The Study of Wind Driver Rain for a Secondary Façade. Case Study: Low Income Housing in Jakarta

Purwanta Wilson


This research was aimed to generate a secondary façade that would function as a rainwater harvesting system.  This study is conducted since there is a need of alternative water source.  Rain water is a potential water source that can be used for the inhabitants. In order to harvest more rain water, here, the vertical façade will be used beside the roof top. It is considered since the direction of rain water with the particle of 0.25 mm is greatly driven by the wind; so, that the vertical façade could effectively catch the water. To facilitate this study, essentially the study applied the basic principle of velocity and impact of wind driven rain on building façade that has been formulated by Edmund Choi (1997).  Furthermore, a simulation study, that uses Flow Design and CFD, was also conducted to   calculate the angle of the rain water direction. Another simulation study using parametric study was also conducted to generate the secondary façade.  This study has shown that the secondary façade can be beneficial to fulfil the lack of water source as well as to protect the building itself from degradation as the impact of rain. (WP)

Keywords — parametric study; simulation study secondary façade; velocity and wind driven rain;

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