322 10 3575 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Journal of Naval Architecture and Marine Engineering Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Creator An entity primarily responsible for making the resource Uddin, Mohammed Nasir Farhana, Aki Alim, Md. Abdul Date A point or period of time associated with an event in the lifecycle of the resource 2015-06-30 Description An account of the resource In the present paper, the effect of magneto-hydrodynamic (MHD) on mixed convection flow within a lid-driven triangular cavity has been numerically investigated. The bottom wall of the cavity is considered as heated. Besides, the left and the inclined wall of the triangular cavity are assumed to be cool and adiabatic. The cooled wall of the cavity is moving up in the vertical direction. The developed mathematical model is governed by the coupled equations of continuity, momentum and energy to determine the fluid flow and heat transfer characteristics in the cavity as a function of Rayleigh number, Hartmann number and the cavity aspect ratio. The present numerical procedure adopted in this investigation yields consistent performance over a wide range of parameters Rayleigh number Ra (103-104), Prandtl number Pr (0.7 - 3) and Hartmann number Ha (5 - 50). The numerical results are presented in terms of stream functions, temperature profile and Nussult numbers. It is found that the streamlines, isotherms, average Nusselt number, average fluid bulk temperature and dimensionless temperature in the cavity strongly depend on the Rayleigh number, Hartmann number and Prandtl number. Format The file format, physical medium, or dimensions of the resource application/pdf Identifier An unambiguous reference to the resource within a given context https://www.banglajol.info/index.php/JNAME/article/view/12910 10.3329/jname.v12i1.12910 Language A language of the resource eng Publisher An entity responsible for making the resource available Association of Naval Architects and Marine Engineers Relation A related resource https://www.banglajol.info/index.php/JNAME/article/view/12910/16371 Rights Information about rights held in and over the resource Copyright (c) 2015 Journal of Naval Architecture and Marine Engineering Source A related resource from which the described resource is derived Journal of Naval Architecture and Marine Engineering; Vol. 12 No. 1 (2015); 21-32 2070-8998 1813-8535 Subject The topic of the resource MHD Mixed convection Lid-driven Triangular cavity Finite element technique Hartmann number Rayleigh number. Title A name given to the resource Numerical study of magneto-hydrodynamic (MHD) mixed convection flow in a lid-driven triangular cavity Type The nature or genre of the resource info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Journal of Naval Architecture and Marine Engineering Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Creator An entity primarily responsible for making the resource Zakerdoost, Hassan Ghassemi, Hassan Ghiasi, Mahmoud Date A point or period of time associated with an event in the lifecycle of the resource 2013-06-09 Description An account of the resource Hull form optimization from a hydrodynamic performance point of view is an important aspect of ship design. This paper presents a computational method to estimate the ship resistance (viscous & wave) in calm-water. In the optimization process the evolution strategy (ES) technique is linked to the computational method to obtain an optimum hull form by taking into account the displacement as design constraint. For allowing the large variation of hull form during optimization process the hull surface is represented by NURBS. New hull forms are obtained from the well-known S60 hull and the classical Wigley hull taken as initial hulls in the optimization process at Fn=0.316. The optimization variables are a combination of ship hull offsets and main dimensions. The benchmark results for two test cases indicate that the total resistance of optimized hulls is reduced significantly.DOI: http://dx.doi.org/10.3329/jname.v10i1.12927 Format The file format, physical medium, or dimensions of the resource application/pdf Identifier An unambiguous reference to the resource within a given context https://www.banglajol.info/index.php/JNAME/article/view/12927 10.3329/jname.v10i1.12927 Language A language of the resource eng Publisher An entity responsible for making the resource available Association of Naval Architects and Marine Engineers Relation A related resource https://www.banglajol.info/index.php/JNAME/article/view/12927/10976 Source A related resource from which the described resource is derived Journal of Naval Architecture and Marine Engineering; Vol. 10 No. 1 (2013); 1-12 2070-8998 1813-8535 Subject The topic of the resource Hydrodynamics optimization hull form evolution strategies calm-water resistance Title A name given to the resource An evolutionary optimization technique applied to