Passive Control on Supersonic Annular Cavity Flow


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The mode of supersonic flow around the cavity depends on the parameters of the incoming flow and the geometry of the cavity. In a certain range of ratios between the length and depth of the cavity, both open and closed flow modes in the cavity can be established. An important practical task is to find ways to control the flow regimes in the cavity, in particular, ways to expand the area of favorable open flow regimes. This paper presents the results of an experimental study of supersonic flow around an annular cavity formed by a coaxial conical tip and a cylindrical body connected by a cylindrical rod. A perforated interceptor is used to control the flow mode in the cavity at different angles of the tip cone. With a continuous change in the length of the cavity in the flow, the boundaries of the regions of unambiguous and ambiguous flow regimes in the cavity are determined. The data obtained indicate the possibility of significantly expanding the area of open flow modes in the cavity.

annular cavity, permeable interceptor, supersonic flow, flow separation, hysteresis

DOI: http://doi.org/10.33257/PhChGD.25.3.1027


Volume 25, issue 3, 2024 year


Пассивное управление потоком в сверхзвуковой кольцевой каверне

Режим сверхзвукового обтекания каверны зависит от параметров набегающего потока и геометрии каверны. В определенном интервале соотношений между длиной и глубиной каверны может устанавливаться как открытый, так и замкнутый режим течения в каверне. Важной практической задачей является поиск способов управления режимами течения в каверне, в частности, способов расширения области благоприятных открытых режимов течения. В настоящей работе представлены результаты экспериментального исследования сверхзвукового обтекания кольцевой каверны, образованной соосными коническим наконечником и цилиндрическим телом, соединенных цилиндрическим стержнем. Для управления режимом течения в каверне при разных углах конуса наконечника использован перфорированный интерцептор. При непрерывном изменении протяженности каверны в потоке определены границы областей однозначных и неоднозначных режимов течения в каверне. Полученные данные указывают на возможность значительно расширить область открытых режимов течения в каверне.

кольцевая каверна, проницаемый интерцептор, сверхзвуковой поток, отрыв потока, гистерезис

DOI: http://doi.org/10.33257/PhChGD.25.3.1027


Volume 25, issue 3, 2024 year



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