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Cooperation on CO2 capture
AuthorsJOT
Shelf LocationContact IMarEST directly for access
AbstractAs a result of an expert seminar held in Oslo on November 22nd and 23rd Norwegian and French researchers will now cooperate more closely on developing solutions for the capture and storage of CO2. Together companies and organisations from the tweo countries will have more impact in the EU research programmes
AuthorsPublisherJOT
IMarEST
Shelf LocationDate publishedContact IMarEST directly for access
2008
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Estimation of wind forces on offshore drilling platforms
AuthorsJ E Aguirre
Date published1974
AbstractMathematical study of windforces on offshore drilling platforms/rigs considers - wind characteristics; maximum wind; force orientations; force coefficients and forces on single members trusses lattice towers fittings special structures/helideck deck structures; cross wind forces; drag lift and ice accretion.
AuthorsJ E Aguirre
Date published1974
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First flow speed engine to run on emulsified fuel
AuthorsMER
Date published1982
AbstractAn emulsified fuel system designed by D A Holland and based on the Emulsa mixing unit has been fitted to the slow speed propulsion system of the fruit carrier MV Mindanao on the high pressure side of the fuel system. The results of initial tests are presented and discussed. fuel savings are considered.
AuthorsMER
Date published1982
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Full scale steering experiments on three ships and comparison with model tests
AuthorsE M L Smith-Keary ; F H Todd
Date published1934
AbstractResults of full scale steering tests made on the in-service cargo ships Dolius (twin screw steam) City of Lyons (single screw steam) and Highland Monarch (twin screw motor) are compared with those made on scale models of the ships (free and constained) at the William Froude Laboratory.
AuthorsE M L Smith-Keary ; F H Todd
Date published1934
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Impact of hammock formations on vertical obstructions
AuthorsStanislav A Vershinin ; Pavel A Truskov ; Konstantin V Kouzmitchev
Date published2004
AbstractThis paper considers scenarios of head-on impact on vertical obstacles and destruction of hummock subsurface parts represented as a discrete spherical-element medium. The issues analyzed include the 2-phase nature of interaction and destruction of a loose and connected medium and also the cyclic pattern of loading and dynamic effects emerging in interaction with the hummock keel.
AuthorsStanislav A Vershinin ; Pavel A Truskov ; Konstantin V Kouzmitchev
Date published2004
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Influences of high viscous furl on diesel engine injection characteristics
AuthorsH Fujiwara
Date published1989
AbstractThe effects of heavy fuel oil Kinetic viscosity on the injection characteristics of pressure and volume and on flow coefficients throughout the injection system were studied experimentally in a test apparatus by mathematical simulation and through observations of a test engine.
AuthorsH Fujiwara
Date published1989
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Making an impact on noise control (Cruise and Passenger Ship Technology Supplement)
AuthorsShipping World & Shipbuilder
PublisherIMarEST
AbstractAs machinery and engine noise on cruise ships has been diminished greater focus centres on human activity. Lars Thiele Senior Acoustical Consultant presents the Odegard & Danneskiold-Samsoe A/S approach
AuthorsDate publishedShipping World & Shipbuilder
2008
PublisherIMarEST
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National Maritime Institute July 1982 NMI R 136 Wind loading on offshore structures - a summary of wind tunnel studies
AuthorsB L Miller ; M E Davies
PublisherNMI
AbstractItems include - fluid dynamics wind tunnel technique wind load estimation wind forces on concrete gravity platforms wind forces on a steel jacket in tow-out configuration.
AuthorsDate publishedB L Miller ; M E Davies
1982
PublisherNMI
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Noise and its control on small and medium size vessels
AuthorsD Hirayama
Date published1979
AbstractEquipment and techniques for measuring and analysing vibration and noise on vessels at sea are described with investigations of conditions on-board a small fishing training vessel and a medium sized cargo ship reported.
AuthorsD Hirayama
Date published1979
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Reflections on planing hull technology
AuthorsDonald L Blount
Date published2006
AbstractMany aspects of planing hull design have reached a mature level of definition. This maturing process resulted from generations of naval architects designers builders and operators pushing performance boundaries often with great success. The author's personal reflections on hydrodynamic planing hull technology are presented based on some 39 years of experience. Dimensionless speed hull loading resistance flow pattern propulsive data and state-of the-art performance are all covered.
AuthorsDonald L Blount
Date published2006
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RoRo 84 Sessions 1-5 - The 7th International Conference on Marine Transport using Roll-on/Roll-off Methods 9-11 May 1984 Nice Volume 1 of 3
AuthorsRoRo
Shelf Location215f
AuthorsPublisherRoRo
BML
Shelf LocationDate published215f
1984
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Study on fracture strength assessment of structural components
AuthorsS Machida ; H Yoshinari ; Y Hagiwara
Date published1994
AbstractA comparative study of the validity and accuracy of the failure (fracture strength) assessment methods used by the Japan Welding Engineering Society (CTOD based on elastic-plastic fracture mechanics) and the British Standards Institution (FAD(R6) based on failure assessment diagrams) was carried out using wide plate specimens with longitudinal or transverse stiffening and with hole-edge cracks.
AuthorsS Machida ; H Yoshinari ; Y Hagiwara
Date published1994
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The Scottish Office Environment Department The Braer Report - The Ecological Steering Group on the Oil Spill in Shetland
AuthorsThe Scottish Office
PublisherThe Scottish Office
AbstractItems include - Nature and work of the Steering Group Nature of the oil spill Short-term impacts on the environment Longer-term monitoring Work on wider applications
AuthorsDate publishedThe Scottish Office
1993
PublisherThe Scottish Office
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Time for leadership on security
AuthorsSW&SB
PublisherIMarEST
AbstractPeter Hinchcliffe of the International Chamber of Shipping has called on governments to take the lead on the implementation of the ISPS Code. Key decisions are still taking too long to make and are not being communicated to the shipping industry which is committed to the 1st July 2004 deadline.