resistance reduction of the ship hull form Type The nature or genre of the resource info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Journal of Naval Architecture and Marine Engineering Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Creator An entity primarily responsible for making the resource Ahsan, Rumman Ul Prachurja, Protyasha Ali, Abu Raihan Mohammad Mamun, Mohammad Arif Hasan Date A point or period of time associated with an event in the lifecycle of the resource 2013-06-25 Description An account of the resource Stress concentration of structural members can be reduced considerably by the judicious choice of elliptic shaped stress raisers like notch and groove. Substantial effort has been given by numerous researchers to accurately measure the effect of such stress raisers, particularly of semicircular shaped notch and groove. An exhaustive bibliographical study proved that there is scope to investigate further and establish an alternative design criteria; concerning the elliptic geometry. Computational method, primarily the finite element method has been used to analyze the models under loading. This paper suggests the use of a modified elliptic shape which gives less stress concentration when compared to semicircular notch and groove. The ratio of minor and major half axes of the ellipse should be between 0.3 and 0.4. The introduction of shoulder with elliptic notch and groove even reduces the stress concentration. The results obtained from FEM analysis propose optimal values of geometrical design parameters. The study represents not only a precise view of stress distribution, but also to develop charts that can be used by designer for practical purposes.DOI: http://dx.doi.org/10.3329/jname.v10i1.13675 Format The file format, physical medium, or dimensions of the resource application/pdf Identifier An unambiguous reference to the resource within a given context https://www.banglajol.info/index.php/JNAME/article/view/13675 10.3329/jname.v10i1.13675 Language A language of the resource eng Publisher An entity responsible for making the resource available Association of Naval Architects and Marine Engineers Relation A related resource https://www.banglajol.info/index.php/JNAME/article/view/13675/10975 Source A related resource from which the described resource is derived Journal of Naval Architecture and Marine Engineering; Vol. 10 No. 1 (2013); 25-32 2070-8998 1813-8535 Subject The topic of the resource Notch and groove stress concentration factor elliptic notch finite element Von-Mises stress. Title A name given to the resource Determination of effect of elliptic notches and grooves on stress concentration factors on notched bar in tension and grooved shaft under torsion Type The nature or genre of the resource info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Computational Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Journal of Naval Architecture and Marine Engineering Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Creator An entity primarily responsible for making the resource Esfahani, J. A. Barati, E. Karbasian, Hamid Reza Date A point or period of time associated with an event in the lifecycle of the resource 2013-12-26 Description An account of the resource In flapping underwater vehicles the propulsive performance of harmonically sinusoidal heaving and pitching foil will be degraded by some awkward changes in effective angle of attack profile, as the Strouhal number increases. This paper surveys different angle of attack profiles (Sinusoidal, Square, Sawtooth and Cosine) and considers their thrust production ability. In the wide range of Strouhal numbers, thrust production of Square profile is considerable but it has a discontinuity in heave velocity profile, in which an infinite acceleration exists. This problem poses a significant defect in control of flapping foil. A novel profile function is proposed to omit sharp changes in heave velocity and acceleration. Furthermore, an optimum profile is found for different Strouhal numbers with respect to Square angle of attack profile.DOI: http://dx.doi.org/10.3329/jname.v10i2.14229 Format The file format, physical medium, or dimensions of the resource application/pdf application/pdf application/pdf Identifier An unambiguous reference to the resource within a given context https://www.banglajol.info/index.php/JNAME/article/view/14229 10.3329/jname.v10i2.14229 Language A language of the resource eng Publisher An entity responsible for making the resource available Association of Naval Architects and Marine Engineers Relation A related resource https://www.banglajol.info/index.php/JNAME/article/view/14229/12244 https://www.banglajol.info/index.php/JNAME/article/view/14229/13337 https://www.banglajol.info/index.php/JNAME/article/view/14229/26843 Source A related resource from which the described resource is derived Journal of Naval Architecture and Marine Engineering; Vol. 10 No. 2 (2013); 99-108 