Abstract
Environmental issues and rising fuel prices necessitate better energy efficiency in all sectors. Shipping industry is a stakeholder in environmental issues. Shipping industry is responsible for approximately 3% of global CO2 emissions, 14-15% of global NOX emissions, and 16% of global SOX emissions. Ship trim optimization has gained enormous momentum in recent years being an effective operational measure for better energy efficiency to reduce emissions. Ship trim optimization analysis has traditionally been done through tow-tank testing for a specific hullform. Computational techniques are increasingly popular in ship hydrodynamics applications. The purpose of this study is to present MOERI container ship (KCS) hull trim optimization by employing computational methods. KCS hull total resistances and trim and sinkage computed values, in even keel condition, are compared with experimental values and found in reasonable agreement. The agreement validates that mesh, boundary conditions, and solution techniques are correct. The same mesh, boundary conditions, and solution techniques are used to obtain resistance values in different trim conditions at Fn = 0.2274. Based on attained results, optimum trim is suggested. This research serves as foundation for employing computational techniques for ship trim optimization.
Highlights
Global temperature increase by 2∘C above preindustrial level is expected to cause severe devastation on global scale
Shipping industry is responsible for approximately 3% of global CO2 emissions, 14-15% of global NOX emissions, and 16% of global SOX emissions [3, 4]
Computational techniques are increasingly popular for design and optimization applications in all engineering disciplines
Summary
Global temperature increase by 2∘C above preindustrial level is expected to cause severe devastation on global scale. The only way to overcome this issue is to reduce global greenhouse gas (GHG) emissions. Intergovernmental Panel on Climate Change [1] concluded that global greenhouse gas (GHG) emissions need to be 50–85% below current levels in 2050 to reach this target. Shipping industry is one of the stakeholders in environmental issues. Intercontinental trade, bulk transport of raw materials, and import/export of affordable food and goods are carried out through ships. It is estimated that almost 90% of the world trade goods are carried by ships. This trade has little or no alternative means of transportation other than ships at this point and foreseeable future.
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