In this paper the resistance of one ship with installing wing and wing’s thrust have been studied in both theory and simulation by fluent software. The influence of ship resistance which from leeway angle and down helm was analyzed on the basis of the examination result of ship model test.
In order to research on the disturbance characteristics of marine diesel engine with wing-assisted system, mathematical models of ship, diesel engine, propeller and wing were established. Disturbance characteristics of marine diesel engine which using the wing-assisted system was simulated by matlab/simulink software. The output torque and speed curves of the marine diesel engine at different conditions were obtained, by inputting different wing thrust fluctuation signal. The results can provide some reference value to the wing-assisted technology in the application of ocean transport ships, and which has a certain dominating significance for dynamic coupling of diesel-wing ship.
In this paper, a wing-diesel ship was taken as simulation object, and the wing-diesel ship propulsion system was simulated by the Mat lab software. The influence laws of characteristic parameters of the ship propulsion system were analyzed take step waves disturbance of wing thrust for example. Then, the optimized plan of the main engine control mode of the ship was put forward.
The new regulations on emissions and energy efficiency in the amendment to MARPOL Annex VI will become effective on January 1, 2013. The old-type marine main engine is difficult to come up to the new standard. Determining how to reduce the NOx, CO2 emissions and improve energy efficiency of ships draws a lot attention. The adaptability of marine dual fuel engine on the new regulations, EEDI and EEOI was studied, and the prospect of dual fuel engine is analyzed in this paper. To some extent, it has guiding meaning in the development of the marine main engine.
To research the matching of main engine and turbocharger on sail-assisted ship, a 76000 deadweight tonnage cargo ship with 5S60MC main engine and TCA66 turbocharger was selected. The simulation model of working process of the engine was established, with AVL BOOST software, and verified by bench test results. Then, the model was used to analyze the matching of main engine and turbocharger, at constant speed mode of the main engine and constant speed mode of the ship. The results show that, the matching of main engine and turbocharger is acceptable, on the selected sail-assisted ship. However, special attentions should be paid to the turbocharger when the engine load is above 85.6% of the rated power at constant speed mode of the ship, to avoid surge of the compressor.
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