title: Ð§Ð¸ÑÐ»ÐµÐ½Ð½Ð¾Ðµ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ðµ ÑÐ°Ð·Ð»Ð¸ÑÐ½ÑÑ ÑÐµÐ¶Ð¸Ð¼Ð¾Ð² ÑÐ°ÑÐ¿ÑÐ¾ÑÑÑÐ°Ð½ÐµÐ½Ð¸Ñ Ð¿Ð»Ð¾ÑÐºÐ¾Ð¹ Ð²Ð¾Ð·Ð´ÑÑÐ½Ð¾Ð¹ ÑÑÑÑÐ¸ Ð² Ð¿ÑÑÐ¼Ð¾ÑÐ³Ð¾Ð»ÑÐ½Ð¾Ð¹ Ð¿Ð¾Ð»Ð¾Ñ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: Numerical simulation of various flow regimes of a plain air jet flowing into a rectangular cavity
Creators: name: ÐÑÐ´ÑÑÐ²ÑÐµÐ²Ð°, ÐÐ°ÑÐ¸Ð»Ð¸ÑÐ°
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: 2020
Subjects: Ð²Ð¾Ð·Ð´ÑÑÐ½Ð°Ñ ÑÑÑÑÑ
ÑÑÑÐ±ÑÐ»ÐµÐ½ÑÐ½Ð¾Ðµ ÑÐµÑÐµÐ½Ð¸Ðµ
ÑÐ¸ÑÐ»ÐµÐ½Ð½Ð¾Ðµ Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ
ÑÐµÐ¶Ð¸Ð¼Ñ Ð¸ÑÑÐµÑÐµÐ½Ð¸Ñ ÑÑÑÑÐ¸
air jet
turbulent flow
numerical simulation
flow regimes of a jet

description: Ð¢ÐµÐ¼Ð° Ð²ÑÐ¿ÑÑÐºÐ½Ð¾Ð¹ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÑ: Â«Ð§Ð¸ÑÐ»ÐµÐ½Ð½Ð¾Ðµ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ðµ ÑÐ°Ð·Ð»Ð¸ÑÐ½ÑÑ ÑÐµÐ¶Ð¸Ð¼Ð¾Ð² ÑÐ°ÑÐ¿ÑÐ¾ÑÑÑÐ°Ð½ÐµÐ½Ð¸Ñ Ð¿Ð»Ð¾ÑÐºÐ¾Ð¹ Ð²Ð¾Ð·Ð´ÑÑÐ½Ð¾Ð¹ ÑÑÑÑÐ¸ Ð² Ð¿ÑÑÐ¼Ð¾ÑÐ³Ð¾Ð»ÑÐ½Ð¾Ð¹ Ð¿Ð¾Ð»Ð¾ÑÑÐ¸Â».
