On the numerical approach to the prediction of flame spread over non-planar surface of solid combustibles

AbstractThe flame spread over a non-planar surface of solid fuel has been studied numerically by the coupled model of heat transfer using the proposed approach for the evaluation of burning surface regression. The boundary conditions for the surface regression rate are formulated by the combination of flame spread modes over the vertical and horizontal surfaces resulted from the staircase shape of the burning surface. Numerical results showed a good agreement with the experiment on surface regression profile and mass loss of PMMA solid fuel.Keywords: flame spreadpolymer burningnon-planar surfacenumerical simulationcoupled heat transfer Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis work was supported by the Russian Foundation for Basic Research (Project No. 20-08-00481).