Exhaust gas emissions have become a major concern in terms of environmental impact in the recent years. In addition to maintaining low emission requirements, the ship builders have to account for the long term and short term exposure limits of harmful gases on and around the ship. The exhaust gases that are expelled from the ship funnels could easily flow into deck and cabin areas through air intakes and vents. This affects the quality of air for the cabin crew, potentially creating an unsafe working environment. Ship yards have to ensure that the exposure limits of these harmful gases are within the health and safety standards. Traditionally, wind tunnel experiments are conducted to predict the smoke dispersion and measure the concentration of harmful gases. This paper describes the results obtained for exhaust gas dispersion analysis of an Aframax tanker. It shows a comparison of results obtained from both CFD and wind tunnel tests.
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