Mathematical model for determining the configuration factor when calculating fire risks between buildings with double roofs made of combustible materials
Keywords:fire-break, flame’s geometrical parameters, configuration factor, combustible roofing materi-als
Purpose. To develop a mathematical model for estimating the configuration factor, which takes into account the triangular shape of the radiating surface and the mutual positional relationship relative to the receiving surface.
Methods. The development of equations for determining the configuration factor was based on the results of the analysis of experimental studies and existing approaches to determining the magnitude of fire gaps between buildings and structures, and Lambert's law for determining the amount of energy transmitted from the radiation to the receiving surface.
Findings. For parallel radiating and receiving surfaces, located arbitrarily relative to each other, the analytical expression is obtained that allows determining the configuration factor of an element of receiving surface by emitting surface which have the shape of an arbitrary convex polygon.
Application field of research. Determination of the fire breaks between buildings, taking into account the individual characteristics of the objects calculated – gabled roof made of combustible materials.
Khrustalev B.M. Teplo- i massoobmen [Heat and mass transfer]: tutorial in 2 parts. Minsk: BNTU, 2007. Part 1. 606 p. (rus)
Modest M.F. Radiative Heat Transfer. Oxford: Elsevier, 2013. 897 p.
Pastukhov S.M., Zhamoydik S.M., Teteryukov A.V. Analiz podkhodov po otsenke minimal'no dopustimykh rasstoyaniy mezhdu zdaniyami pri vozdeystvii pozhara [Analysis approaches for assessment minimum distance between the buildings at the case of fire exposure]. Vestnik Komandno-inzhenernogo instituta MChS Respubliki Belarus', 2014. No. 2 (20). Pp. 23–31. (rus)
Shatskov A.O., Kononykhin G.A., Monakh S.I. Raschet uglovykh koeffitsientov izlucheniya pri reshenii zadach luchistogo teploobmena v pomeshcheniyakh s infrakrasnym otopleniem [Calculation of the configuration factor when solving problems of radiant heat transfer in rooms with infrared heating]. Journal of Proceeding of the Donbas National Academy of Civil Engineering and Architecture, 2014. Vol. 107, No. 3. Pp. 41–46. (rus)
Hankinson G.A Method for calculating the configuration factor between a flame and a receiving target for a wide range of flame geometries relevant to large scale fires. Fire Safety Science, 1986. Vol. 1. Pp. 197–206.
Drysdale D. An Introduction to Fire Dynamics. Chichester: University of Edinburgh, 1999. 470 p.
Mikheev M.A. Osnovy teploperedachi [Heat transfer basics]. Moscow: Energiya, 1977. 344 p. (rus)
Fokin K.F. Stroitel'naya teplotekhnika ograzhdayushchikh chastey zdaniy [Construction heat engineering of envelope building]. Moscow: Stroyizdat, 1973. 287 p. (rus)
Roytman M.Y. Protivopozharnoe normirovanie v stroitel'stve [Fire safety regulation in construction]. Moscow: Stroyizdat, 1985. 590 p. (rus)
Karlsson B., Quintiere J. G. Enclosure Fire Dynamics. Boca Raton: CRC Press, 2000. 316 p.
Carlsson, E. External fire spread to adjoining buildings – A review of fire safety design guidance and related research. Lund: Department of Fire Safety Engineering Lund University, 1999. 125 p.
Grushevskiy B.V., Yakovlev A.I., Krivosheev I.N., Shurin E.T., Klimushin N.G. Pozharnaya profilaktika v stroitel'stve [Fire prevention in construction]: textbook. Ed. by V.F. Kudalenkin. Moscow, 1985. 454 p. (rus)
Pastukhov S.M., Teteryukov A.V. Metodika provedeniya eksperimental'nykh issledovaniy po opredeleniyu geometricheskikh parametrov plameni pri gorenii krovel'nykh materialov [The method of experimental researches to determine the geometric parameters of the flame during combustion of roofing materials]. Journal of Civil Protection, 2018. Vol. 2, No. 2. Pp. 176–185. (rus). DOI: https://www.doi.org/10.33408/2519-237X.2018.2-2.176.
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