Results 41 to 50 of about 4,709 (201)
, 2017 We discuss the observational properties of pulsar wind nebulae (PWNe) linking them to the injected (at the termination shock) electron spectral energy distribution and parameters of pulsar magnetospheres.
Chastain, Sarah +3 more
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Application of Machine Learning for Bulbous Bow Optimization Design and Ship Resistance Prediction
Applied SciencesResistance is a key index of a ship’s hydrodynamic performance, and studying the design of the bulbous bow is an important method to reduce ship resistance.
Yujie Shen +6 more
doaj +1 more source
Engineering Applications of Computational Fluid Mechanics, 2016 The main objective of this article is to describe an innovative methodology for the hydrodynamic optimization of a ship bulbous bow which considers multiple operating conditions.
Yu Lu, Xin Chang, An-kang Hu
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, 2006 "The Duck" is a complicated non-thermal radio system, consisting of the energetic radio pulsar B1757-24, its surrounding pulsar wind nebula G5.27-0.90 and the adjacent supernova remnant (SNR) G5.4-1.2.
Achterberg A. +16 more
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State of the Art in Swath Bathymetry Survey Systems [PDF]
, 1988 In the last decade, advances in real-time computing and data storage capabilities have led to significant improvements in bathymetric survey systems and the single point echo-sounder has now been replaced by a variety of highresolution swath mapping ...
de Moustier, Christian
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Numerical simulation of viscous flow around a tanker model [PDF]
, 2017 In this paper, numerical simulation of the viscous flow around a tanker model was carried out utilizing software package STAR-CCM+. A mathematical model based on Reynolds Averaged Navier-Stokes equations, k-ε turbulence model and Volume of Fluid method ...
Degiuli, Nastia +2 more
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Research on bulbous bow optimization based on the improved PSO algorithm [PDF]
China Ocean Engineering, 2017 On order to reduce the total resistance of a hull, an optimization framework for the bulbous bow optimization was presented. The total resistance in calm water was selected as the objective function, and the overset mesh technique was used for mesh generation. RANS method was used to calculate the total resistance of the hull.
Zhang, Sheng-Long +4 more
openaire +3 more sources
Experimental studies on seakeeping and maneuverability of ships in adverse weather conditions [PDF]
, 2017 The introduction of the energy efficiency design index (EEDI), which is applicable for various types of new-built ships after January 1,2013, raised concerns regarding the sufficiency of propulsion power and steering devices to maintain maneuverability ...
Cura-Hochbaum, Andrés +6 more
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Scenario based optimization of a container vessel with respect to its projected operating conditions
International Journal of Naval Architecture and Ocean Engineering, 2014 In this paper the scenario based optimization of the bulbous bow of the KRISO Container Ship (KCS) is presented. The optimization of the parametrically modeled vessel is based on a statistically developed operational profile generated from noon-to-noon ...
Wagner Jonas +2 more
doaj +3 more sources
Whales, dolphins, and porpoises of the western North Atlantic: a guide to their identification [PDF]
, 1976 This is an identification guide for cetaceans (whales, dolphins, and porpoises). It was designed to assist laypersons in identifying cetaceans encountered in the western North Atlantic Ocean and was intended for use by ongoing cetacean observer programs.
Caldwell, David K. +4 more
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