Experimental investigation of upward spread forced smoldering phenomenon

Autor: Vinayak Malhotra, Akshita Swaminathan
Rok vydání: 2021
Předmět:
Zdroj: Materials Today: Proceedings. 46:9882-9888
ISSN: 2214-7853
DOI: 10.1016/j.matpr.2020.12.1106
Popis: Systematic experimental study is carried out to fundamentally understand the governance of external energy source(s) on upward smoldering. Appreciable work had been done on downward spreading smoldering however, upward spread smoldering represents complexity of higher order and is more difficult to suppress. In most of the practical cases, the phenomenon is governed by external flow, thermal, acoustic source(s) and have been a source of enormous mutilation which imposes more scientific research activities in this domain to study this phenomenon. In the present work, upward smoldering phenomenon is investigated for singular and coupled effect(s) of external energy source(s) in the form of regression rate variation. Thorough experimentation was carried out with distinct linear configurations depending on varying forced flow effects on upward spread smoldering under cases of (i) in presence of external heat source (ii) in presence of external alternative energy sources (acoustic energy). Additionally, the role of ash removal was also observed and studied. The results highlight significant effects of different external energy source(s) which varies singularly and as coupled effect on upward smoldering. The complexity is clearly highlighted with continuously varying definitive effect of a particular external source under varying subjective conditions. The results provides better understanding of the coupled external energy source(s) effect and can be utilized effectively for testing, designing and validation of effective fire prevention in both cases of stationary and propagating fires.
Databáze: OpenAIRE
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