The Effect of Wind Speed on the Diffusion of SO2 in Ship Exhaust

In recent years, ship transportation has made significant contributions to the global economic development, but it has caused serious air pollution. Against the backdrop of increasingly strict control standards for the sulfur content of marine fuel in emission control zones in China, various research departments have also conducted research on the diffusion distribution of ship exhaust gas. This article aims to study the effect of environmental wind speed on the diffusion process of SO2 in ship exhaust. FLUENT software was used to simulate the process of ship exhaust emissions, analyze the spatiotemporal distribution characteristics of ship exhaust diffusion, and conduct numerical simulation research on the diffusion process of SO2 in ship exhaust under different wind speeds by numerically solving the control fluid flow, energy, composition, and turbulence equations. The research results indicate that the SO2 emissions in ship exhaust exhibit a normal spatial symmetric distribution and diffusion characteristic along the axis of the following wind direction. The magnitude of offshore wind speed is an important factor affecting the diffusion concentration of ship exhaust. When other conditions remain unchanged, the lower the environmental wind speed, the higher the smoke rise, and the slower the diffusion speed of smoke concentration.