2070-8998 1813-8535 Subject The topic of the resource Flapping foil Bio-inspired propulsion underwater vehicle angle of attack profile Strouhal number Title A name given to the resource Comparative investigations in the effect of angle of attack profile on hydrodynamic performance of bio-inspired foil, (corrected) Type The nature or genre of the resource info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Journal of Naval Architecture and Marine Engineering Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Creator An entity primarily responsible for making the resource Rahaman, Md. Mashiur Akimoto, Hiromichi Ali, Md. Ashim Date A point or period of time associated with an event in the lifecycle of the resource 2013-06-29 Description An account of the resource A commercial CFD code Fluent 6.3® is used to simulate non-linear free surface flow and compute the impact load during variable velocity water entry of 2D wedge and ship section. The code uses the finite volume method to solve the conservation of mass and momentum equations to obtain simulated flow field. The interface between water and air was modeled using volume of fluid (VOF) method. Wedge section with 30 degree dead-rise angle and a ship section are numerically simulated. Time history of impact force and pressures at distinct locations are predicted; and compared with existing experimental results and other numerical methods. Present numerical results compare well with experimental measurements.DOI: http://dx.doi.org/10.3329/jname.v10i1.14383 Format The file format, physical medium, or dimensions of the resource application/pdf Identifier An unambiguous reference to the resource within a given context https://www.banglajol.info/index.php/JNAME/article/view/14383 10.3329/jname.v10i1.14383 Language A language of the resource eng Publisher An entity responsible for making the resource available Association of Naval Architects and Marine Engineers Relation A related resource https://www.banglajol.info/index.php/JNAME/article/view/14383/11008 Source A related resource from which the described resource is derived Journal of Naval Architecture and Marine Engineering; Vol. 10 No. 1 (2013); 49-58 2070-8998 1813-8535 Subject The topic of the resource Numerical simulation Hydrodynamic impact Variable velocity Title A name given to the resource Numerical simulation of 2D hydrodynamic impact of wedge and ship section at variable velocity Type The nature or genre of the resource info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Journal of Naval Architecture and Marine Engineering Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Creator An entity primarily responsible for making the resource Chandrasekaran, Srinivasan Yuvraj, Koshti Date A point or period of time associated with an event in the lifecycle of the resource 2013-06-11 Description An account of the resource Recent observations of the sea state that result in the undesirable events confirm the presence of extreme waves like freak waves, which is capable of causing irreparable damages to offshore installations and (or) create inoperable conditions to the crew on board. Knowledge on the extreme wave environment and the related wave-structure interaction are required for safer design of deep-water offshore structures. In the current study, typical long crested extreme waves namely:  i) New Year wave at offshore Norway; and ii) Freak wave at North Sea are simulated using the combined wave model. Dynamic response of the Tension Leg Platforms (TLP) under these extreme waves is carried out for different wave approach angles. Based on the analytical studies cared out, it is seen that the TLPs are sensitive to the wave directionality when encountered by such extreme waves; ringing type response is developed in TLPs which could result in tether pull out.DOI: http://dx.doi.org/10.3329/jname.v10i1.14518 Format The file format, physical medium, or dimensions of the resource application/pdf Identifier An unambiguous reference to the resource within a given context https://www.banglajol.info/index.php/JNAME/article/view/14518 10.3329/jname.v10i1.14518 Language A language of the resource eng Publisher An entity responsible for making the resource available Association of Naval Architects and Marine Engineers Relation A related resource https://www.banglajol.info/index.php/JNAME/article/view/14518/10974 Source A related resource from which the described resource is derived Journal of Naval Architecture and Marine Engineering; Vol. 10 No. 1 (2013); 59-68 2070-8998 1813-8535 Subject The topic of the resource TLP Extreme waves wave directionality long crest sea waves dynamic response Title A name given to the resource Dynamic analysis of a tension leg platform under extreme waves Type The nature or genre of the resource info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Analytical investigations Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Journal of Naval Architecture