title: Ð£Ð¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ðµ Ð°Ð²ÑÐ¾ÐºÐ¾Ð»ÐµÐ±Ð°Ð½Ð¸ÑÐ¼Ð¸ ÑÑÑÐ±ÑÐ»ÐµÐ½ÑÐ½Ð¾Ð¹ ÑÑÑÑÐ¸, ÑÐ°ÑÐ¿ÑÐ¾ÑÑÑÐ°Ð½ÑÑÑÐµÐ¹ÑÑ Ð² ÑÐ·ÐºÐ¾Ð¹ Ð¿Ð¾Ð»Ð¾ÑÑÐ¸, Ð¿Ð¾ÑÑÐµÐ´ÑÑÐ²Ð¾Ð¼ ÑÑÑÑÐ¹Ð½Ð¾Ð¹ Ð¿Ð¾Ð´Ð°ÑÐ¸ Ð±Ð¾ÐºÐ¾Ð²Ð¾Ð³Ð¾ Ð¸Ð¼Ð¿ÑÐ»ÑÑÐ°
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Control of self-oscillating turbulent jet propagating in a thin rectangular cavity by secondary injection mass flow rates
Creators: name: ÐÑÐ°ÑÐ¸ÐºÐ¾Ð²Ð°, ÐÐ½Ð½Ð°
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2023
Subjects: Ð²ÐµÐ½ÑÐ¸Ð»Ð¸ÑÑÐµÐ¼Ð°Ñ Ð¿Ð¾Ð»Ð¾ÑÑÑ
URANS Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ
Ð°Ð²ÑÐ¾ÐºÐ¾Ð»ÐµÐ±Ð°Ð½Ð¸Ñ ÑÑÑÑÐ¸
ÑÐµÐ³ÑÐ»Ð¸ÑÑÑÑÐ¸Ðµ ÑÑÑÑÐ¸
ÑÐ¼ÐµÐ½Ð° ÑÐµÐ¶Ð¸Ð¼Ð¾Ð² ÑÐµÑÐµÐ½Ð¸Ñ
ventilation cavity
URANS modeling
self-oscilations
secondary jets
flow regimes transition

description: ÐÑÐ¾Ð²ÐµÐ´ÐµÐ½Ð¾ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ðµ, ÑÐ²ÑÐ·Ð°Ð½Ð½Ð¾Ðµ Ñ Ð¾ÑÐµÐ½ÐºÐ¾Ð¹ Ð²Ð¾Ð·Ð¼Ð¾Ð¶Ð½Ð¾ÑÑÐµÐ¹ ÑÐ¿ÑÐ°Ð²Ð»ÐµÐ½Ð¸Ñ ÑÑÑÑÐ¹Ð½ÑÐ¼ Ð¿Ð¾ÑÐ¾ÐºÐ¾Ð¼ Ð·Ð° ÑÑÐµÑ Ð²Ð¿ÑÑÑÐºÐ° Ð¼Ð°ÑÑÑ Ð½Ð¸Ð·ÐºÐ¾ÑÐ°ÑÑÐ¾Ð´Ð½Ð¾Ð¹ ÑÐµÐ³ÑÐ»Ð¸ÑÑÑÑÐµÐ¹ ÑÑÑÑÐ¸ Ð² Ð¾Ð±Ð»Ð°ÑÑÑ ÑÐ°ÑÐ¿ÑÐ¾ÑÑÑÐ°Ð½ÐµÐ½Ð¸Ñ Ð¾ÑÐ½Ð¾Ð²Ð½Ð¾Ð¹ ÑÑÑÑÐ¸. ÐÑÑÐµÑÐµÐ½Ð¸Ðµ Ð¾ÑÐ½Ð¾Ð²Ð½Ð¾Ð¹ ÑÑÑÑÐ¸ Ð¾ÑÑÑÐµÑÑÐ²Ð»ÑÐµÑÑÑ Ð¸Ð· Ð²ÑÐ´Ð²Ð¸Ð½ÑÑÐ¾Ð¹ ÑÑÑÐ±Ñ Ð²Ð½ÑÑÑÐ¸ ÑÐ·ÐºÐ¾Ð¹ Ð¿ÑÑÐ¼Ð¾ÑÐ³Ð¾Ð»ÑÐ½Ð¾Ð¹ Ð¿Ð¾Ð»Ð¾ÑÑÐ¸, Ð¾Ð´Ð½Ð° Ð¸Ð· Ð³ÑÐ°Ð½Ð¸Ñ ÐºÐ¾ÑÐ¾ÑÐ¾Ð¹ Ð¾ÑÐºÑÑÑÐ°. Ð§Ð¸ÑÐ»Ð¾ Ð ÐµÐ¹Ð½Ð¾Ð»ÑÐ´ÑÐ° Ð¾ÑÐ½Ð¾Ð²Ð½Ð¾Ð¹ ÑÑÑÑÐ¸ â 5.4Ã104. ÐÑÐ½Ð¾ÑÐµÐ½Ð¸Ñ ÑÐ°ÑÑÐ¾Ð´Ð¾Ð² ÑÐµÐ³ÑÐ»Ð¸ÑÑÑÑÐµÐ¹ Ð¸ Ð¾ÑÐ½Ð¾Ð²Ð½Ð¾Ð¹ ÑÑÑÑÐ¸ Ð¸Ð·Ð¼ÐµÐ½ÑÑÑÑÑ Ð¾Ñ 0 Ð´Ð¾ 23%, Ð¾ÑÐ½Ð¾ÑÐµÐ½Ð¸Ñ ÐºÐ¾Ð»Ð¸ÑÐµÑÑÐ² Ð´Ð²Ð¸Ð¶ÐµÐ½Ð¸Ñ â Ð¾Ñ 0 Ð´Ð¾ 42%. ÐÐ¾ÑÑÐ°Ð½Ð¾Ð²ÐºÐ° Ð·Ð°Ð´Ð°ÑÐ¸ ÑÐ¾Ð¾ÑÐ²ÐµÑÑÑÐ²ÑÐµÑ ÑÑÐ»Ð¾Ð²Ð¸ÑÐ¼ ÑÐºÑÐ¿ÐµÑÐ¸Ð¼ÐµÐ½ÑÐ° Lawson N.J. Ð¸ Ð´Ñ. 2005 Ð³Ð¾Ð´Ð°. Ð§Ð¸ÑÐ»ÐµÐ½Ð½Ð¾Ðµ Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ Ð¿ÑÐ¾Ð²ÐµÐ´ÐµÐ½Ð¾ Ð² Ð¿Ð°ÐºÐµÑÐµ ANSYS Fluent 2019R3 Ð½Ð° Ð¾ÑÐ½Ð¾Ð²Ðµ URANS Ð¿Ð¾Ð´ÑÐ¾Ð´Ð° Ðº Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ ÑÑÑÐ±ÑÐ»ÐµÐ½ÑÐ½Ð¾Ð³Ð¾ Ð´Ð²Ð¸Ð¶ÐµÐ½Ð¸Ñ. Ð ÑÐ°ÑÑÐµÑÐ°Ñ Ð²Ð¾ÑÐ¿ÑÐ¾Ð¸Ð·Ð²ÐµÐ´ÐµÐ½ Ð½ÐµÑÑÐ°ÑÐ¸Ð¾Ð½Ð°ÑÐ½ÑÐ¹ ÑÐµÐ¶Ð¸Ð¼ ÑÐ°ÑÐ¿ÑÐ¾ÑÑÑÐ°Ð½ÐµÐ½Ð¸Ñ Ð¾ÑÐ½Ð¾Ð²Ð½Ð¾Ð¹ ÑÑÑÑÐ¸ Ð² Ð¾ÑÑÑÑÑÑÐ²Ð¸Ðµ ÑÐµÐ³ÑÐ»Ð¸ÑÑÑÑÐ¸Ñ ÑÑÑÑÐ¹. ÐÑÐ¾Ð²ÐµÐ´ÐµÐ½ Ð°Ð½Ð°Ð»Ð¸Ð· Ð²Ð»Ð¸ÑÐ½Ð¸Ñ Ð²ÑÐ¾Ð´Ð½Ð¾Ð³Ð¾ ÑÑÐ»Ð¾Ð²Ð¸Ñ, Ð·Ð°Ð´Ð°Ð½Ð½Ð¾Ð³Ð¾ Ð´Ð»Ñ Ð¾ÑÐ½Ð¾Ð²Ð½Ð¾Ð¹ ÑÑÑÑÐ¸, Ð½Ð° ÐºÐ°ÑÑÐ¸Ð½Ñ Ð¸ÑÑÐµÑÐµÐ½Ð¸Ñ ÑÑÑÑÐ¸: Ð·Ð°Ð´Ð°Ð²Ð°Ð»ÑÑ Ð¾Ð´Ð½Ð¾ÑÐ¾Ð´Ð½ÑÐ¹ Ð¿ÑÐ¾ÑÐ¸Ð»Ñ Ð¸ Ð¿ÑÐ¾ÑÐ¸Ð»Ñ ÑÐºÐ¾ÑÐ¾ÑÑÐ¸, Ð¿Ð¾Ð»ÑÑÐµÐ½Ð½ÑÐ¹ Ð¸Ð· ÑÐµÑÐµÐ½Ð¸Ñ Ð·Ð°Ð´Ð°ÑÐ¸ Ð¾ ÑÐµÑÐµÐ½Ð¸Ð¸ Ð² ÐºÑÑÐ³Ð»Ð¾Ð¹ ÑÑÑÐ±Ðµ. ÐÐ·ÑÑÐµÐ½Ð¾ Ð²Ð»Ð¸ÑÐ½Ð¸Ðµ Ð²ÑÑÐ¾Ð´Ð½Ð¾Ð³Ð¾ ÑÑÐ»Ð¾Ð²Ð¸Ñ Ð½Ð° Ð¾ÑÐºÑÑÑÐ¾Ð¹ Ð³ÑÐ°Ð½Ð¸ÑÐµ Ð¿Ð¾Ð»Ð¾ÑÑÐ¸: Ð·Ð°Ð´Ð°Ð²Ð°Ð»ÑÑ Ð»Ð¸Ð±Ð¾ Ð¿Ð¾ÑÑÐ¾ÑÐ½Ð½ÑÐ¹ ÑÑÐ¾Ð²ÐµÐ½Ñ Ð´Ð°Ð²Ð»ÐµÐ½Ð¸Ñ, Ð»Ð¸Ð±Ð¾ Ðº Ð¾ÑÐºÑÑÑÐ¾Ð¹ Ð³ÑÐ°Ð½Ð¸ÑÐµ Ð´Ð¾ÑÑÑÐ°Ð¸Ð²Ð°Ð»Ð°ÑÑ Ð´Ð¾Ð¿Ð¾Ð»Ð½Ð¸ÑÐµÐ»ÑÐ½Ð°Ñ ÐºÑÐ±Ð¸ÑÐµÑÐºÐ°Ñ Ð¾Ð±Ð»Ð°ÑÑÑ Ð¸ Ð·Ð°Ð´Ð°Ð½Ð¸Ðµ Ð²ÑÑÐ¾Ð´Ð½Ð¾Ð³Ð¾ ÑÑÐ»Ð¾Ð²Ð¸Ñ Ð¸ÑÑÐ¸ÑÐ»ÑÐ»Ð¾ÑÑ Ð½Ð° Ð¾Ð´Ð½Ð¾Ð¹ Ð¸Ð· Ð³ÑÐ°Ð½Ð¸Ñ ÑÑÐ¾Ð¹ Ð¾Ð±Ð»Ð°ÑÑÐ¸. ÐÑÐ¸ Ð¿Ð¾Ð´Ð°ÑÐµ ÑÐµÐ³ÑÐ»Ð¸ÑÑÑÑÐµÐ¹ ÑÑÑÑÐ¸ Ð² Ð¿Ð¾Ð»Ð¾ÑÑÑ Ð² Ð·Ð°Ð²Ð¸ÑÐ¸Ð¼Ð¾ÑÑÐ¸ Ð¾Ñ ÑÐ¾Ð¾ÑÐ½Ð¾ÑÐµÐ½Ð¸Ñ Ð¼ÐµÐ¶Ð´Ñ Ð¸Ð¼Ð¿ÑÐ»ÑÑÐ°Ð¼Ð¸ Ð¾ÑÐ½Ð¾Ð²Ð½Ð¾Ð¹ Ð¸ ÑÐµÐ³ÑÐ»Ð¸ÑÑÑÑÐµÐ¹ ÑÑÑÑÐ¹ ÑÐ¾ÑÐ¼Ð¸ÑÑÐµÑÑÑ ÑÑÐ°ÑÐ¸Ð¾Ð½Ð°ÑÐ½ÑÐ¹ Ð¸Ð»Ð¸ Ð½ÐµÑÑÐ°ÑÐ¸Ð¾Ð½Ð°ÑÐ½ÑÐ¹ ÑÐµÐ¶Ð¸Ð¼ ÑÐµÑÐµÐ½Ð¸Ñ. ÐÐµÑÐµÑÐ¾Ð´ Ð¾Ñ Ð½ÐµÑÑÐ°ÑÐ¸Ð¾Ð½Ð°ÑÐ½Ð¾Ð³Ð¾ ÑÐµÐ¶Ð¸Ð¼Ð° Ðº ÑÑÐ°ÑÐ¸Ð¾Ð½Ð°ÑÐ½Ð¾Ð¼Ñ Ð´Ð»Ñ ÑÐ°ÑÑÐ¼Ð¾ÑÑÐµÐ½Ð½Ð¾Ð³Ð¾ Ð¿Ð¾Ð»Ð¾Ð¶ÐµÐ½Ð¸Ñ Ð±Ð¾ÐºÐ¾Ð²Ð¾Ð³Ð¾ Ð¾ÑÐ²ÐµÑÑÑÐ¸Ñ Ð¿ÑÐ¾Ð¸ÑÑÐ¾Ð´Ð¸Ñ Ð¿ÑÐ¸ Ð·Ð½Ð°ÑÐµÐ½Ð¸Ð¸ ÑÐ¾Ð¾ÑÐ½Ð¾ÑÐµÐ½Ð¸Ñ Ð¼ÐµÐ¶Ð´Ñ Ð¸Ð¼Ð¿ÑÐ»ÑÑÐ°Ð¼Ð¸ Ð¾ÐºÐ¾Ð»Ð¾ 10%. ÐÐ»Ñ ÑÑÐ°ÑÐ¸Ð¾Ð½Ð°ÑÐ½ÑÑ ÑÐµÐ¶Ð¸Ð¼Ð¾Ð² ÑÐµÑÐµÐ½Ð¸Ñ Ð±ÑÐ»Ð¾ Ð¾Ð¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ð¾ Ð¿Ð¾Ð»Ð¾Ð¶ÐµÐ½Ð¸Ðµ ÑÐ¾ÑÐºÐ¸ Ð¿ÑÐ¸Ð»Ð¸Ð¿Ð°Ð½Ð¸Ñ Ð¾ÑÐ½Ð¾Ð²Ð½Ð¾Ð¹ ÑÑÑÑÐ¸ Ðº Ð±Ð¾ÐºÐ¾Ð²Ð¾Ð¹ ÑÑÐµÐ½ÐºÐµ Ð¿Ð¾Ð»Ð¾ÑÑÐ¸ Ð¸ Ð¿Ð¾ÐºÐ°Ð·Ð°Ð½Ð¾, ÑÑÐ¾ Ð¿ÑÐ¸ Ð´Ð°Ð»ÑÐ½ÐµÐ¹ÑÐµÐ¼ ÑÐ²ÐµÐ»Ð¸ÑÐµÐ½Ð¸Ð¸ ÑÐºÐ¾ÑÐ¾ÑÑÐ¸ ÑÐµÐ³ÑÐ»Ð¸ÑÑÑÑÐµÐ¹ ÑÑÑÑÐ¸ ÑÑÑÑÐºÑÑÑÐ° ÑÐµÑÐµÐ½Ð¸Ñ Ð½Ðµ Ð¼ÐµÐ½ÑÐµÑÑÑ.
description: A study has been conducted related to the assessment of the possibilities of controlling a jet flow by injecting the mass of a low flow rate secondary jet into the area of the main jet propagation. The main jet outflow occurs from an extended tube within a narrow rectangular cavity, one of the boundaries of which is open. The Reynolds number of the main jet is 5.4Ã104. The flow rates of the secondary and main jets vary from 0 to 33%, the ratios of the momentum from 0 to 60%. The problem statement corresponds to the conditions of the experiment by Lawson N.J. et al., 2005. Numerical modeling was carried out in the ANSYS Fluent 2019R3 package. The problem was solved in a 3D setup based on the URANS approach to modeling turbulent motion using the standard k-Îµ model. The calculations reproduced the unsteady regime of the main jet propagation in the absence of secondary jets. An analysis was conducted of the influence of the input condition specified for the main jet on the jet outflow pattern: a homogeneous profile was set and the velocity profile obtained from the solution of the problem of flow in a round tube. The effect of the output condition on the open boundary of the cavity was studied: a constant pressure level was set at the open boundary, or an additional cubic area was built up to the open boundary and the output condition was set on one of the boundaries of this area. When a low flow rate secondary jet is supplied into the cavity, depending on the ratio between the impulses of the main and secondary jets, either steady or unsteady flow regimes are formed. The transition from the unsteady regime to the steady one for the considered position of the side secondary jet occurs at a value of the ratio between the impulses of about 10%. For steady flow regimes, the position of the main jets attachment point to the side wall of the cavity was determined. It was shown that with further increase in the secondary jet velocity, the airflow structure does not change.