Results 251 to 260 of about 27,793,750 (279)
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Computational analysis on B-series propeller performance in open water
Marine Systems & Ocean Technology, 2020This paper presents a computational fluid dynamics (CFD) simulation to predict thrust coefficient ( $${K_T}$$ ), torque coefficient ( $${K_Q}$$ ) and efficiency ( $${\eta }$$ ) in open-water condition, whilst a hydrodynamic description around the propeller’s blade underlying the rationale behind the results is explained.
N. Amira Adam +3 more
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Computational analysis of self-pitching propellers performance in open water
Ocean Engineering, 2013This paper presents a numerical study on self-pitching propellers (SPP) in open water aimed at the prediction of the performance in terms of equilibrium pitch-setting and delivered thrust and torque. Differently from other types of propeller, SPP-blades are able to freely rotate about the pivot axis up to the spindle moment due to the centrifugal ...
Leone Stefania +3 more
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A practical technique for improvement of open water propeller performance
Proceedings of the Institution of Mechanical Engineers, Part M: Journal of Engineering for the Maritime Environment, 2011A practical technique for the improvement of open water propeller performance has been described by using a vortex lattice lifting line method together with a lifting surface method. First, the optimum circulation distribution, giving the maximum thrust–torque ratio, has been computed along the radius of the propeller for given thrust and chord lengths,
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Grid Influence on the Propeller Open-Water Performance and Flow Field
Ship Technology Research, 2008A grid sensitivity study for a conventional propeller in open-water condition uses three grids and compares with experimental data. Thrust and torque are rather insensitive to the grid resolution, but local quantities such as pressure coefficient and velocity are grid sensitive.
Nabila Berchiche, Carl-Erik Janson
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Performing Riserless Subsea Operations Utilizing Coiled Tubing in Open Water
SPE/ICoTA Coiled Tubing & Well Intervention Conference & Exhibition, 2015Abstract Due to the versatility of modern coiled tubing (CT) operations coupled with the increasing demand for deepwater activity, CT is becoming a common conveyance method to perform subsea operations without the need of a marine riser or lubricator connected to the subsea wellhead. These operations utilize the CT string as an umbilical
Beau Lasseigne, BJ Lindsey, James Larke
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Applying periodic boundary conditions to predict open water propeller performance
Journal of Marine Science and Application, 2010Mathematical models of propellers were created that investigate the influence of periodic boundary conditions on predictions of a propeller’s performance. Thrust and torque coefficients corresponding to different advance coefficients of DTMB 4119, 4382, and 4384 propellers were calculated.
Chao Wang +3 more
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Evaluating the Performance of Open-Hole, Perforated and Fractured Water Injection Wells
Proceedings of SPE European Formation Damage Conference, 1995Abstract The performance, i.e. the half-life of water injectors, is very important to the economics of water injection projects. A simulator is presented to predict the decline in injectivity of water injection wells. Equations are presented that allow us to model open-hole and perforated completions as well as fractured wells.
Shutong Pang, Mukul M. Sharma
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Design, Cavitation Performance, and Open-Water Performance of a Series of Research Skewed Propellers
1971Abstract : Cavitation tunnel and open-water results are presented for a series of skewed propellers that were designed by lifting-surface methods. The four model propellers had maximum projected skew at the blade tip equal to 0, 36, 72, and 108 deg.
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Experimental investigations and CFD validation on the open-water performance of poded propulsor
2011 IEEE International Conference on Computer Science and Automation Engineering, 2011A series of experimental investigations on the open-water performance for poded propulsor carried out by H101 dynamical instrument in a cavitation tunnel. Simultaneity, mathematical models of poded propulsor was created and computed by the RANS formula and RNG k − e model based on sliding meshes.
Li Sheng, Ying Xiong, Song Wang
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Machine learning techniques for ship performance predictions in open water and ice
202131st International Ocean and Polar Engineering Conference, June 20-25, 2021, Rhodes ...
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