|
ИСТИНА |
Войти в систему Регистрация |
ФНКЦ РР |
||
Effect of singlet oxygen O2(a1Dg) molecules produced in gas discharge plasma on the ignition of hydrogen-oxygen mixturesстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
- Автор: Popov N.A.
- Журнал: Plasma Sources Science and Technology
- Том: 20
- Год издания: 2011
- Издательство: IOP Publishing
- Местоположение издательства: [Bristol, UK], England
- Первая страница: 045002
- Последняя страница: 11
- DOI: 10.1088/0963-0252/20/4/045002
- Аннотация: A kinetic model describing the impact of the singlet delta oxygen O2(a1Dg) produced in gas discharge plasma on the evolution of hydrogen-oxygen mixture composition was worked out. In the framework of this model there was shown a possibility of describing all the main experimental data on the dynamics of O2(a1Dg) quenching in H2 : O2 gas mixtures in the temperature range of T0 = 300 - 1050 K. Most of the interactions between singlet oxygen molecules and atomic hydrogen O2(a1Dg) + H lead to quenching of O2(a1Dg). Efficiency of this interaction channel is more than 80% and fraction of the reaction H + O2(a1Dg) = OH + O(3P) was only in 10 - 20%. The impact of the singlet oxygen O2(a1Dg) admixture on the ignition of H2 : O2 mixtures was investigated. The dominant process determining the degree of O2(a1Dg) impact is its deactivation by HO2 molecules. As a result, in H2 : O2 mixtures of high pressure, where the number density of produced HO2 molecules can be high enough, the impact of singlet oxygen on the ignition delay time of these mixtures turns out to be relatively weak. This effect becomes even less noticeable if admixtures of atomic oxygen are presented in the mixture. Oxygen atoms produced by the discharge are more efficient for the ignition of hydrogen-oxygen and hydrogen-air mixtures than O2(a1Dg) molecules. Thus, to reduce the ignition delay time and decrease the temperature threshold of combustive mixtures, it should be recommended to use gas discharge systems providing most of all the efficient production of atomic particles.
- Добавил в систему: Попов Николай Александрович