ÐÑÐ¿Ð¾Ð»Ð½ÐµÐ½Ð¾ ÑÐ¸ÑÐ»ÐµÐ½Ð½Ð¾Ðµ Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ Ð¸ÑÑÐµÑÐµÐ½Ð¸Ñ Ð²Ð¾Ð·Ð´ÑÑÐ½Ð¾Ð¹ ÑÑÑÑÐ¸ Ð¸Ð· ÑÐµÐ»ÐµÐ²Ð¾Ð³Ð¾ ÑÐ¾Ð¿Ð»Ð° Ð² Ð¿ÑÑÐ¼Ð¾ÑÐ³Ð¾Ð»ÑÐ½ÑÑ Ð¿Ð¾Ð»Ð¾ÑÑÑ Ð² ÑÑÐ»Ð¾Ð²Ð¸ÑÑ ÑÐºÑÐ¿ÐµÑÐ¸Ð¼ÐµÐ½ÑÐ° A. Mataoui (2001 Ð³.). ÐÐ»Ñ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ð¹ Ð²ÑÐ±ÑÐ°Ð½Ñ ÑÑÐ¸ Ð²Ð°ÑÐ¸Ð°Ð½ÑÐ° ÑÐ°ÑÐ¿Ð¾Ð»Ð¾Ð¶ÐµÐ½Ð¸Ñ ÑÐ¾Ð¿Ð»Ð° Ð² Ð¿Ð¾Ð»Ð¾ÑÑÐ¸, Ð¾ÑÐ½Ð¾ÑÑÑÐ¸ÐµÑÑ Ðº Ð´Ð²ÑÐ¼ ÑÐµÐ¶Ð¸Ð¼Ð°Ð¼ ÑÐ°ÑÐ¿ÑÐ¾ÑÑÑÐ°Ð½ÐµÐ½Ð¸Ñ ÑÑÑÑÐ¸: ÑÑÐ°ÑÐ¸Ð¾Ð½Ð°ÑÐ½Ð¾Ð¼Ñ Ð¸ Ð½ÐµÑÑÐ°ÑÐ¸Ð¾Ð½Ð°ÑÐ½Ð¾Ð¼Ñ Ñ Ð¿ÐµÑÐ¸Ð¾Ð´Ð¸ÑÐµÑÐºÐ¸Ð¼Ð¸ ÐºÐ¾Ð»ÐµÐ±Ð°Ð½Ð¸ÑÐ¼Ð¸. Ð Ð°ÑÑÐµÑÑ Ð¿ÑÐ¾Ð²ÐµÐ´ÐµÐ½Ñ Ð² Ð´Ð²ÑÐ¼ÐµÑÐ½Ð¾Ð¹ Ð¿Ð¾ÑÑÐ°Ð½Ð¾Ð²ÐºÐµ Ñ Ð¿Ð¾Ð¼Ð¾ÑÑÑ Ð³Ð¸Ð´ÑÐ¾Ð´Ð¸Ð½Ð°Ð¼Ð¸ÑÐµÑÐºÐ¾Ð³Ð¾ Ð¿Ð°ÐºÐµÑÐ° ANSYS Fluent 19.1. ÐÐ¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ ÑÑÑÐ±ÑÐ»ÐµÐ½ÑÐ½Ð¾ÑÑÐ¸ Ð¾ÑÑÑÐµÑÑÐ²Ð»ÑÐ»Ð¾ÑÑ Ð½Ð° Ð¾ÑÐ½Ð¾Ð²Ðµ RANS/URANS Ð¿Ð¾Ð´ÑÐ¾Ð´Ð° Ñ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸ÐµÐ¼ ÑÐ°Ð·Ð»Ð¸ÑÐ½ÑÑ Ð¼Ð¾Ð´ÐµÐ»ÐµÐ¹ ÑÑÑÐ±ÑÐ»ÐµÐ½ÑÐ½Ð¾ÑÑÐ¸: Standard k-Îµ, k-Îµ RNG, k-Ï SST Ð¸ Spalart-Allmaras. Ð ÐµÐ·ÑÐ»ÑÑÐ°ÑÑ ÑÐ¸ÑÐ»ÐµÐ½Ð½Ð¾Ð³Ð¾ Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ ÐºÐ°Ðº Ð´Ð»Ñ ÑÑÐ°ÑÐ¸Ð¾Ð½Ð°ÑÐ½ÑÑ, ÑÐ°Ðº Ð¸ Ð´Ð»Ñ Ð½ÐµÑÑÐ°ÑÐ¸Ð¾Ð½Ð°ÑÐ½Ð¾Ð³Ð¾ ÑÐµÐ¶Ð¸Ð¼Ð¾Ð² ÑÐµÑÐµÐ½Ð¸Ñ Ð´Ð¾ÑÑÐ°ÑÐ¾ÑÐ½Ð¾ ÑÐ¾ÑÐ¾ÑÐ¾ ÑÐ¾Ð³Ð»Ð°ÑÑÑÑÑÑ Ñ Ð´Ð°Ð½Ð½ÑÐ¼Ð¸ ÑÐ¸Ð·Ð¸ÑÐµÑÐºÐ¾Ð³Ð¾ ÑÐºÑÐ¿ÐµÑÐ¸Ð¼ÐµÐ½ÑÐ°. ÐÐ»Ñ Ð¾Ð´Ð½Ð¾Ð³Ð¾ Ð¸Ð· ÑÑÐ°ÑÐ¸Ð¾Ð½Ð°ÑÐ½ÑÑ ÑÐµÐ¶Ð¸Ð¼Ð¾Ð² ÑÐµÑÐµÐ½Ð¸Ñ ÑÐ¸ÑÐ»ÐµÐ½Ð½Ð¾Ðµ Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ Ð¿ÑÐµÐ´ÑÐºÐ°Ð·ÑÐ²Ð°ÐµÑ Ð½ÐµÐµÐ´Ð¸Ð½ÑÑÐ²ÐµÐ½Ð½Ð¾ÑÑÑ ÑÐµÑÐµÐ½Ð¸Ñ â Ð¿ÑÐ¸ Ð·Ð°Ð´Ð°Ð½Ð¸Ð¸ Ð¾Ð´Ð¸Ð½Ð°ÐºÐ¾Ð²ÑÑ Ð³ÑÐ°Ð½Ð¸ÑÐ½ÑÑ ÑÑÐ»Ð¾Ð²Ð¸Ð¹ Ð² Ð·Ð°Ð²Ð¸ÑÐ¸Ð¼Ð¾ÑÑÐ¸ Ð¾Ñ Ð¿ÑÐµÐ´ÑÑÑÐ¾ÑÐ¸Ð¸ Ð¿Ð¾ÑÐ¾ÐºÐ° Ð¼Ð¾Ð¶Ð½Ð¾ Ð¿Ð¾Ð»ÑÑÐ¸ÑÑ Ð´Ð²Ð° ÑÑÑÐ¾Ð¹ÑÐ¸Ð²ÑÑ, ÐºÐ°ÑÐµÑÑÐ²ÐµÐ½Ð½Ð¾ ÑÐ°Ð·Ð»Ð¸ÑÐ°ÑÑÐ¸ÑÑÑ ÑÐµÑÐµÐ½Ð¸Ñ, Ð¾Ð´Ð½Ð¾ Ð¸Ð· ÐºÐ¾ÑÐ¾ÑÑÑ ÑÐ¾Ð¾ÑÐ²ÐµÑÑÑÐ²ÑÐµÑ ÑÑÑÑÐºÑÑÑÐµ ÑÐµÑÐµÐ½Ð¸Ñ, Ð½Ð°Ð±Ð»ÑÐ´Ð°ÐµÐ¼Ð¾Ð¹ Ð² ÑÐºÑÐ¿ÐµÑÐ¸Ð¼ÐµÐ½ÑÐµ.
description: The subject of the graduate qualification work is âNumerical simulation of various flow regimes of a plain air jet flowing into a rectangular cavityâ.
The numerical simulation of a plain air jet flowing from a parallel-plate nozzle into a rectangular cavity under conditions of the A. Mataoui (2001) experiment was carried out. Three locations of the nozzle in the cavity corresponding to two jet flow regimes were chosen for the present research: steady and unsteady regimes with periodical oscillations. Calculations were performed in two-dimensional formulation using the CFD code ANSYS Fluent 19.1. Turbulence modelling was carried out using RANS/URANS approach with various turbulence models: Standard k-Îµ, k-Îµ RNG, k-Ï SST Ð¸ Spalart-Allmaras. The results of numerical simulations are in a good agreement with the experimental data for both steady and unsteady regimes. For one of the steady regimes numerical simulations predict nonunique solution: specifying identical boundary conditions it is possible to obtain two stable qualitatively different solutions depending on the flow background, one of these solutions corresponds to the flow structure observed experimentally.