TY - GEN
T1 - Effect of Opening Ratios with and Without Louvers in Cross Ventilation Using CFD
AU - Moey, Lip Kean
AU - Alyazidi, Saleh Mohammed Saleh
AU - Tai, Vin Cent
AU - Kai-Seun, Joseph Wu
AU - Mathew, Prasath Reuben
AU - Oumer, Ahmed Nurye
N1 - Publisher Copyright:
© 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.
PY - 2023
Y1 - 2023
N2 - As the world marches forward implementing concepts of sustainable buildings, higher reliance on natural ventilation can be obtained through louvers. In this research of cross ventilation in a generic isolated building, the leeward opening sizes were manipulated to 1:1, 1:0.25 and 1:0.5, with louver angles of 0°, 15°, 30°, 45° and no louvers. An Atmospheric Boundary Layer (ABL) condition was applied at the inlet of the flow domain and a 3D-steady Reynolds-Averaged Navier–Stokes (RANS) equation was solved with the Shear Stress Transport (SST) k-ω turbulence model. Mesh sensitivity analysis and model validation were performed as per best practices. The results show that as the size of the leeward opening decreases, the acceleration through the louver blades increases. In the absence and presence of louvers, as the windward-louver (W-L) ratio increased from 1:0.25 to 1:1, its dimensionless flow rate (DFR) increases. Highest DFR was obtained when the W-L ratio was 1:1 and the louver angle was 0°, second to louver angle of 15°, followed by the configuration without louvers present. Their respective DFR values were 0.588, 0.544 and 0.522. As the louver angle increased from 0° to 45°, the DFR reduced for all opening W-L ratios.
AB - As the world marches forward implementing concepts of sustainable buildings, higher reliance on natural ventilation can be obtained through louvers. In this research of cross ventilation in a generic isolated building, the leeward opening sizes were manipulated to 1:1, 1:0.25 and 1:0.5, with louver angles of 0°, 15°, 30°, 45° and no louvers. An Atmospheric Boundary Layer (ABL) condition was applied at the inlet of the flow domain and a 3D-steady Reynolds-Averaged Navier–Stokes (RANS) equation was solved with the Shear Stress Transport (SST) k-ω turbulence model. Mesh sensitivity analysis and model validation were performed as per best practices. The results show that as the size of the leeward opening decreases, the acceleration through the louver blades increases. In the absence and presence of louvers, as the windward-louver (W-L) ratio increased from 1:0.25 to 1:1, its dimensionless flow rate (DFR) increases. Highest DFR was obtained when the W-L ratio was 1:1 and the louver angle was 0°, second to louver angle of 15°, followed by the configuration without louvers present. Their respective DFR values were 0.588, 0.544 and 0.522. As the louver angle increased from 0° to 45°, the DFR reduced for all opening W-L ratios.
KW - CFD
KW - Cross ventilation
KW - Louver
KW - Opening ratio
UR - http://www.scopus.com/inward/record.url?scp=85136986438&partnerID=8YFLogxK
U2 - 10.1007/978-981-19-1457-7_45
DO - 10.1007/978-981-19-1457-7_45
M3 - Conference contribution
AN - SCOPUS:85136986438
SN - 9789811914560
T3 - Lecture Notes in Mechanical Engineering
SP - 579
EP - 594
BT - Technological Advancement in Mechanical and Automotive Engineering. ICMER 2021
A2 - Ismail, Muhammad Yusri
A2 - Mohd Sani, Mohd Shahrir
A2 - Kumarasamy, Sudhakar
A2 - Hamidi, Mohd Adnin
A2 - Shaari, Mohd Shamil
PB - Springer
T2 - 6th International Conference in Mechanical Engineering Research 2021
Y2 - 26 October 2021 through 27 October 2021
ER -