Gasdynamic structure of underexpanded planar microjets ejected into still air

V. M. Aniskin, T. A. Korotaeva, N. A. Maslov, E. A. Obodovskaya, A. O. Turchinovich, E. O. Tsibulskaya, I. S. Tsyryulnikov

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

Аннотация

Recently, interest in micro-jet research has increased that is related to the potential use of micro-jets in various applications of aerospace and chemical industries. Non-axisymmetric nozzles, in particular rectangular ones, are often used due to design considerations. The purpose of this work is numerical and experimental study of the ejection of underexpanded micro jets from a slotted nozzle into still air in wide range of jet pressure ratio, height of the rectangular nozzle, and height-to-width ratio. The jets have sonic velocity at the nozzle exit. The paper presents the results of experiments on visualization of the gas micro-jets outflow using a shadowgraph method, as well as longitudinal and transverse pressure distribution measured by Pitot tubes. Numerical simulation of the ejection of underexpanded microjets from the slotted nozzle into still air has been carried out in 2D statement. Calculations have been performed at the same conditions in the still area as experimental ones. Stationary Reynolds-averaged Navier-Stokes equations have been solved for the turbulent flow regime with the turbulence model k-ω SST. The measurements and visualization of the flow allowed us to obtain parameters: the length both of a non-dimensional average shock cell and the first one.

Язык оригиналаанглийский
Название основной публикации19th International Conference on the Methods of Aerophysical Research, ICMAR 2018
Редакторы Fomin
ИздательAmerican Institute of Physics Inc.
Число страниц7
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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