Numerical simulation of gel fuel gas-phase ignition by a local source of limited heat content; Acta Astronautica; Vol. 163

Numerical simulation of gel fuel gas-phase ignition by a local source of limited heat content

Bibliografische gegevens
Parent link:Acta Astronautica
Vol. 163.— 2019.— [P. 44-53]
Coauteurs: Национальный исследовательский Томский политехнический университет Инженерная школа энергетики Научно-образовательный центр И. Н. Бутакова (НОЦ И. Н. Бутакова), Национальный исследовательский Томский политехнический университет Исследовательская школа физики высокоэнергетических процессов
Andere auteurs: Glushkov D. O. Dmitry Olegovich, Kuznetsov G. V. Geny Vladimirovich, Strizhak P. A. Pavel Alexandrovich, Taburchinov R. I. Roman Iljich
Samenvatting:Title screen
A mathematical model has been developed to predict the characteristics of interdependent physical and chemical processes taking place in a gel fuel ignition by a hot cylinder-shaped particle located on its surface. The density values have been established for the heat flux (60–950?kW/m2) from the local heating source to the fuel, that are required for its ignition in a wide range of various initial temperatures (840–1500?K), dimensions (radius 2.5–10?mm, height 5–20?mm), and particle materials (steel, copper, aluminum, ceramics, and carbon). Changes in these parameters were found to significantly affect the main characteristic of the process – ignition delay times – under the near-threshold ignition conditions. During local conductive heating, the delay times of the gas-phase ignition of the fuel vary between 0.02 and 0.8?s. At the initial fuel temperature of 80?K, the duration of the induction period rises by 40% as compared to the fuel ignition delay time at the initial temperature of 275?K in the conditions of ignition by a particle with a temperature of 1000?K. It has been established that regardless of the local heating source parameters and conditions of the process, the ignition of the fuel occurs near the base of the hot particle in the immediate vicinity of the gel fuel surface.
Режим доступа: по договору с организацией-держателем ресурса
Taal:Engels
Gepubliceerd in: 2019
Onderwerpen:
электронный ресурс
труды учёных ТПУ
gel fuel
low temperature
hot particle
phase transitions
ignition
mathematical model
гелевое топливо
низкие температуры
зажигание
математическая модель
Online toegang:https://doi.org/10.1016/j.actaastro.2018.11.050
Formaat: Elektronisch Hoofdstuk
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=660681

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