yamasaki, T. Mizojiri, S. Kataoka, A. Okazaki","doi":"10.2534/jjasnaoe.29.11","DOIUrl":"https://doi.org/10.2534/jjasnaoe.29.11","url":null,"abstract":"The Reynolds number effect on the open water characteristics of a propeller with a laminar type blade section has been studied by CFD and compared with the experiment. At a Reynolds number of model tests, the boundary layer flow over the blade is mostly laminar, while it becomes almost fully turbulent at a full scale Reynolds number. Because of this fact, the Reynolds number effect is very complicated. When the Reynolds number is increased from the model scale to the full scale, the open water efficiency first increases, and then start to decrease because of the transition of the boundary layer. As the boundary layer becomes almost fully turbulent, the open water efficiency again increases with increasing Reynolds number. It has been also shown that the transition Reynolds number of a propeller with laminar type blade section is higher than that of a propeller with MAU type blade section. The open water efficiency of a model test at a sufficiently high Reynolds number is close to that at a full scale Reynolds number. However, because the open water efficiency of model tests is significantly dependent on the Reynolds number, the selection of the Reynolds number in model tests is of critical importance.","PeriodicalId":192323,"journal":{"name":"Journal of the Japan Society of Naval Architects and Ocean Engineers","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126957277","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
H. Kajiwara, H. Kimura, Ichiro Ishikawa, Hirofumi Yamada, Yuusuke Dakeshita, Shougo Nakashima
Summary First of all, the paper focuses the problem to construct a scheduling model of the stockyard in a shipyard in Japan, which should be verified by comparing the actual usage of facilities. Secondly it discusses the problem to apply the model to determine appropriate starting dates for block fabrication in assembly lines in order to achieve leveling of working hours. It is shown that these problems are formulated into RCPSP (Resource Constraint Project Scheduling Problem) and solved successfully using a software OptSeq(TM) developed by Prof. M. Kubo based on an RCPSP solver developed by Prof. K. Nonobe and Prof. T. Ibaraki.
{"title":"Process Scheduling of a Shipbuilding Stockyard based on RCPSP Approach","authors":"H. Kajiwara, H. Kimura, Ichiro Ishikawa, Hirofumi Yamada, Yuusuke Dakeshita, Shougo Nakashima","doi":"10.2534/jjasnaoe.31.183","DOIUrl":"https://doi.org/10.2534/jjasnaoe.31.183","url":null,"abstract":"Summary First of all, the paper focuses the problem to construct a scheduling model of the stockyard in a shipyard in Japan, which should be verified by comparing the actual usage of facilities. Secondly it discusses the problem to apply the model to determine appropriate starting dates for block fabrication in assembly lines in order to achieve leveling of working hours. It is shown that these problems are formulated into RCPSP (Resource Constraint Project Scheduling Problem) and solved successfully using a software OptSeq(TM) developed by Prof. M. Kubo based on an RCPSP solver developed by Prof. K. Nonobe and Prof. T. Ibaraki.","PeriodicalId":192323,"journal":{"name":"Journal of the Japan Society of Naval Architects and Ocean Engineers","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116704267","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Extraction of Dominant Parameters and Proposal of Simplified Formula for Ship Motion in Waves","authors":"S. Matsui, Kyohei Shinomoto, Kei Sugimoto","doi":"10.2534/jjasnaoe.35.43","DOIUrl":"https://doi.org/10.2534/jjasnaoe.35.43","url":null,"abstract":"","PeriodicalId":192323,"journal":{"name":"Journal of the Japan Society of Naval Architects and Ocean Engineers","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114970885","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Numerical study on Estimation of Hydrodynamic Force acting on Open-frame Underwater Vehicle","authors":"Hiroyoshi Suzuki, Yosuke Okuda, Yoshiki Nagai, T. Iseki, Yoshitaka Watanabe, Yutaka Ohta","doi":"10.2534/jjasnaoe.34.87","DOIUrl":"https://doi.org/10.2534/jjasnaoe.34.87","url":null,"abstract":"","PeriodicalId":192323,"journal":{"name":"Journal of the Japan Society of Naval Architects and Ocean Engineers","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129897954","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Evaluation of Wave-induced Coupled Dynamics Between Multi-purpose Offshore Supply Vessel and Suspended Load During Crane Lifting Operation","authors":"Kazuhisa Otsubo, Kenta Hasegawa","doi":"10.2534/jjasnaoe.33.173","DOIUrl":"https://doi.org/10.2534/jjasnaoe.33.173","url":null,"abstract":"","PeriodicalId":192323,"journal":{"name":"Journal of the Japan Society of Naval Architects and Ocean Engineers","volume":"225 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130769531","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
H. Narimatsu, T. Uemura, Masakazu Kuwada, K. Gotoh
{"title":"Studies on applying hot-rolled coil to hull superstructure","authors":"H. Narimatsu, T. Uemura, Masakazu Kuwada, K. Gotoh","doi":"10.2534/jjasnaoe.32.247","DOIUrl":"https://doi.org/10.2534/jjasnaoe.32.247","url":null,"abstract":"","PeriodicalId":192323,"journal":{"name":"Journal of the Japan Society of Naval Architects and Ocean Engineers","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128289557","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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