PIV experimental study of airflow structures in a multi-slot ventilation enclosure with opposed jets
| Autor: | Wang Congcong, Gao Xuening, Li Jiayu, Chen Hongbing |
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| Jazyk: | English<br />French |
| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | E3S Web of Conferences, Vol 356, p 04004 (2022) |
| Druh dokumentu: | article |
| ISSN: | 2267-1242 20223560 |
| DOI: | 10.1051/e3sconf/202235604004 |
| Popis: | The airflow structure of enclosure directly affects the spread of COVID-19 and is also closely related to indoor air quality, thermal comfort of personnel, and building energy consumption. Although a large number of studies on the airflow field have been conducted under mixing and displacement ventilation with a single air inlet in rectangular rooms. However, to the best of the authors knowledge, only a limited number of studies have dealt with airflow structures in a multi-slot ventilation enclosure with opposed jets. Therefore, this paper uses PIV to study the velocity and entropy of unstable airflow field in a multi-slot ventilation enclosure with opposed jets under isothermal and non-isothermal conditions. And this paper presents due to the collision of the jets to form two large-scale eddies, the airflow field structure being unstable. In the region without air supply inlets and exhaust outlets, a large-scale vortex is formed in the airflow field, resulting in high information entropy of the flow field. The thermal plume suppresses the large-scale flow field structure and increases the small-scale flow field structure. |
| Databáze: | Directory of Open Access Journals |
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