The Conditions and Characteristics of Wood Particles Ignition in the Stream of the High Temperature Gases

Кузнецов, Г. В.; Gutareva, N.Y.; Bugaeva, Ksenia; Taburchinov, Roman I.

doi:10.1080/00102202.2017.1404997

Cited by 21 publications

(4 citation statements)

References 47 publications

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“…Следует отметить, что для литого алюминия износостойкость и механические свойства значительно улучшаются также при его армировании наноразмерными частицами. Показано [11], что введение наночастиц Al2O3 с массовой долей от 1 до 5 % в алюминиевую матрицу значительно увеличивает предел прочности при растяжении, предел текучести и твердость материала пропорционально количеству содержания наполнителя.…”

Section: рисунок 1 изменение твердости (1 2) и коррозионной стойкости...unclassified

“…Пусть процесс сушки описывается системой нестационарных дифференциальных уравнений в частных производных, а именно энергетическое уравнение комплекса тепло-и масссообменных процессов, происходящих совместно, и формирование гетерогенной структуры, которая включает влажную и сухую части [11]: Уравнение энергии для газового слоя древесины [12]]:…”

Section: рисунок 1 структурная схема области моделирования: 1 древеси...unclassified

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2022

TechConf

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АННОТАЦИЯПостроение математической модели работы ракетного двигателя твердого топлива, решение системы дифференциальных уравнений методом Эйлера, расчет внутрибаллистических характеристик двигателя. Моделирование профилированного сопла исследуемого двигателя в заданных геометрических ограничениях.

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Section: рисунок 1 изменение твердости (1 2) и коррозионной стойкости...unclassified

Section: рисунок 1 структурная схема области моделирования: 1 древеси...unclassified

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2022

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“…As the results of the research [36] have shown, the humidity of the fuel also has a significant impact on the characteristics and conditions of ignition. So, at the external temperature T g ¼ 1073 K, the ignition delay time of a particle (with a characteristic size d ¼ 3 mm) of moist wood decreases from 12 s to 0.5 s with the decrease in humidity (4) from 60% to 0% (in other words, in 24 times).…”

Section: Justification Of the Prospects Of Research Themementioning

confidence: 99%

In vitro Effects of a Novel Silver-based Complex on Influenza Virus

Silnikov¹,

Plotnikov

2018

Journal of Pharmacology and Pharmacotherapeutics

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The results of the experimental and theoretical studies of the processes of the single particles ignition of the wood biomass of various forms (a cube, a cylinder and a sphere) have been presented. According to the results of the experimental studies, it has been established that the particles form can have a fairly significant effect on the characteristics and conditions of ignition. It has been shown that the wood particles in the form of a sphere are ignited much faster than cylindrical and cubic ones (ignition delay times are less by 56%). Such a tendency is maintained for particles sizes from 1 $ 10 À3 m to 3 $ 10 À3 m. According to the results of the experiments, the mathematical model for ignition of a particle of wet wood biomass has been formulated, taking into account the joint occurrence of the main processes of the thermal preparation (radiation-convective particle heating, evaporation of water, thermal decomposition of the organic part of the fuel, output, ignition and combustion of gaseous pyrolysis products, ignition of the char residue). The formulated system of the nonlinear differential equations in the partial derivatives with the corresponding boundary conditions describes the ignition process in a two-dimensional setting, taking into account the substantial nonuniformity of the temperature field of a wood particle in the induction period. We have taken into account that the evaporation process takes place in the front. Up to the present time, the mathematical models of such a degree of detailing of the physical processes occurring together when igniting wet wood have not been formulated. A comparative analysis of the ignition delay times (t ign) obtained theoretically and experimentally has showed their satisfactory correspondence. As a result of the numerical simulation, the temperature fields in the system "a fuel particle d hightemperature medium" have been obtained, illustrating the high gradients of the temperatures at the moment of ignition. It has been established that it is possible to ignite the water-saturated wood particles before they dry completely. It has been established that the ignition mode of wood particles is possible before they dry completely.

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“…-the energy equation for woody biomass, taking into account the complex of heat and mass transfer processes occurring together, and the formation of a substantially heterogeneous structure, including the wet and dry parts [11]:…”

Section: Figmentioning

confidence: 99%

Mathematical modeling of processes of heat and mass transfer during drying of wood biomass

Иванова

Bulba

2018

MATEC Web Conf.

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For the first time, a mathematical model for the drying of woody biomass during conductive heating with localization of the evaporation front has been formulated. The processes of moisture removal during the filtration of steam through the porous structure of the material at an ambient temperature of Te = 373 K were considered. Humidity was varied (in the range from 6% to 40%) and dimensions of wood blanks (Rd = 0.0035 - 0.035 m). Based on the results of numerical simulation, the conditions and characteristics (evaporation rate Wisp, drying time τ dry) of the process of moisture removal from wood biomass are determined. The mathematical model allows to calculate the drying time, as well as the mass evaporation rate for different sizes of wood sample, humidity and temperature conditions.

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The Conditions and Characteristics of Wood Particles Ignition in the Stream of the High Temperature Gases

Cited by 21 publications

References 47 publications

Untitled

Untitled

In vitro Effects of a Novel Silver-based Complex on Influenza Virus

Mathematical modeling of processes of heat and mass transfer during drying of wood biomass

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