AuthorsDate publishedSW&SB
2004
PublisherIMarEST
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Twenty-fifth report: Turning the tide : addressing the impact of fisheries on the marine environment
AuthorsTom Blundell
Shelf Location226c
AbstractThis report aims to advise on matters, both national and international, concerning the pollution of the environment; on the adequacy of research in this field; and the future possibilities of danger to the environment.
AuthorsPublisherTom Blundell
London; TSO
ISBN number101639228
Shelf LocationDate published226c
2004
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Unique spray-on barrier to keep fire at bay
AuthorsNA
Date published1993
AbstractDendamix a fibrous spray-on coating based on Rockwood and cellulose with binders and adhesives has been developed by American Sprayed Fibres Inc with Chalgrove Coatings Group Ltd for fire protection applications. Results of testing for deck and bulkhead fire resistance and for smoke and toxic fume emissions are reported.
AuthorsNA
Date published1993
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What's going on inside your ship?
AuthorsMER
PublisherIMarEST
AbstractEvery marine coastal and offshore vessel or fixed installation depends on systems with rotating or moving parts ranging from motors fans and pumps to turbines and turbochargers. Phil Burge SKF's Communications Manager asks if you really know what's going on inside your engines and power systems.
AuthorsDate publishedMER
2010
PublisherIMarEST
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Non-linear finite element simulations of ice sheet forces on conical structures
AuthorsBjornar Sand ; Lennart Fransson
Date published2005
AbstractDesign of offshore structures in Arctic waters is strongly dependent on local and global ice loads. The prediction of ice forces on structures relies heavily on a thorough understanding of ice mechanics as well as on an in-depth knowledge of interaction between ice features and structures. Interaction between an ice sheet and fixed conical structures is considered. The ice sheet as well as the structure is discretised by finite elements. The interaction between the ice sheet and the conical structure is simulated using a special contact algorithm which makes it possible to follow the gradually developing contact between the ice sheet and the structure. As the configuration of the ice sheet changes during the interaction process the buoyancy forces change accordingly. This process is traced by introducing a continuous non-linear foundation model to include the effects of buoyancy forces and specific weight of the ice. The mechanical behaviour of the ice is estimated using two different constitutive models. In the first material model the ice is treated as an isotropic brittle material while in the second model the ice is treated as a transversal isotropic brittle material. When the state of stress at a material point in the ice reaches the failure surface cracking or crushing is said to occur. After cracking or crushing the post-peak behaviour of the ice is estimated as a rigid plastic material. The results obtained during the finite element simulations are compared with analytical methods to calculate ice sheet forces on conical structures.
AuthorsBjornar Sand ; Lennart Fransson
Date published2005
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The influence of full-flow penetrometer area ratio on penetration resistance and undrained and remoulded shear strength
AuthorsNicholas J Yafrate ; Jason T DeJong ; Don J DeGroot
Date published2007
AbstractThe development of full-flow penetrometers including the T-ball and plate for in situ measurement of undrained intact and remoulded shear strength has required research regarding the conditions necessary to induce 'full flow' around the penetrometer. A primary parameter governing this condition is the ratio of the probe to drill string-projected area termed 'probe area ratio'. Initial investigations assumed area ratios of 10:1 are adequate to minimise the influence of the drill strong on the formation of full flow of soil around the probe. The aim here is to quantitatively assess the influence of the projected area ratio on penetration resistance. An in situ research programme with four T-bar lengths representing area ratios of 2:1 5:1 10:1 and 15:1 was carried out in a lightly over-consolidated clay for evaluation of the effects of area ratio on the interpreted undrained intact and remoulded strengths. The results are also compared with full displacement piezocone and 10:1 ball penetration tests. Results indicated that area ratios of 5:1 and greater appear to minimise the effects of the drill strong on measured penetration and extraction resistances. A reduction in the length of the T-bar resulting from the use of area ratios of less than 10:1 is attractive practical option as it allows for field deployment with seabed units in smaller diameter drill casings and reduced bending loads on the loadX16438
AuthorsNicholas J Yafrate ; Jason T DeJong ; Don J DeGroot
Date published2007
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A numerical study on the geometry of jet injection nozzle of a Coanda control surface
AuthorsDae Won Seo ; Joung Hyun Kim ; Hyochul Kim et al.
Date published2008
AbstractThe Coanda effect is a physical phenomenon which has been applied to various fields in aerodynamics. The Coanda effect demonstrates that a flow tangential to a solid surface generates low-pressure fields around it and consequently the flow remains tangential even along the curved surface as far as the pressure force surpass the centrifugal force of the flow turning about the surface. The many studies on the Coanda effect that have been carried out so far focus on the spiral jet type. The effect of the gap clearance of jet injection slit and the local curvature of the surface at the slit have been carefully surveyed. Studies have also been carried out on the effect of the jet blowing angle to the surface at the slit. The conventional practice of installing rudders downstream of propeller may not guarantee sufficient rudder force for proper manoeuvring of a ship at low speed. In previous studies the variation of the cross-sectional shape of a rudder and the addition of appendages have been investigated to improve the rudder performance. In other studies a water jet has been injected tangentially over rudder surfaces with or without a flap to enhance the rudder force by the resulting Coanda effect. In the present paper the proper locations of the slit and water intake of the gap between the horn and rudder surface have been numerically surveyed to support a design of a Coanda rudder. For verification of the numerical method98765 Numerical study on unsteady flow around an underwater vehicle with two pairs of mechanical pectoral fins
AuthorsDae Won Seo ; Joung Hyun Kim ; Hyochul Kim et al.
Date published2008