Fire Protection Performance of Nanocoating on a LPG Tank under Fire Based on the Wavelet Finite-Element Method

To study the fire protection effect of the nanocoating on the liquefied petroleum gas (LPG) tank under fire, the wavelet finiteelement method is applied in analyzing the thermal stress, temperature, and pressures distribution laws of uncoated, coated, and nanocoated LPG tanks. First, the relating research on nanocoating and the wavelet finite-element method is studied, respectively, and the feasibility of this research is analyzed. Second, the theoretical model of fire protection analysis of nanocoating is established, and the property of wavelet analysis, temperature field model, and turbulent flow model are constructed, respectively. Finally, the simulation is carried out, and the distribution laws of thermal stress, temperature, and pressure are obtained. Simulation results show that the nanocoated LPG has better heat insulation character, and it can be used as a passive fireproof system that can cooperate with rain fire extinguishing systems to reduce the explosion hazard of a LPG tank under fire. The wavelet finite-element method has higher calculating efficiency and precision.