|
ИСТИНА |
Войти в систему Регистрация |
ИПМех РАН |
||
Azimuthal Structure of Low-Frequency Noise of Installed Jetстатья
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: 11 ноября 2020 г.
- Авторы: Faranosov Georgy, Belyaev Ivan, Kopiev Victor, Bychkov Oleg
- Журнал: AIAA Journal
- Том: 57
- Номер: 5
- Год издания: 2019
- Издательство: American Institute of Aeronautics and Astronautics
- Местоположение издательства: United States
- Первая страница: 1885
- Последняя страница: 1898
- DOI: 10.2514/1.j057476
- Аннотация: An experimental study of the azimuthal modes of the sound field generated by a single-stream round jet installednear a flat plate is presented. The investigation is conducted at subsonic Mach numbers (up to 0.82) for theconfiguration in which the plate trailing edge is located in the linear hydrodynamic jet near field. It is shown that theazimuthal modes of the acoustic field contain additional information compared to the total signals and allow moreprecise characterization of the installation effect in the low-frequency domain where it is most pronounced. Thefactors influencing the accuracy of the azimuthal decomposition are considered. It is demonstrated that jet noiseremains practically unaffected by the plate and that installation noise is localized in the azimuthal modesantisymmetric with respect to the plate. A novel procedure of splitting total noise into jet noise and installation noisecomponents is proposed. It is shown that this procedure allows more precise determination of the installation noiseparameters, which are shown to correspond to the analytical model based on the scattering of the jet near-fieldpulsations by a half-plane. Correlation properties of the azimuthal modes in the installed and uninstalledconfigurations are also investigated and analyzed.
- Добавил в систему: Бычков Олег Павлович
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | AIAAJ_JFI-ADT_201910.25141.J057476.pdf | AIAAJ_JFI-ADT_201910.25141.J057476.pdf | 4,4 МБ | 8 ноября 2020 [BychkovOP] |