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Keywords: variation
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Journal Articles
J Ship Res 67 (03): 174–183.
Paper Number: SNAME-JSR-07220021
Published: 19 September 2023
... france government freight & logistics services amplitude europe government real time system threshold equation month 2022 detection variation coefficient united states government ship container ship sery journal proceedings validation assessment c11-class container ship hysteresis...
Journal Articles
J Ship Res 67 (01): 1–12.
Paper Number: SNAME-JSR-03200020
Published: 06 March 2023
... between the dynamic positioning (DP) system and the jacking system. Current DP systems operate without any sensors identifying the hydrodynamic force variations on the legs and spudcans, which vary between different leg and spudcan designs. When the spudcan is near to the sea bottom, the hydrodynamic...
Journal Articles
J Ship Res 13 (01): 53–60.
Paper Number: SNAME-JSR-1969-13-1-53
Published: 14 December 2022
... are important, even at submergence depths of several chord lengths. 21 8 1967 11 7 1968 11 7 1968 14 12 2022 14 12 2022 Copyright 1969, The Society of Naval Architects and Marine Engineers marine transportation configuration variation ship research artificial...
Journal Articles
J Ship Res 66 (01): 91–107.
Paper Number: SNAME-JSR-09190055
Published: 28 March 2022
... conditions were set by changing the advance speed (U) and impeller revolution rate (n) for the advance ratio (J) variation. Three U cases were chosen: zero, 50% UD, and 100% UD, where UD is the design advance speed in model scale. The corresponding Froude number (Fr) with 100% UD was .981. The revolution...
Journal Articles
J Ship Res 65 (03): 243–256.
Paper Number: SNAME-JSR-12190076
Published: 24 September 2021
...Nicola Petacco; Giuliano Vernengo; Diego Villa; Antonio Coppedé; Paola Gualeni The sensitivity of ship stability performance in waves to geometric variation has been investigated by means of a simulation-based design framework. The study was devoted to assess the influence of hull geometry...
Journal Articles
J Ship Res 63 (02): 94–107.
Paper Number: SNAME-JSR-2019-63-2-94
Published: 01 June 2019
...Shu Xia Bu; Min Gu; Moustafa Abdel-Maksoud Providing a reliable numerical tool for the prediction of parametric roll and pure loss of stability is a difficult task. It is acknowledged that the occurrence of these two failure modes is mainly attributed to the variation of roll restoring arm, which...
Journal Articles
J Ship Res 61 (02): 91–106.
Paper Number: SNAME-JSR-2017-61-2-91
Published: 01 June 2017
.... The Society of Naval Architects and Marine Engineers Artificial Intelligence generating curve hull Upstream Oil & Gas section curve application june 2017 representation optimization problem variation geometry optimization algorithm constraint optimization control point deformation...
Journal Articles
J Ship Res 60 (04): 203–218.
Paper Number: SNAME-JSR-2016-60-4-203
Published: 01 December 2016
..., was the dominant contribution to open water efficiency gains from PBCF rather than a decrease in net torque. Global force and wake fields were also measured in response to design parameter variations of PBCF, i.e., fin chord length, fin span height, pitch angle, and phase lag. In the cases of pitch angle and fin...
Journal Articles
J Ship Res 60 (04): 187–202.
Paper Number: SNAME-JSR-2016-60-4-187
Published: 01 December 2016
... potential flow over the hydrofoil predicting its hydrodynamic characteristics, including the vapor-cavity interface. Shape variations are obtained by an ad hoc parametrization scheme by composite B-spline curves whose control points represent the design variables to the hydrodynamic optimization problem...
Journal Articles
J Ship Res 60 (01): 30–47.
Paper Number: SNAME-JSR-2016-60-1-30
Published: 01 March 2016
... and trims were obtained by the CFD computations for the model to provide data source to analyze the influence of the trim on the resistance. Results indicate that the variation of wave-making resistance due to trim dominates that of the total resistance. Finally, the resistance data for the model were...
Journal Articles
J Ship Res 59 (03): 145–161.
Paper Number: SNAME-JSR-2015-59-3-145
Published: 01 September 2015
.... The Society of Naval Architects and Marine Engineers Catamaran immersion maximum relative bow immersion bow velocity frequency maximum relative bow velocity bow immersion wave encounter frequency encounter frequency two-dimensional filling height variation relative bow velocity september 2015...
Journal Articles
J Ship Res 59 (01): 1–10.
Paper Number: SNAME-JSR-2015-59-1-1
Published: 01 March 2015
... in the results is illustrated with an application where measured wave responses are used to predict the future variation in the responses within the next 5–30 seconds. The main part of the article is devoted to the application of the First Order Reliability Method for derivation of critical wave episodes...
Journal Articles
J Ship Res 58 (03): 117–129.
Paper Number: SNAME-JSR-2014-58-3-117
Published: 01 September 2014
... variation of a naval vessel, powered by a gas turbine as part of an innovative CODLAG system, is simulated and analyzed by means of a detailed and validated numerical code. A sensitivity analysis regarding the influence of the main components deterioration (gas turbine, propellers, and ship hull...
Journal Articles
J Ship Res 58 (02): 97–105.
Paper Number: SNAME-JSR-2014-58-2-97
Published: 01 June 2014
.... However, the ships do not encounter regular waves in the ocean. So, it is necessary to study how important parametric roll is in irregular seas. To study this, it is first important to model the variation of metacentric height in irregular waves, which is nonlinear as a result of the influence...
Journal Articles
Journal Articles
J Ship Res 55 (03): 185–195.
Paper Number: SNAME-JSR-2011-55-3-185
Published: 01 September 2011
.... Validation of the methodology is presented for the benchmark case of accelerated flow past sphere and infinitely long circular cylinder in cross-flow for which analytical solutions of the added mass problem are well known. september 2011 variation vehicle translational Fluid Dynamics Simulation...
Journal Articles
J Ship Res 55 (01): 1–18.
Paper Number: SNAME-JSR-2011-55-1-1
Published: 01 March 2011
... angles a and a' at the top and bottom waterlines, and the rake angle 8. The corresponding bow wave similarly depends on four parameters: the draft-based Froude number F and the three angles a, a', and 8. An extensive parametric study, based on thin-ship theory, is performed to explore the variations...
Journal Articles
J Ship Res 54 (03): 209–223.
Paper Number: SNAME-JSR-2010-54-3-209
Published: 01 September 2010
... generators. Circumferential distortion improvements were assessed using a distortion parameter, harmonics of the velocity variation, and considerations of rotor blade incidence variation. The vortex generators were found to have little effect on local lip pressures and consequently lip cavitation inception...
Journal Articles
J Ship Res 54 (02): 109–119.
Paper Number: SNAME-JSR-2010-54-2-109
Published: 01 June 2010
... that reduced the skin drag by more than 95% over the extent of the cavity, including the cavity closure. drag reduction experiment flux beach gas injection method variation cavitation number cavity closure represent velocity partial cavity Upstream Oil & Gas air flux stable cavity closure...
Journal Articles
J Ship Res 54 (02): 120–132.
Paper Number: SNAME-JSR-2010-54-2-120
Published: 01 June 2010
... are often within a few percent of the measured values of the resistance. 1 6 2010 1 6 2010 2010. The Society of Naval Architects and Marine Engineers Upstream Oil & Gas variation ship research ship model tank rms variation critical value Frequency parameter june 2010...

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