Abstract
As climate change and air pollution problems become more serious around the world, regulations to reduce greenhouse gas emissions are being tightened. The International Maritime Organization (IMO) has adopted measures to limit sulfur oxides and nitrogen oxides generated by ships. Due to the continuous use of fossil fuels, carbon dioxide emissions are increasing rapidly, which is acting as a major cause of global warming and climate change. Currently, the carbon neutrality policy to reduce greenhouse gases emitted by ships is expanding, and the use of alternative energy from marine fuels is increasing worldwide. The shipbuilding industry is actively introducing eco-friendly ships that use liquefied natural gas (LNG) fuels, and the importance of equipment such as the Fuel Gas Supply System (FGSS), which can supply eco-friendly energy, is growing. In this study, we designed a Gas Valve Unit (GVU), one of the FGSS components, and analyzed the internal flow of the GVU by performing computational fluid dynamics (CFD) simulations.