Paper Conference

Proceedings of Building Simulation 2021: 17th Conference of IBPSA


Wind turbulence impact in ventilation engineering applied on buildings

Ali Esber 1,2,3, Xavier Faure 1, Fancois Demouge 2, Etienne Wurtz 1, Simon Rouchier 3
1 CEA, Commissariat à l'énergie atomique et aux énergies alternatives, France
2 CSTB, Centre scientifique et technique du bâtiment,France
3 USMB, Université Savoie Mont Blanc, France

Abstract: Infiltration caused by wind turbulence is difficult to predict because this turbulence is a disorder and a nonlocal phenomena. The presented study aims to validate the assumption of quasi-staticity, to understand aerodynamic effects induced by the external wind on global performance of ventilation systems (energy, air quality, humidity) and to find the relation between the mean wind velocity and the wind spectrum. Previous studies showed the importance to take into account the pressure fluctuation inside building not only the facade pressure. The simulation done with MATHIS helps to predict the situation in the ventilation engineering. Results show that we cannot apply the quasi-static assumption and that the effect of the turbulence cannot be neglected.
Keywords: Indoor environment quality, Ventilation system, Wind turbulence, pressure fluctuation.
Pages: 2719 - 2726