Abstract The paper investigates the problem of fire safety in habitable space structures. The flame propagation over thermally destructing material is studied theoretically within the framework of the assumptions of the boundary layer theory and the presence of a diffusion flame. The solution is developed based on the concept of thermally thin fuel layer. Flame propagation velocity over structured material, on which different widths ribs are attached, in an opposed flow is determined analytically. PMMA sample of 10 mm thickness, on which ribs of widths 1–10 mm are attached in the direction of flow, is considered as an example. The analytical solution is compared with experimental data.
Highlights Flame propagation velocity over structured material in an opposed flow is determined analytically. The flame propagation velocity decreases with an increase in the width of the rib. Slowing down the blower speed can help reduce the speed of flame propagation and the intensity of combustion. The ribs create more favorable conditions for flame propagation.
Analytical approach to flame propagation over thermally destructing structured material problem
Acta Astronautica ; 213 ; 438-445
2023-09-16
8 pages
Article (Journal)
Electronic Resource
English
Structured material , Surface , Burning , Diffusion , Flame , Spread , Weightlessness
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