Numerical research of heat and mass transfer at interaction of several hot particles with typical polymeric material

20th International Conference for Students and Young Scientists: Modern Techniques and Technologies

工业技术;材料科学

Glushkov, D.^1 ; Vershinina, K.^1

Tomsk Polytechnic University, Tomsk, Russia^1

关键词: Characteristic size;    Condensed substances;    Heat and mass transfer;    Hot particles;    Ignition delay time;    Numerical investigations;    Thermal conduction;    Thermal convections;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/66/1/012039/pdf
DOI  :  10.1088/1757-899X/66/1/012039

来源: IOP

【 摘 要 】

The results of numerical investigation of heat and mass transfer at polymeric material ignition by several small-size hot particles are presented. The developed mathematical model considers the thermal conduction in polymeric material and hot particles, thermal decomposition of condensed substance, diffusion and thermal convection of combustible gases in air. It has been determined that the joint effect of several local energy sources on the ignition delay time is absent when the distance between hot particles exceeds their characteristic size.