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Hydroelastic Analysis of Composite Marine Propellers 船用复合螺旋桨的水弹性分析
Day 1 Tue, September 12, 2006 Pub Date : 2006-09-12 DOI: 10.5957/pss-2006-07
Y. L. Young
{"title":"Hydroelastic Analysis of Composite Marine Propellers","authors":"Y. L. Young","doi":"10.5957/pss-2006-07","DOIUrl":"https://doi.org/10.5957/pss-2006-07","url":null,"abstract":"Recent increases in the availability of low-cost composites and improvements in the reliability of manufacturing techniques lead to an increase in the use of composites for marine propulsion systems. In addition to the obvious advantage of low mass and high specific weight, the anisotropic characteristics of composites can also be exploited to improve the hydrodynamic performance by automatically adjusting the shape of the blade. The objective of this work is to develop a numerical tool to predict the hydroelastic response of composite marine propellers. This is achieved by coupling a 3-D boundary element method (BEM) with a 3-D finite element method (FEM) to predict the interaction between blade deformation and fluid pressure variation on the blade. An overview of the numerical algorithm is presented, along with experimental validation study of a composite propeller tested at the Naval Surface Warfare Center, Carderock Division (NSWCCD).","PeriodicalId":277779,"journal":{"name":"Day 1 Tue, September 12, 2006","volume":"320 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116541254","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: 1
Study of Puller Podded Propulsors with Tapered Hub Propellers in Straight Course and Azimuthing Conditions 直航和方位条件下锥形轮毂拉臂吊舱螺旋桨的研究
Day 1 Tue, September 12, 2006 Pub Date : 2006-09-12 DOI: 10.5957/pss-2006-09
M. Islam, B. Veitch, N. Bose, Pengfei Liu
{"title":"Study of Puller Podded Propulsors with Tapered Hub Propellers in Straight Course and Azimuthing Conditions","authors":"M. Islam, B. Veitch, N. Bose, Pengfei Liu","doi":"10.5957/pss-2006-09","DOIUrl":"https://doi.org/10.5957/pss-2006-09","url":null,"abstract":"This paper presents the results of an experimental study on the effects of propeller hub angle and azimuth conditions on the propulsive characteristics of puller podded propulsors in open water conditions. The propulsive performance of two model puller-podded units with different propeller hub geometry was measured using a custom-designed pod dynamometer in a towing tank. The podded units were tested to measure the thrust and torque of the propeller and the forces on the whole unit in three orthogonal directions. The tests were conducted for a range of advance coefficients from 0 to 1.2, combined with the range of static azimuth angles from +20° to -20° with a 10° increment. The dynamometer system consisted of a six-component global dynamometer and a three-component pod dynamometer. The variation in the propulsive pe1formance due to the changes in hub geometry was examined first, followed by a study on the effect of azimuth conditions on the forces and moments on the propulsor. The force and moment measurements are presented as functions of advance coefficient and azimuth angle. The results showed that for the range of azimuth angles tested, the thrust and torque of the propeller and the forces on the whole unit in three orthogonal directions are functions of the azimuth angle for puller propulsors.","PeriodicalId":277779,"journal":{"name":"Day 1 Tue, September 12, 2006","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125089060","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
Advanced Blade Sections for High Speed Propellers 高速螺旋桨的先进叶片部分
Day 1 Tue, September 12, 2006 Pub Date : 2006-09-12 DOI: 10.5957/pss-2006-10
S. Black, Young T. Shen, S. Jessup
{"title":"Advanced Blade Sections for High Speed Propellers","authors":"S. Black, Young T. Shen, S. Jessup","doi":"10.5957/pss-2006-10","DOIUrl":"https://doi.org/10.5957/pss-2006-10","url":null,"abstract":"As surface ships are required to achieve higher speeds to meet their mission requirements, many still have intermediate speed endurance requirements that necessitate higher efficiency than some high-speed propulsor options con provide. This effort looks into developing propellers with blade sections that have the efficiency characteristics of conventional submerged sub-cavitating propellers at low and inte1mediate speeds but can transition to the super-cavitating mode for highspeed operation without encountering thrust breakdown.","PeriodicalId":277779,"journal":{"name":"Day 1 Tue, September 12, 2006","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128718102","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: 1
Experimental Analysis of the Propeller Rudder Interaction 桨舵相互作用的实验分析
Day 1 Tue, September 12, 2006 Pub Date : 2006-09-12 DOI: 10.5957/pss-2006-02
M. Felli, G. Guj, F. Di Felice, G. Aloisio
