Day 2 Sat, August 07, 2004最新文献

Measurement Techniques for Full Scale Test of a Submersible Walking Dredger/ Miner 潜航挖泥船/挖泥船全尺寸试验测量技术

Day 2 Sat, August 07, 2004 Pub Date : 2004-08-06 DOI: 10.5957/attc-2004-015

S. Sarkar, N. Bose, Mk Sarkar

引用次数: 0

Model-Scale and Full-Scale Measurements on Ship Waves 船舶波浪的模型尺度和全尺寸测量

Day 2 Sat, August 07, 2004 Pub Date : 2004-08-06 DOI: 10.5957/attc-2004-012

T. Fu, James R. Rice, A. Karion

引用次数: 0

A New Approach on the Mechanical Oil Spill Cleanup from the Sea: Model and Experiment 海上机械溢油清理的新方法:模型与实验

Day 2 Sat, August 07, 2004 Pub Date : 2004-08-06 DOI: 10.5957/attc-2004-016

Yalçın Ünsan, B. Barlas

{"title":"A New Approach on the Mechanical Oil Spill Cleanup from the Sea: Model and Experiment","authors":"Yalçın Ünsan, B. Barlas","doi":"10.5957/attc-2004-016","DOIUrl":"https://doi.org/10.5957/attc-2004-016","url":null,"abstract":"Increasing environmental problems highlight the need to lessen damages to seas resulting from spills and discharge of oil and petroleum products. In case of nearshore and offshore oil spills, a thin oil layer has to be skimmed off from the sea surface either by self-floating oil skimming equipment or by oil spill recovery ships. In this paper, self-floating oil skimming equipment is studied and an oil spill recovery vessel appropriate for coastal waters is developed. Initially, an oil skimmer composed of oleophilic disks is investigated. This system, as is known from the various skimming applications around the world, operates by making use of the adhesive properties of oil. A prototype of this skimmer is constructed and then series of experiments are carried out to determine the parameters that can be used in the design process. Secondly, a new oil recovery system is presented which utilizes principle of suction and density differences. The system presented differs from its counterparts in that it speeds up the gravity-separation in the settling tank into which the oil-water mixture is taken with high rates of flow. An experimental model for this system is constructed and tested. The preliminary tests revealed that a system with high rates of oil recovery is possible.","PeriodicalId":286274,"journal":{"name":"Day 2 Sat, August 07, 2004","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126279803","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}

引用次数: 0

Cavitation: Some Full Scale Experience of Complex Structures and Methods of Analysis and Observation 空化:复杂结构的全尺度经验与分析观测方法

Day 2 Sat, August 07, 2004 Pub Date : 2004-08-06 DOI: 10.5957/attc-2004-010

J. Carlton, P. Fitzsimmons

{"title":"Cavitation: Some Full Scale Experience of Complex Structures and Methods of Analysis and Observation","authors":"J. Carlton, P. Fitzsimmons","doi":"10.5957/attc-2004-010","DOIUrl":"https://doi.org/10.5957/attc-2004-010","url":null,"abstract":"The paper discusses some of the more complex cavitation structures that have been encountered in full-scale ship practice and the integration that has been observed to occur between the various substructures of the cavitating regimes. Some comparison with model scale studies is made. The paper, for the most part, concentrates on the dynamics associated with tip vortices, but also recounts, but also recounts experiences with roots and other forms of cavitation. Single, twin and triple screw situations are discussed with ship types ranging from LNG carries through container ships, cruise ships, high-speed patrol craft and small warships. The analysis of hull surface pressure signals originating from cavitation action is also discussed in relation to cavity phenomenological behavior.\u0000 With regard to observation methods, the currently available and practical techniques are discussed; semicolon comparing and contrasting the techniques and their relevance to problem-solving based on Lloyd’s Register’s full-scale experience. Additionally, a new borescope method, pioneered and developed by Lloyd’s Register, which has successfully been used in a number of full-scale investigations is also presented.","PeriodicalId":286274,"journal":{"name":"Day 2 Sat, August 07, 2004","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126514140","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}

引用次数: 6

An Experimental Model for Ice Performance of Podded Propellers 吊舱螺旋桨结冰性能的实验模型

Day 2 Sat, August 07, 2004 Pub Date : 2004-08-06 DOI: 10.5957/attc-2004-009

J. Wang, A. Akinturk, W. Foster, S. J. Jones, N. Bose

引用次数: 5

Measurements of the Evolution of the Wake and Tip Vortex of a Control Surface Undergoing Periodic Motion 周期运动控制面尾流和尖涡演变的测量

Day 2 Sat, August 07, 2004 Pub Date : 2004-08-06 DOI: 10.5957/attc-2004-011

S. Turnock, A. Querard

引用次数: 2

Design and Fabrication of a Collective and Cyclic Pitch Propeller 聚螺距和循环螺距螺旋桨的设计与制造

Day 2 Sat, August 07, 2004 Pub Date : 2004-08-06 DOI: 10.1115/OMAE2004-51313

T. Humphrey, N. Bose, C. Williams, Michael Snow

引用次数: 16

Evaluation of a Dynamic Positioning Thruster Wave Using Stereoscopic Particle Image Velocimetry 用立体粒子图像测速技术评价动态定位推力器波

Day 2 Sat, August 07, 2004 Pub Date : 2004-08-06 DOI: 10.5957/attc-2004-013

S. El Lababidy, N. Bose, P. Liu, F. Di Felice

{"title":"Evaluation of a Dynamic Positioning Thruster Wave Using Stereoscopic Particle Image Velocimetry","authors":"S. El Lababidy, N. Bose, P. Liu, F. Di Felice","doi":"10.5957/attc-2004-013","DOIUrl":"https://doi.org/10.5957/attc-2004-013","url":null,"abstract":"Thrusters working at low advance coefficients are employed in a wide range of offshore and marine applications on Floating, Production, Storage and Offloading (FPSO) systems; shuttle tankers; tug boats; and mobile offshore units. Therefore, an understanding of the flow around the thrusters is of great practical interest. Despite this interest, there is lack of knowledge in the description of the hydrodynamic characteristics of thrusters wake at bollard pull and low advance coefficient values.\u0000 This work was aimed at providing detailed data about the hydrodynamic characteristics of a Dynamic Positioning (DP) thruster wake flow at different low advance coefficient values. Wake measurements were made during cavitation tunnel tests carried out on a ducted propeller model at the Italian Ship Model Basin (INSEAN), Rome, Italy. Through these experiments, the DP thruster far wake velocity components at different downstream axial planes, up to 15 diameters downstream, were obtained using a Stereoscopic Particle Image Velocimetry (SPIV) system in the INSEAN cavitation tunnel. These experiments were carried out at two different advance coefficient (J) values [bollard pull (J = 0), and J = 0.4].","PeriodicalId":286274,"journal":{"name":"Day 2 Sat, August 07, 2004","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133910947","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}

引用次数: 0