title: ÐÐ»Ð¸ÑÐ½Ð¸Ðµ Ð»Ð¾ÐºÐ°Ð»ÑÐ½Ð¾Ð³Ð¾ Ð¿ÑÐµÐ¿ÑÑÑÑÐ²Ð¸Ñ Ð½Ð° Ð²Ð¾Ð·Ð´ÑÑ Ð¾ÑÐ°ÑÐ¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ð¸Ðµ Ð² Ð¿Ð¾Ð¼ÐµÑÐµÐ½Ð¸Ð¸, Ð²ÐµÐ½ÑÐ¸Ð»Ð¸ÑÑÐµÐ¼Ð¾Ð¼ Ð¿Ð»Ð¾ÑÐºÐ¾Ð¹ Ð¿ÑÐ¸Ð¿Ð¾ÑÐ¾Ð»Ð¾ÑÐ½Ð¾Ð¹ ÑÑÑÑÐµÐ¹
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: Influence of a local obstacle on air distribution in a room ventilated by a flat ceiling jet
Creators: name: ÐÐ°ÑÐ»Ð¾Ð½Ð¾Ð²Ð°, ÐÐ½Ð°ÑÑÐ°ÑÐ¸Ñ
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: ÑÑÑÐ±ÑÐ»ÐµÐ½ÑÐ½Ð¾Ðµ ÑÐµÑÐµÐ½Ð¸Ðµ
Ð¿ÑÐ¸ÑÑÐµÐ½Ð½Ð°Ñ ÑÑÑÑÑ
ÑÐ¸ÑÐ»ÐµÐ½Ð½Ð¾Ðµ Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ
Ð²Ð¾Ð·Ð´ÑÑ Ð¾ÑÐ°ÑÐ¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ð¸Ðµ
Ð¸Ð½ÑÐµÐ½ÑÐ¸Ð²Ð½Ð¾ÑÑÑ ÑÐºÐ²Ð¾Ð·Ð½ÑÐºÐ°
turbulent flow
near-wall jet
numerical simulation
air distribution
draught rate

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description: The work is devoted to the study of the distribution in a test room of a plain turbulent wall jet. The jet is supplied from a ceiling air inlet, at a certain distance from which a rectangular obstacle is placed. In the work the influence on the flow structure of the supplied flow rate (Reynolds number), the size and location of the obstacle, and also the length of the test room was studied. Numerical simulation was performed in a two-dimensional formulation using the ANSYS Fluent 2019 R3 software.
Studies have shown that depending on the location and size of the obstacle, two flow modes can be realized: when the jet sticks to the wall behind the obstacle and when the jet deflects and forms a closed circulation zone in the vicinity of the air inlet. In the study of the influence of the size and location of the obstacle on the flow structure, the dependences of the critical height of the obstacle on the distance from the inlet to it are obtained for three different lengths of the room. On the example of one of the calculation options, the hysteresis region for the critical height is determined. Based on the data on the velocity fields, a draught rate was calculated, which allowed to estimate the level of comfort in the room for two different flow patterns.