The growth of LNG trades has grown dramatically around the world year by year. It has become one of the primary energy sources in imports of China, followed oil. Then, it comes to an important problem that how to use it safely. To resolve the potential releases of LNG and other problems involved in safety during storage and transport, computer models based CFD, such as MTB, DEGADIS, FEM3A are applied. By using small scale physical experiments for verification, economical and perfect results can be achieved, and the problems is avoided that traditional physical modeling on spot is hard to control and very expensive. Based the summary about the difficulties that the physical experiments contain, it is proposed that solving method is using ULS wind tunnel in the research of the new model FEM3A for more complex obstacle arrays and non-uniform terrain. A higher order turbulence closure model is given.