{"title":"Experimental Analysis of the Propeller Rudder Interaction","authors":"M. Felli, G. Guj, F. Di Felice, G. Aloisio","doi":"10.5957/pss-2006-02","DOIUrl":"https://doi.org/10.5957/pss-2006-02","url":null,"abstract":"In the present study an experimental analysis of the propeller-rudder interaction has been performed in a cavitation tunnel. The experiments simulated the condition of a rudder operation aft of a propeller but without the influence of the hull. The activity has been performed through dynamometric measurements, LDV phase sampling techniques and flow visualizations with an high speed camera.","PeriodicalId":277779,"journal":{"name":"Day 1 Tue, September 12, 2006","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130853640","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: 1
Hydrodynamic Analysis of Podded Propellers 吊舱螺旋桨的水动力分析
Day 1 Tue, September 12, 2006 Pub Date : 2006-09-12 DOI: 10.5957/pss-2006-01
S. Kinnas, Hanseong Lee, Bikash Mishra, Lei He, S. Rhee, S. Balasubramanyam
{"title":"Hydrodynamic Analysis of Podded Propellers","authors":"S. Kinnas, Hanseong Lee, Bikash Mishra, Lei He, S. Rhee, S. Balasubramanyam","doi":"10.5957/pss-2006-01","DOIUrl":"https://doi.org/10.5957/pss-2006-01","url":null,"abstract":"This paper presents computational techniques which couple a lifting surface method (MPUF-3A) for the unsteady cavitating flow analysis of propellers with an Euler solver (GBFLOW) and a Reynolds-Averaged Navier Stokes Solver (FLUENT) to predict the flow and the performance of various types of podded propellers such as pull, push and twin types. The time-averaged propeller force distributions are considered as source terms in the momentum equations of GBFLOW or FLUENT. The effect of viscosity on the effective wake and on the performance of each propeller, as well as on the forces on the pod and strut are assessed, and the results of the involved methods are validated with those measured in experiments.","PeriodicalId":277779,"journal":{"name":"Day 1 Tue, September 12, 2006","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132312943","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: 1
CFD Simulation for Propeller Four-Quadrant Flows 螺旋桨四象限流动的CFD模拟
Day 1 Tue, September 12, 2006 Pub Date : 2006-09-12 DOI: 10.5957/pss-2006-04
Sing-Kwan Lee
{"title":"CFD Simulation for Propeller Four-Quadrant Flows","authors":"Sing-Kwan Lee","doi":"10.5957/pss-2006-04","DOIUrl":"https://doi.org/10.5957/pss-2006-04","url":null,"abstract":"A Reynolds-Averaged Navier-Stokes (RANS) method has been employed in conjunction with an overlapping moving grid approach to provide accurate resolution of four-quadrant propeller flows under both the design and off-design conditions. It is well known that some off-design propeller flow phenomena are dominated by viscous effects and cannot be accurately predicted by the potential flow methods. In order to properly account for viscous effects, it is necessary to employ accurate and robust numerical methods which can provide detailed resolution of the propeller boundary layer, turbulent wake, leading-edge separation, and unsteady ring vortices induced by propeller operations under off-design conditions. In this study, time-domain simulations are performed for the DTRC 4I18 propeller under ahead, bollard pull, crash-ahead, crash-astern, and backing conditions and compared with the available experimental data.","PeriodicalId":277779,"journal":{"name":"Day 1 Tue, September 12, 2006","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125261626","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: 5
Flow Analysis, Design and Testing of Ducted Propellers 导管式螺旋桨的流动分析、设计与试验
Day 1 Tue, September 12, 2006 Pub Date : 2006-09-12 DOI: 10.5957/pss-2006-06
G. Zondervan, M. Hoekstra, J. Holtrop
{"title":"Flow Analysis, Design and Testing of Ducted Propellers","authors":"G. Zondervan, M. Hoekstra, J. Holtrop","doi":"10.5957/pss-2006-06","DOIUrl":"https://doi.org/10.5957/pss-2006-06","url":null,"abstract":"This paper addresses the design and the testing of ducted propellers and illustrates how flow analysis can be used as a support. After a review of the working principles of a ducted propeller system by referring to well-known theoretical analyses, it describes developments in computational methods. In particular, a numerical code simulating the viscous flow around a ducted propeller system in open water shows promising results. Since propellers in ducts are designed as quasi-open propellers, the estimation of the effective advance speed, influenced by the velocity field induced by the duct, is an important aspect. New estimates for dividing the induced flow field into a propeller and a duct contribution are given, which lead to better correspondence with experimental information. Polynomials describing the performance of the B-4-70 propeller in nozzle 19A are also provided, in addition to an empirical relation for the virtual pitch of the Ka-series propellers. Model testing of ducted propellers is evaluated against numerical simulation tools. It is concluded that, in spite of rapid developments in computational fluid dynamics, the propulsive performance of ducted propellers can still most accurately be assessed by model tests.","PeriodicalId":277779,"journal":{"name":"Day 1 Tue, September 12, 2006","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128027179","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: 8
