Analysis of Temperature and Gas Flow Distribution Inside Safety Helmet Based on Numerical Simulation

Sie sind hier: Homepage > Suche

Analysis of Temperature and Gas Flow Distribution Inside Safety Helmet Based on Numerical Simulation

Ma, Heng / Li, Rui / Qian, Ke / Gao, Yibo / Chen, Ling

Abstract Aiming at the problem that the low heat dissipation of the safety helmet has an impact on the workers which can easily lead to safety accidents under high temperature and high strength, this paper analyzed the temperature field and gas flow field inside the safety helmet by using Finite Element Analysis, modeled and meshed the real safety helmet, obtained the distribution nephogram of temperature and heat flux by steady state and transient thermal analysis, calculated the results of the hot gas flow inside safety helmet and the gas flow nephogram by turbulence model. The results show that the temperature inside the safety helmet decreases gradually from bottom to top, the heat transfer rate of the contact part with the head is faster, only a small amount of hot gas can be vented from the vent while most of the hot gas is still concentrated inside the safety helmet difficult to vent. Therefore, it is necessary to improve the design of safety helmet and the comfort of the operation to ensure the safety of the workers.