and Marine Engineering Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Creator An entity primarily responsible for making the resource Rahaman, Md. Mashiur Akimoto, H. Orihara, H. Zakaria, N.M.G. Shabnam, S. Date A point or period of time associated with an event in the lifecycle of the resource 2014-06-10 Description An account of the resource Shipbuilding is on the verge of blooming into the major foreign revenue-earning industry in Bangladesh. A number of export-oriented shipyards are developed to deliver different kinds of ships for local and international clients. For designing a ship, model testing facilities are required not only to predict power requirements but also to evaluate its performance in actual sea operation. At present, Bangladesh does not have this facility. Also carrying out model testing is very expensive and time consuming. Therefore, now-a-days most of the shipyards all over the world are using virtual or computational towing tank facility. Due to improvement of solution algorithm for handling non-linear problem and computational infrastructure, computational or virtual towing tank can be used as a replacement of physical towing tank experiments. In the present study, a numerical or computational towing tank technique named WISDAM which is developed at The University of Tokyo, Japan is described with its applicability in perspective of Bangladesh shipbuilding industries.DOI: http://dx.doi.org/10.3329/jname.v11i1.15619 Format The file format, physical medium, or dimensions of the resource application/pdf Identifier An unambiguous reference to the resource within a given context https://www.banglajol.info/index.php/JNAME/article/view/15619 10.3329/jname.v11i1.15619 Language A language of the resource eng Publisher An entity responsible for making the resource available Association of Naval Architects and Marine Engineers Relation A related resource https://www.banglajol.info/index.php/JNAME/article/view/15619/13334 Source A related resource from which the described resource is derived Journal of Naval Architecture and Marine Engineering; Vol. 11 No. 1 (2014); 1-14 2070-8998 1813-8535 Subject The topic of the resource Computational fluid dynamics RaNS virtual towing tank shipbuilding Title A name given to the resource Prospects of virtual or computational towing tank facility for the shipbuilding industry of Bangladesh Type The nature or genre of the resource info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Journal of Naval Architecture and Marine Engineering Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Creator An entity primarily responsible for making the resource Chamkha, Ali J. EL-Kabeir, S.M.M. Rashad, A.M. Date A point or period of time associated with an event in the lifecycle of the resource 2013-12-30 Description An account of the resource An analysis is performed to study the thermal radiation and chemical reaction effects on coupled heat and mass transfer by MHD natural convective boundary-layer flow of a micropolar fluid over a permeable truncated cone with variable surface temperature and concentration. A suitable set of dimensionless variables is used to transform the governing equations of the problem into a non-similar form. The resulting non-similar equations have the property that they reduce to various special cases previously considered in the literature. An adequate and efficient implicit, tri-diagonal finite difference scheme is employed for the numerical solution of the obtained equations. Various comparisons with previously published work are performed and the results are found to be in excellent agreement. A representative set of numerical results for the velocity, microrotation, temperature and concentration profiles as well as the local skin-friction coefficient, local wall couple stress, local Nusselt number and the local Sherwood number is presented graphically for various parametric conditions and discussed.DOI: http://dx.doi.org/10.3329/jname.v10i2.15898 Format The file format, physical medium, or dimensions of the resource application/pdf application/pdf Identifier An unambiguous reference to the resource within a given context https://www.banglajol.info/index.php/JNAME/article/view/15898 10.3329/jname.v10i2.15898 Language A language of the resource eng Publisher An entity responsible for making the resource available Association of Naval Architects and Marine Engineers Relation A related resource https://www.banglajol.info/index.php/JNAME/article/view/15898/12255 https://www.banglajol.info/index.php/JNAME/article/view/15898/26874 Source A related resource from which the described resource is derived Journal of Naval Architecture and Marine Engineering; Vol. 10 No. 2 (2013); 157-168 2070-8998 1813-8535 Title A name given to the resource Coupled heat and mass transfer by MHD natural convection of micropolar fluid about a truncated cone in the presence of radiation and chemical reaction Type The nature or