Predication of Hull Pressure Fluctuations Induced by Single and Twin Propellers 单螺旋桨和双螺旋桨对船体压力波动的预测
Day 1 Tue, September 12, 2006 Pub Date : 2006-09-12 DOI: 10.5957/pss-2006-03
Y. Hwang, Hong-cai Sun, S. Kinnas
{"title":"Predication of Hull Pressure Fluctuations Induced by Single and Twin Propellers","authors":"Y. Hwang, Hong-cai Sun, S. Kinnas","doi":"10.5957/pss-2006-03","DOIUrl":"https://doi.org/10.5957/pss-2006-03","url":null,"abstract":"A previously developed method which solves for the diffraction potential on the hull subject to the presence of a single propeller (HULLFPP) is coupled with a Vortex Lattice Method (MPUF3A) which solves for the unsteady sheet cavitation on the propeller blades. Systematic studies on grid dependence of cavity solution, propeller forces and hull pressure fluctuations are performed in the case of single propellers. The effects of the presence of tunnel wall or free surface on the predicted pressure fluctuations on the hull are also investigated. The method is then extended to the case of twin propellers. Comparisons between the numerical results and those measured in existing experiments are presented.","PeriodicalId":277779,"journal":{"name":"Day 1 Tue, September 12, 2006","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123675837","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: 7
Fully Transient CFD Analysis of Waterjet Pumps 水泵全瞬态CFD分析
Day 1 Tue, September 12, 2006 Pub Date : 2006-09-12 DOI: 10.5957/pss-2006-05
N. Bulten, V. Esch
{"title":"Fully Transient CFD Analysis of Waterjet Pumps","authors":"N. Bulten, V. Esch","doi":"10.5957/pss-2006-05","DOIUrl":"https://doi.org/10.5957/pss-2006-05","url":null,"abstract":"This paper presents results of fully transient calculations of the flow-through waterjet pumps. The fully transient method is based on a moving mesh option to implement the rotation of the impeller. In this way, the time-dependent forces, acting on the impeller, can be determined. These forces can be divided into axial and radial forces, e.g. as a result of rotor-stator interaction. In waterjet applications, the non-uniform inflow velocity distribution creates additional steady transverse impeller force in the stationary frame (in the horizontal and vertical direction). CFD analyses are made of two Lips-Jets waterjet pumps equipped with 3 and 6 bladed impellers to investigate the rotor-stator interaction force for various flow rates. Calculations with a non-uniform inflow velocity distribution are made to determine the steady transverse forces. The strength of this steady force depends on the amplitude of the velocity variations and the flow rate through the pump.","PeriodicalId":277779,"journal":{"name":"Day 1 Tue, September 12, 2006","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128040010","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: 12
Design, Fabrication and Testing of the Composite Pitch-Adapting (Flex) Propellers 复合俯仰自适应螺旋桨的设计、制造与试验
Day 1 Tue, September 12, 2006 Pub Date : 2006-09-12 DOI: 10.5957/pss-2006-08
B. Y. Chen, S. K. Neely, T. J. Michael, S. Gowing, R. P. Szwerc, Dirk Buchler, Reinert Schult
{"title":"Design, Fabrication and Testing of the Composite Pitch-Adapting (Flex) Propellers","authors":"B. Y. Chen, S. K. Neely, T. J. Michael, S. Gowing, R. P. Szwerc, Dirk Buchler, Reinert Schult","doi":"10.5957/pss-2006-08","DOIUrl":"https://doi.org/10.5957/pss-2006-08","url":null,"abstract":"Pitch adapting (Flexible) composite propellers offer the potential for improved performance over metal propellers in cavitation and vibration performance while reducing weight and manufacturing cost. As the propeller rotates in the non-uniform (circumferentially-varying) flow field, the blade deforms in response to the hydrodynamic loading, resulting in reduced cavitation and hull vibration. Using high-performance carbon fiber reinforced plastic (CFRP) as a blade material not only reduces the propeller weight but also increases the strength. The design and the analysis of two sets of rigid and flexible composite propellers are addressed. The fabrication was performed by A.I.R. using CFRP. The tests were carried out at the NSWCCD 36-in water tunnel. The test results show that the powering and cavitation performance of flexible propellers can be better than those of rigid propellers.","PeriodicalId":277779,"journal":{"name":"Day 1 Tue, September 12, 2006","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128384494","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
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