危化品爆炸大规模高精度仿真软件研发与应用

In order to accurately simulate the temporal and spatial evolution of explosion propagation of multi-component and multiphase hazardous chemicals in large-scale chemical parks, urban buildings (structures), refueling/ gas stations and other scenarios, based on the multi-component reactive Navier-Stokes governing equation, high order accurate positive-preserving weighted essential non-oscillatory finite difference scheme and, Compact-WENO hybrid finite difference scheme and other advanced numerical schemes were developed. Combining with efficient acceleration algorithms such as adaptive mesh refinement method, adaptive mesh enlargement method and MPI parallel computing method, a high order accurate finite difference solver for hazardous chemical explosion was independently developed by Fortran language. Using C++ language based on object-oriented programming method, the pre-processing and post-processing modules for finite difference scheme were developed. Integrating high order accurate solver, pre-processing and post-processing modules, large-scale high order accurate simulation software for hazardous chemical explosion was carried out. The results show that the software can simulate the chemical reaction model containing any kind of components, and has a variety of turbulence and turbulent combustion models. It can realize the numerical simulation of the whole process of hazardous chemical leakage-diffusion-explosion.