Numerical Simulation Analysis of Fire Prevention in Electronic Components

According to the requirements of the fire prevention clause of CCAR33.17, the components, pipelines and cables in the designated fire area of electronic and electrical components should have the functions of fire prevention and fire resistance. This paper analyses different fire prevention conditions of an electrical electronic controller (EEC). Based on Pyrosim pre-processing tool and FDS solver, the simulation of standard flame burner is carried out. Combined with the commercial software ANSYS Fluent, the fluid-solid-thermal coupling simulation of EEC was carried out, the temperature and flow velocity field impacted by flame are solved and the weakest surface and the most severe working condition of the component were obtained, which provided reference for the follow-up fire prevention test of electronic components.