title: Ð¡Ð¾Ð¿ÑÑÐ¶ÐµÐ½Ð½ÑÐ¹ ÑÐµÐ¿Ð»Ð¾Ð¾Ð±Ð¼ÐµÐ½ Ð½Ð° Ð¿Ð¾Ð²ÐµÑÑ Ð½Ð¾ÑÑÐ¸ ÑÐ²ÑÑÐ´Ð¾Ð³Ð¾ Ð³Ð¾ÑÑÑÐµÐ³Ð¾ Ð¼Ð°ÑÐµÑÐ¸Ð°Ð»Ð° Ð¿ÑÐ¸ ÑÑÑÐ°Ð½Ð¾Ð²Ð¸Ð²ÑÐµÐ¼ÑÑ Ð³Ð¾ÑÐµÐ½Ð¸Ð¸ Ð¸ ÑÐ°ÑÐ¿ÑÐ¾ÑÑÑÐ°Ð½ÐµÐ½Ð¸Ð¸ Ð¿Ð»Ð°Ð¼ÐµÐ½Ð¸
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¼Ð°Ð³Ð¸ÑÑÑÐ°
titleType: Subtitle
title: Conjugate heat exchange on the surface of a solid combustible material during steady combustion and flame propagation
Creators: name: ÐÐ¼ÐµÐ»ÑÑÐµÐ½ÐºÐ¾, ÐÐ»ÑÐ³Ð°
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2021
Subjects: ÐÐ°ÑÐµÑÐ¸Ð°Ð»Ñ
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polymethyl methacrylate

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description: The theme of the final qualifying work: "Conjugate heat exchange on the surface of a solid combustible material during steady combustion and flame propagation". This work is devoted to the development of a technique for the numerical simulation of the combustion of solid combustible materials and flame propagation, taking into account the thermal feedback between the gas-phase flame and the thermal decomposition of the combustible material. The computational model and the FDS code are used in the work. The tasks solved in this work: 1. Analytical review of published works on the topic of work. 2. Conjugate heat exchange on a horizontal surface of a solid combustible material during steady combustion. Analysis of the sensitivity of the calculation results to the grid resolution. Application of a subgrid model to calculate convective heat flux on a surface engulfed in flames. Comparison with experimental data for the burnup rate and heat flux on the surface. 3. Conjugate heat transfer on a horizontal surface of a solid combustible material when the flame spreads over the surface. Development of calculation methods, comparison with experimental data. 4. Development of recommendations for performing computations with insufficient grid resolution. The work consists of 6 chapters. The introduction discusses strategies for the numerical simulation of combustion in a fire and formulates the goals and objectives of this work. The first chapter contains theoretical materials and a review of available publications on heat transfer, steady-state combustion and flame propagation, as well as a review on the numerical modeling of pyrolysis of combustible materials, turbulent combustion of their gasification products, estimates of kinetic parameters, and modeling of convective heat flux. The second chapter describes the mathematical models used in FDS. The third chapter contains descriptions of experiments used to test the results of numerical simulations obtained in this work. The fourth chapter contains a description of the calculation results, their comparative analysis. In the final chapter, the main results of the work are formulated. The work is carried out by the author as part of the scientific group "Combustibility of Materials and Fire Modeling" of the Department of "Hydroaerodynamics, Combustion and Heat Transfer" of the Institute of Applied Mathematics and Mechanics of SPbPU. The calculations are performed using multiprocessor computing clusters SKTs (supercomputer center) "Polytechnic" of SPbPU.