Numerical Analysis of Vent Mast Leakage on Dual-fuel Powered Ship Based on CFD Simulation
Based on the design of a dual-fuel powered ship,the method of analyzing the LNG leakage from the vent mast by CFD simulation was proposed.The simulation results showed as follows.The diffusion of LNG leakage was related to the design height of the vent mast.When the design height of the vent mast was 6m,the leakage gas obviously sank into the deck and the working area around the LNG tanks.When the design height of the vent mast was high enough(15m in this article),the leakage gas expanded and diffused vertically without sinking phenomenon.Moreover,the leakage gas around the deck and the storage tank all diffused and disappeared within 60 s,which had no affect on the safety operation of crew.
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