genre of the resource info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Journal of Naval Architecture and Marine Engineering Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Creator An entity primarily responsible for making the resource Govindaraj, Moorthy Murthy, HN Narasimha Patil, Shivkumar K., Sudarsan O.R, Nandagopan K., Ajith Kumar Munishaiah, Krishna Date A point or period of time associated with an event in the lifecycle of the resource 2014-06-10 Description An account of the resource This paper reports the buckling behaviour of glass/vinylester polymer composite filament wound shells of underwater vessels. The shells were tested for buckling under hydrostatic loading and microstrains as a function of applied hydrostatic pressure were measured. Numerical analysis was performed for critical buckling pressure based on Block Lancoz buckling analysis and for Von-Mises stresses and strains based on static analysis using ANSYS. Von-Mises stresses corresponding to hydrostatic pressures were computed analytically by Reduced Stiffness Matrix method. The numerical results of critical buckling pressure for 10 mm thick vessels showed 7.12 % deviation from the experimental results. The microstrains predicted by FEA were in good agreement with the experimental strains. Von-Mises stresses predicted by FEA agreed well with the analytical computations.DOI: http://dx.doi.org/10.3329/jname.v11i1.16087 Format The file format, physical medium, or dimensions of the resource application/pdf Identifier An unambiguous reference to the resource within a given context https://www.banglajol.info/index.php/JNAME/article/view/16087 10.3329/jname.v11i1.16087 Language A language of the resource eng Publisher An entity responsible for making the resource available Association of Naval Architects and Marine Engineers Relation A related resource https://www.banglajol.info/index.php/JNAME/article/view/16087/13333 Source A related resource from which the described resource is derived Journal of Naval Architecture and Marine Engineering; Vol. 11 No. 1 (2014); 15-28 2070-8998 1813-8535 Subject The topic of the resource Critical Buckling Pressure FEA Reduced Stiffness Matrix Filament winding Title A name given to the resource Buckling behaviour of underwater vessels by experimental, numerical and analytical approaches Type The nature or genre of the resource info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Quasi-Experimental Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Journal of Naval Architecture and Marine Engineering Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Creator An entity primarily responsible for making the resource Ali, Md Ashim Suzuki, Kazuo Miyauchi, Sou Date A point or period of time associated with an event in the lifecycle of the resource 2013-12-24 Description An account of the resource Due to the increase of maritime transportation volume day by day it is necessary to design a ship hull having large carrying capacity with low resistance. In case of slow moving ships, usually wave breaking occurs in front of bow. A considerable portion of resistance occurs due to the energy dissipation of such wave breaking in case of Ultra Large Block coefficient Ship (ULBS) suggested by the authors. The key objective of this research work is to investigate the relationship between bow wave breaking and free surface disturbance function that may be used as a parameter for numerical prediction of bow wave breaking. In this regard, the experiments and numerical calculations have been carried out for six models of ULBS. From the results, it can be concluded that the wave breaking area in front of bow increases with the increase of surface integral of the square of free surface disturbance function, Froude number and block coefficient.DOI: http://dx.doi.org/10.3329/jname.v10i2.16104  Format The file format, physical medium, or dimensions of the resource application/pdf application/pdf Identifier An unambiguous reference to the resource within a given context https://www.banglajol.info/index.php/JNAME/article/view/16104 10.3329/jname.v10i2.16104 Language A language of the resource eng Publisher An entity responsible for making the resource available Association of Naval Architects and Marine Engineers Relation A related resource https://www.banglajol.info/index.php/JNAME/article/view/16104/12239 https://www.banglajol.info/index.php/JNAME/article/view/16104/26879 Source A related resource from which the described resource is derived Journal of Naval Architecture and Marine Engineering; Vol. 10 No. 2 (2013); 69-80 2070-8998 1813-8535 Subject The topic of the resource Wave breaking Free Surface Disturbance (FSD) function Rankine Source Method Ultra Large Block coefficient Ship (ULBS) Title A name given to the resource Study on bow wave breaking around ultra large block coefficient ship Type The nature or genre of the resource info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion