A Technical Economic and Analytic Study of the Efficiency of Some Elements of Marine Power Plants

The technical and economical indexes of most maritime companies in developed countries have improved due to the strict application of the administrative and technical regulations in order to operate their ships, especially after the International Safety Management code (ISM) has come into force. With this in mind this paper studies the mechanisms of technical operation in Syrian maritime companies in order to have a realization of the actual reality of technical operations, and also to reach a better status. Data from various Syrian maritime companies are collected and assessed, from which several results are obtained which, when taken into consideration, are believed to lead to improving the technical, economic, and environmental circumstances surrounding the technical operation of ships in Syria. They will also lead to lessening the stoppages that result from malfunctions in these ships, and ultimately reaching a higher level of technical operation and achieving superior outcomes

2-D Numerical Modeling Of Oil Spill Spreading From Ships Over The Sea Surface

As oil spells, it is important to act as quickly as possible in order to minimize damages that can affect people and natural life. Thus, for the necessary operations to be done on time following an accident, numerical simulation of oil spell is an essential tool. The purpose of this paper is to develop a 2-D numerical model for the main operations that control and affect the trajectory and fate of an oil spill. Two additional operations had been considered, those are evaporation and dissolution which lead to lose some of the spilled oil even in air or water column. Afterwards, oil spill scenarios had been created and spreading of an oil spill, whose density and initial position are known, had been examined. Using MATLAB, flow simulations had been made and results had been discussed.

Studying of the possibilities of enhancing ship engine performance based on the dynamics of heat release in the cylinder via the analyzing of indicating pressure charts

Studies have proven that the indicatingpressure chart of marine engine cylinder can providemany information not only about pressure, but also about a large number of parameters that are useful in enhancing engine performance. Therefore, in this research paper, we attempt to study the indicators that complete the physical image of the work cycle. This attempt uses an elaborate and comprehensive mathematical model for obtaining and using these parameters in order to form a clear image of the work cycle based on the dynamics of heat release in the cylinder, for the purposes of enhancing performance and achieving a more efficient, more economical mechanical operation. As a result we will reach a number of conclusions and recommendations which,upon being approved and used, can help to achieve with great mathematical accuracy a more optimized characteristic of the work cycle.

Studying of Possibilities for Performing a Diagnostics’ Model (Instruction phase) of Marine Engines’ Vibrations Onboard Ships

In this study, we have developed a mathematical model, which formed the basis for the development of a digital diagnostic model, for the question of the relation between the engine torque (and therefore power), and the clearances in the basic and secondary bearings of the crankshaft, to diagnose clearance values in these bearings, /which will inevitably affect on the torque and the vibrations of the engine/, where multiple and various grand-scale case experiments were carried out through simulation and arithmetic experimentation on a diagnostic model, which constituted the first and main phase (the instruction phase) of the full diagnosis. And at the end we discussed the results and put some conclusions and recommendations to complete the work in the future.