When the traditional CFD method is used to solve the Navier⁃Stokes equation of incompressible flow, the pressure equation has an elliptical shape and cannot be solved, and the convergence is poor. Therefore, the traditional CFD method has certain limitations. In order to study the computational efficiency and accuracy of the lattice Boltzmann method compared with the traditional CFD method, taking the thermal diffusion problem of plates with constant temperature boundary as an example, the temperature field between the plates is solved by the finite element volume method, the finite difference method and the lattice Boltzmann method. By comparing the solution results and the number of normalized iteration steps, the feasibility, accuracy and efficiency of the lattice Boltzmann method are clarified. The results show that under the same physical model, the lattice Boltzmann method and the finite difference method are slightly better than the finite element volume method. The lattice Boltzmann method has the fastest solution speed and the least iteration steps, followed by the finite difference method, and the finite element volume method has slowest solution speed.

The oil depot stores a large number of flammable and explosive materials. The operation process of the equipment is relatively complex and prone to accidents. Therefore, employees can only get on the job after training. The traditional training system is biased theory, and the training effect is poor. Taking Unity3D as the development platform, this paper develops an interactive virtual oil depot training system. The system adopts C# as the development language of interactive script and SQL Server for data management. It implements the functions of equipment attribute query, equipment interaction operation, and important process flow simulation in the form of first person view roaming. The system has a very real three⁃dimensional effect and interaction function, and strengthens the training effect of the oil depot staff.