added resistance
Experimental determination of added resistance due to barnacle fouling on ships by using 3D printed barnacles
... 3D printed artificial barnacles were attached on flat plates and towed over a range of Reynolds numbers in order to be able to calculate added resistance and power requirements of ships due to calcareous ...
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Numerical studies on added resistance and motions of KVLCC2 in head seas for various ship speeds
... the added resistance computed from the wave energy and the momentum fl ux generated by a ship and is evaluated across a vertical control surface of infinite radius surrounding the ...the added ...
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Numerical studies on non-linearity of added resistance and ship motions of KVLCC2 in short and long waves
... the added resistance in short waves is a challenging problem due to the sensitivity of the experimental setup to measure very small quantities and the uncertainties in the measured data (Liu and ...
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Estimation of added resistance and ship speed loss in a seaway
... ship resistance and propulsion performance in calm water during the ship design stage even though there have recently been some changes in hull form design and optimization, from a single design draught and speed ...
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Added Resistance Prediction of KVLCC2 in Oblique Waves
... predicting resistance is quite limited, thus, the results are shown here only as a comparison for ...predicted added resistance coefficient in the head and oblique waves using ...
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Full-scale unsteady RANS CFD simulations of ship behaviour and performance in head seas due to slow steaming
... total resistance coef fi cients in waves, the devia- tions between EFD and CFD varied from ...the added resistance coef fi cients were under- predicted by CFD, falling within circa 10% of those from ...
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Further development of ship added resistances in head waves
... Added resistance in waves is another component of ship’s ...making resistance. Basically, added resistance in waves is another partial component of the resistance that ...
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Sensitivity analysis of the tool for assessing safe manoeuvrability of ships in adverse sea conditions
... the resistance forces have been calculated using an empirical ...water resistance and wind added resistance are calculated using ITTC regression methods (ITTC, 2014) while the wave ...
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Experimental determination of added hydrodynamic resistance caused by marine biofouling on ships
... This paper presents a novel experimental approach towards establishing a method to predict the added resistance caused by the calcareous fouling. An extensive series of towing tests using the flat plates ...
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Experimental determination of added hydrodynamic resistance caused by marine biofouling on ships
... frictional resistance of flat plates of ship lengths, provided that the roughness function behaviour of such fouling is known (Schultz, ...frictional resistance, using his experimental data, by means of the ...
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URANS Predictions of Resistance and Motions of the KCS in Head Waves
... the added resistance coefficient to compare well against the experiments in several conditions but the amplitude of the resistance signal was mostly under ...total resistance by 50% to 90% but ...
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New horizons in marine coatings
... the resistance and effective power of ...predicted. Added resistance diagrams were then plotted using these predictions, and powering penalties for these ships were calculated using the generated ...
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Preparation and Properties of Ni-W-rGO Composite Coatings
... In this study, GO was prepared by a modified Hummers method, and Ni-W-rGO composite coatings were electrodeposited onto N80 steel plates. The structure of GO and graphene in composite coatings was analyzed by Raman ...
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Durability Properties of Self Compacting Concrete using Silica Fume: A Review
... First of all before starting sorptivity test, all the weights and concrete specimen’s area should be measured. Specimen is to be placed over a tray of water which should have 20°C and at a depth of 2mm from ground level. ...
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Influence of Long Chain Free Fatty Acids on the Thermal Resistance Reduction of Bacterial Spores
... heat resistance of ...heat resistance of micro- organisms ...When added to recovery media, this stressful effect re- duces the apparent heat resistance of bacterial spores [23, ...
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Effect of Phytoproteins with bio-enhancers on agents Causing Natural Infection and Reducing Yield of Some Vegetable/Pulse by using Boerhaavia diffusa and Clerodendrum aculeatum
... were added separately to each of the phytoproteins at a strength of 2% Observations on disease incidence with respect to plant height, flowering and fruiting were made ...was added to the supernatant with ...
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Improved Medium for Sporulation of Clostridium perfringens pdf
... When activated carbon was added to the proposed medium, four of the five strains produced spores which had an approximately equivalent or slightly greater heat resistance than the greate[r] ...
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Effect of Co0.5Zn0.5Fe2O4 Nanoparticle on AC Susceptibility and Electrical Properties of YBa2Cu3O7-δ Superconductor
... XRD patterns for x = 0, 0.1 and 0.2. Figure 1(b) shows the patterns for x = 0.3 and 0.4. No systematic change in the lattice parameters was observed (Table 1). The lattice parameters are a = 3.826 Å, b = 3.893 Å and c = ...
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Chemical Resistance of Nano Silica Added Concrete
... Ordinary Portland Cement (OPC) 53 grade and colloidal nano silica were employed for the preparation of concrete. The particle size of nano silica particles varied from 5 to 40 nm showing that it was much finer than ...
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Effects of Particle Size on Mechanical Properties of a TiC Containing Tool Steel by Hot Isostatic Press
... 0–25 mass% of 2 um and 20 um TiC powders are added to vanadium and chromium containing steel powders to form metal matrix composite tool steels. The metal and ceramic powders are encapsulated and hot isostatically ...
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