Structural features of the detonation flow
The subject of this research is the processes that occur during the formation and propagation of a detonation wave in a flat channel. The goal of this work is to study the features of the complex multiform structure of the detonation wave and its influence on the integral parameters of the detonatio...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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National Aerospace University «Kharkiv Aviation Institute»
2023-06-01
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| Series: | Авіаційно-космічна техніка та технологія |
| Subjects: | |
| Online Access: | http://nti.khai.edu/ojs/index.php/aktt/article/view/1992 |
| _version_ | 1827911027827671040 |
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| author | Oleksandr Aksonov Oleksandr Zolotko |
| author_facet | Oleksandr Aksonov Oleksandr Zolotko |
| author_sort | Oleksandr Aksonov |
| collection | DOAJ |
| description | The subject of this research is the processes that occur during the formation and propagation of a detonation wave in a flat channel. The goal of this work is to study the features of the complex multiform structure of the detonation wave and its influence on the integral parameters of the detonation flow. The task of the research was to identify regularities during the formation process and propagation of the detonation wavefront, establish the nature of the influence of the detonation front structure on the processes that occur in the zone of stable flow parameters, and analyze the gas-dynamic parameters of the flow at the final stage of the process - at the stage of propagation of rarefaction waves. The main research method is mathematical simulation using CFD technologies (ANSYS Fluent package). The main results of the study: it was established that the values of gas-dynamic parameters at the triple points of shock waves are significantly greater than the corresponding values at the Neumann peak, and in the areas between the triple points are significantly smaller; the values of the parameters averaged over the cross-section of the detonation wave front almost do not differ from the values of the parameters at the Neumann peak; the propagation velocity of the detonation wave averaged over the cross-section of the flow also corresponds to the calculated velocity according to the Chapman-Jouguet model; outside the zone of chemical reaction, the formation of triple configurations is impossible, therefore the speed of the detonation wave front will be lower than the values of Chapman-Jouguet, which will affect the further processes of propagation of the detonation; the processes of formation and propagation of the detonation wave front in a certain way influence the distribution of steady flow parameters, while the wave processes spread to the Taylor zone, which leads to significant turbulence of the wall layer; due to the turbulence of the wall layer, the intensity of convective heat fluxes into the channel wall increases. Conclusion: the obtained results are in good agreement with the results of known experimental studies and can be used in the calculation of the integral impulse characteristics of the detonation engine chamber and in the design of its cooling system. |
| first_indexed | 2024-03-13T01:58:29Z |
| format | Article |
| id | doaj.art-8fd66ee2828e43ddbc161ee0404bbed7 |
| institution | Directory Open Access Journal |
| issn | 1727-7337 2663-2217 |
| language | English |
| last_indexed | 2024-03-13T01:58:29Z |
| publishDate | 2023-06-01 |
| publisher | National Aerospace University «Kharkiv Aviation Institute» |
| record_format | Article |
| series | Авіаційно-космічна техніка та технологія |
| spelling | doaj.art-8fd66ee2828e43ddbc161ee0404bbed72023-07-02T10:06:54ZengNational Aerospace University «Kharkiv Aviation Institute»Авіаційно-космічна техніка та технологія1727-73372663-22172023-06-0103424910.32620/aktt.2023.3.051902Structural features of the detonation flowOleksandr Aksonov0Oleksandr Zolotko1Oles Honchar Dnipro National University, Dnipro; State Enterprise «Design office «Yuzhnoye»», DniproOles Honchar Dnipro National University, DniproThe subject of this research is the processes that occur during the formation and propagation of a detonation wave in a flat channel. The goal of this work is to study the features of the complex multiform structure of the detonation wave and its influence on the integral parameters of the detonation flow. The task of the research was to identify regularities during the formation process and propagation of the detonation wavefront, establish the nature of the influence of the detonation front structure on the processes that occur in the zone of stable flow parameters, and analyze the gas-dynamic parameters of the flow at the final stage of the process - at the stage of propagation of rarefaction waves. The main research method is mathematical simulation using CFD technologies (ANSYS Fluent package). The main results of the study: it was established that the values of gas-dynamic parameters at the triple points of shock waves are significantly greater than the corresponding values at the Neumann peak, and in the areas between the triple points are significantly smaller; the values of the parameters averaged over the cross-section of the detonation wave front almost do not differ from the values of the parameters at the Neumann peak; the propagation velocity of the detonation wave averaged over the cross-section of the flow also corresponds to the calculated velocity according to the Chapman-Jouguet model; outside the zone of chemical reaction, the formation of triple configurations is impossible, therefore the speed of the detonation wave front will be lower than the values of Chapman-Jouguet, which will affect the further processes of propagation of the detonation; the processes of formation and propagation of the detonation wave front in a certain way influence the distribution of steady flow parameters, while the wave processes spread to the Taylor zone, which leads to significant turbulence of the wall layer; due to the turbulence of the wall layer, the intensity of convective heat fluxes into the channel wall increases. Conclusion: the obtained results are in good agreement with the results of known experimental studies and can be used in the calculation of the integral impulse characteristics of the detonation engine chamber and in the design of its cooling system.http://nti.khai.edu/ojs/index.php/aktt/article/view/1992детонаціяматематичне моделюванняструктура фронту детонаційної хвилі |
| spellingShingle | Oleksandr Aksonov Oleksandr Zolotko Structural features of the detonation flow Авіаційно-космічна техніка та технологія детонація математичне моделювання структура фронту детонаційної хвилі |
| title | Structural features of the detonation flow |
| title_full | Structural features of the detonation flow |
| title_fullStr | Structural features of the detonation flow |
| title_full_unstemmed | Structural features of the detonation flow |
| title_short | Structural features of the detonation flow |
| title_sort | structural features of the detonation flow |
| topic | детонація математичне моделювання структура фронту детонаційної хвилі |
| url | http://nti.khai.edu/ojs/index.php/aktt/article/view/1992 |
| work_keys_str_mv | AT oleksandraksonov structuralfeaturesofthedetonationflow AT oleksandrzolotko structuralfeaturesofthedetonationflow |