Investigations of the influence of slots spacing and depth on second mode disturbances in hypersonic boundary layer

S. V. Lukashevich, S. O. Morozov, A. N. Shiplyuk

Результат исследования: Публикации в книгах, отчётах, сборниках, трудах конференцийстатья в сборнике материалов конференциинаучнаярецензирование

Аннотация

Experimental investigations of the influence of coating consist of streamwise slots with different spacing and depth on second mode disturbances in hypersonic boundary layer of the sharp cone at Mach number M8 = 5.8 are conducted. The experiments show that the second mode disturbances are dumped on the surfaces with slots. It is found out that the maximum amplitude of the second mode versus depth has the nonmonotonic dependence. Minimum of the second mode disturbances amplitude are found for depth h = 0.6 mm for the coatings with slots width w = 0.2 mm and spacing b = 0.4 and 0.8 mm. The coatings consists slots with spacing b = 0.4 mm suppress disturbances better than coatings with b = 1.8 mm. Maximum of the disturbances growth rate on the surface with slots are shifted to the lower frequency. It is shown that surfaces consisting of streamwise slots effectively stabilizes the second mode disturbances, which is the most unstable in the hypersonic boundary layer, and destabilizes perturbations with lower frequencies related to the first mode disturbances.

Язык оригиналаанглийский
Название основной публикации19th International Conference on the Methods of Aerophysical Research, ICMAR 2018
Редакторы Fomin
ИздательAmerican Institute of Physics Inc.
Число страниц4
Том2027
ISBN (электронное издание)9780735417472
DOI
СостояниеОпубликовано - 2 ноя 2018
Событие19th International Conference on the Methods of Aerophysical Research, ICMAR 2018 - Akademgorodok, Novosibirsk, Российская Федерация
Продолжительность: 13 авг 201819 авг 2018

Серия публикаций

НазваниеAIP Conference Proceedings
ИздательAMER INST PHYSICS
Том2027
ISSN (печатное издание)0094-243X

Конференция

Конференция19th International Conference on the Methods of Aerophysical Research, ICMAR 2018
СтранаРоссийская Федерация
ГородAkademgorodok, Novosibirsk
Период13.08.201819.08.2018

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  • Цитировать

    Lukashevich, S. V., Morozov, S. O., & Shiplyuk, A. N. (2018). Investigations of the influence of slots spacing and depth on second mode disturbances in hypersonic boundary layer. В Fomin (Ред.), 19th International Conference on the Methods of Aerophysical Research, ICMAR 2018 (Том 2027). [040066] (AIP Conference Proceedings; Том 2027). American Institute of Physics Inc.. https://doi.org/10.1063/1.5065340