Results 21 to 30 of about 2,033 (217)

A Model of Ship Auxiliary System for Reliable Ship Propulsion

open access: yesPromet (Zagreb), 2012
The main purpose of a vessel is to transport goods and passengers at minimum cost. Out of the analysis of relevant global databases on ship machinery failures, it is obvious that the most frequent failures occur precisely on the generator-running diesel ...
Dragan Martinović   +2 more
doaj   +1 more source

A Study on the Propulsion Performance in the Actual Sea by means of Full-scale Experiments [PDF]

open access: yesTransNav, 2013
The IMO has adopted Energy Efficiency Design Index (EEDI), Ship Energy Efficiency Management Plan (SEEMP) and Energy Efficiency Operational Indicator (EEOI) in order to reduce GHG emissions from international shipping.
Jun Kayano   +3 more
doaj   +1 more source

Marine Propulsion System Failures—A Review

open access: yesJournal of Marine Science and Engineering, 2020
Failures of marine propulsion components or systems can lead to serious consequences for a vessel, cargo and the people onboard a ship. These consequences can be financial losses, delay in delivery time or a threat to safety of the people onboard.
Goran Vizentin   +4 more
doaj   +1 more source

UNCERTAINTY QUANTIFICATION OF SELF-PROPULSION ANALYSES WITH RANS-CFD AND COMPARISON WITH FULL-SCALE SHIP TRIALS

open access: yesBrodogradnja, 2022
RANS-CFD is a well-established tool with widespread use in maritime industry and research. Valuable information might be extracted from the results of such simulations in terms of ship resistance and flow field variables.
Ahmet Ziya Saydam   +3 more
doaj   +1 more source

Uncertainty Analysis of Ship Model Propulsion Test on Actual Seas Based on Monte Carlo Method

open access: yesJournal of Marine Science and Engineering, 2020
As a new testing technology, large-scale ship model tests on the sea are advantageous in addressing the scale effect in ship models and in simulating ship navigation conditions.
Guangli Zhou   +3 more
doaj   +1 more source

Speed-loop bandwidth design method for controller parameters of ship hydrogen storage DC electric propulsion system

open access: yesZhongguo Jianchuan Yanjiu, 2023
ObjectivesThis paper aims to study the problems that the external electrical characteristics of a hydrogen fuel cell are soft, its dynamic characteristics are poor and its system stability is susceptible to the influence of propulsion load in marine ...
Wujian SONG   +4 more
doaj   +1 more source

The Propulsion of Ships [PDF]

open access: yesScientific American, 1918
n ...
openaire   +2 more sources

Speed control of marine main thruster motor based on super-twisting sliding mode variable structure

open access: yesAdvances in Mechanical Engineering, 2023
In order to solve the problem of torque-ripple in the control system of ship main propulsion motor controlled by direct torque control, this paper proposes a super-twisting sliding mode calculation method based on the traditional sliding mode controller,
Yan Langtao   +3 more
doaj   +1 more source

Propulsion performances study for a chemical tank

open access: yesAnnals of "Dunărea de Jos" University of Galaţi: Fascicle XI Shipbuilding, 2021
The design of a propulsion system for each ship must take into consideration a large number of factors. Some important factors that will lead to obtaining an efficient propulsion system are: the integration of a large number of elements in a functional ...
Mirela-Roxana Chiroșă   +1 more
doaj   +1 more source

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