CFD Analysis of Wind-Driven Natural Ventilation in Building Models
DOI:
https://doi.org/10.31695/IJERAT.2021.3602Keywords:
Natural Ventilation, CFD,, CO2 dispersion, IAQ, Thermal comfortAbstract
This paper studied wind-driven natural ventilation in a room using a computational fluid dynamics model in order to determine the airflow pattern, draft and pollutant dispersion within the CFD model. The different natural ventilation strategies were studied in cases namely: CASE 1(Single sided ventilation), CASE 2(Cross Ventilation), CASE 3(Bernoulli and Cross Ventilation), and CASE 4(Double single-sided ventilation). The CFD simulation was performed with the 3D steady-state RANS approach using RNG-KE turbulent model to provide closure. From the result obtained, the author found out that Firstly, CASE 1 and CASE 4 showed a reduced level of air draft (V< 0.2m/s) within the room unlike the CASE 2 and CASE 3 where the airspeed on the room occupants most especially at the ankle and head region were much higher than that recommended as per BS EN 7730. Secondly, CASE 2 showed greater efficiency in dealing with pollutant dispersion then followed by CASE 3 and CASE 4 respectively. The concentrations in almost every part of the room for CASE 2 were well within the acceptable range recommended for human occupancy as per BS EN 7730.
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Copyright (c) 2021 Okafor Chinedu Vincent, Okeke Arinze Uchenna, Ononye Olisa Roy
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
