Numerical Evaluation of the Flow Field of an Isothermal Dual-Corner Impinging Jet for Building Ventilation
The corner impinging jet ventilation is a new air distribution system for use in office environments. This study reports the mean flow field behavior of dual isothermal corner-placed inlets based on an impinging jet in a square-shaped room with the size of 7.2 m × 7.2 m. A detailed numerical study i...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-10-01
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| Series: | Buildings |
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| Online Access: | https://www.mdpi.com/2075-5309/12/10/1767 |
| _version_ | 1797474574060748800 |
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| author | Arman Ameen Haruna Yamasawa Tomohiro Kobayashi |
| author_facet | Arman Ameen Haruna Yamasawa Tomohiro Kobayashi |
| author_sort | Arman Ameen |
| collection | DOAJ |
| description | The corner impinging jet ventilation is a new air distribution system for use in office environments. This study reports the mean flow field behavior of dual isothermal corner-placed inlets based on an impinging jet in a square-shaped room with the size of 7.2 m × 7.2 m. A detailed numerical study is carried out to evaluate the influence the different configuration parameters, such as the inlet placement, same side or opposite side, and supply airflow rate, have on the flow field. The results show that the highest velocity peak for all cases is obtained at <i>x</i> = 0.5 m and the lowest at <i>x</i> = 3.5 m. The velocity profiles development remains similar when increasing the flow rate. For the zone evaluation, the results show that Case 1 and 2 (V = 20 L/s) meet the requirement of not exceeding 0.15 m/s during the heating season in the occupied zone according the BBR standard both for same-side and opposite-side configurations. For Case 4, the optimal placement of the inlets is opposite to each other when V = 30 L/s for the BBR requirements. Case 1, 2, 3, 4, 5, and 7 all meet the requirement of not exceeding 0.25 m/s during the cooling season both for the same-side and opposite-side configurations. For Case 8, the optimal placement of the inlets is opposite to each other when V = 50 L/s. |
| first_indexed | 2024-03-09T20:32:03Z |
| format | Article |
| id | doaj.art-70a0f1cdd0684d5a8a8904ae0fc82db4 |
| institution | Directory Open Access Journal |
| issn | 2075-5309 |
| language | English |
| last_indexed | 2024-03-09T20:32:03Z |
| publishDate | 2022-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Buildings |
| spelling | doaj.art-70a0f1cdd0684d5a8a8904ae0fc82db42023-11-23T23:19:43ZengMDPI AGBuildings2075-53092022-10-011210176710.3390/buildings12101767Numerical Evaluation of the Flow Field of an Isothermal Dual-Corner Impinging Jet for Building VentilationArman Ameen0Haruna Yamasawa1Tomohiro Kobayashi2Faculty of Engineering and Sustainable Development, Department of Building Engineering, Energy Systems and Sustainability Science, University of Gävle, 801 76 Gävle, SwedenFaculty of Engineering Sciences, Department of Advanced Environmental Science and Engineering, Kyushu University, 6-1 Kasuga-koen, Kasuga 816-8580, JapanDepartment of Architectural Engineering, Division of Global Architecture, Osaka University, 2-1 Yamadaoka, Suita 565-0871, JapanThe corner impinging jet ventilation is a new air distribution system for use in office environments. This study reports the mean flow field behavior of dual isothermal corner-placed inlets based on an impinging jet in a square-shaped room with the size of 7.2 m × 7.2 m. A detailed numerical study is carried out to evaluate the influence the different configuration parameters, such as the inlet placement, same side or opposite side, and supply airflow rate, have on the flow field. The results show that the highest velocity peak for all cases is obtained at <i>x</i> = 0.5 m and the lowest at <i>x</i> = 3.5 m. The velocity profiles development remains similar when increasing the flow rate. For the zone evaluation, the results show that Case 1 and 2 (V = 20 L/s) meet the requirement of not exceeding 0.15 m/s during the heating season in the occupied zone according the BBR standard both for same-side and opposite-side configurations. For Case 4, the optimal placement of the inlets is opposite to each other when V = 30 L/s for the BBR requirements. Case 1, 2, 3, 4, 5, and 7 all meet the requirement of not exceeding 0.25 m/s during the cooling season both for the same-side and opposite-side configurations. For Case 8, the optimal placement of the inlets is opposite to each other when V = 50 L/s.https://www.mdpi.com/2075-5309/12/10/1767dual-corner impinging jet ventilationcomputational fluid dynamicinlet configuration |
| spellingShingle | Arman Ameen Haruna Yamasawa Tomohiro Kobayashi Numerical Evaluation of the Flow Field of an Isothermal Dual-Corner Impinging Jet for Building Ventilation Buildings dual-corner impinging jet ventilation computational fluid dynamic inlet configuration |
| title | Numerical Evaluation of the Flow Field of an Isothermal Dual-Corner Impinging Jet for Building Ventilation |
| title_full | Numerical Evaluation of the Flow Field of an Isothermal Dual-Corner Impinging Jet for Building Ventilation |
| title_fullStr | Numerical Evaluation of the Flow Field of an Isothermal Dual-Corner Impinging Jet for Building Ventilation |
| title_full_unstemmed | Numerical Evaluation of the Flow Field of an Isothermal Dual-Corner Impinging Jet for Building Ventilation |
| title_short | Numerical Evaluation of the Flow Field of an Isothermal Dual-Corner Impinging Jet for Building Ventilation |
| title_sort | numerical evaluation of the flow field of an isothermal dual corner impinging jet for building ventilation |
| topic | dual-corner impinging jet ventilation computational fluid dynamic inlet configuration |
| url | https://www.mdpi.com/2075-5309/12/10/1767 |
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