Wind-driven rain (WDR) is one of the most important boundary conditions for hygrothermal building envelope analysis. Although Computational Fluid Dynamics (CFD) simulation of WDR on building facades has been applied intensively in the past decade, validation is still quite limited, and most previous validation efforts have fo-cused either on wind directions perpendicular to the facade or on buildings of complex geometry. This paper addresses CFD simulations of WDR on the west facade of a simple, rectangular low-rise test building for various oblique winds and CFD validation by comparing the simulation results with full-scale measurements. It is shown that overall, fairly accurate results can be obtained, but that the numerical simulations can significantly underestimate the WDR amounts near the downwind edge of the facade when the wind direction is increasingly oblique. These discrepancies are at least partly attributed to the very small impact angles of the raindrops at these facade positions and the resulting inaccuracies in the numerical model.
|Title of host publication||Proceedings of the 4th International Conference on Advances in Wind and Structures (AWAS08), 29-31 May 2008, Jeju, Korea|
|Editors||CK Choi, JD Holmes, YD Kim, HG Kwak|
|Place of Publication||Korea|
|Publication status||Published - 2008|
|Event||4th International Conference on Advances in Wind and Structures,28-30 May 2008, Jeju Island, Korea - Jeju Island, Korea, Republic of|
Duration: 28 May 2008 → 30 May 2008
|Conference||4th International Conference on Advances in Wind and Structures,28-30 May 2008, Jeju Island, Korea|
|Country||Korea, Republic of|
|Period||28/05/08 → 30/05/08|
Abuku, M., Blocken, B. J. E., Nore, K., Thue, J. V., Carmeliet, J. E., & Roels, S. (2008). Validation of wind-driven rain simulation on a building for oblique winds. In CK. Choi, JD. Holmes, YD. Kim, & HG. Kwak (Eds.), Proceedings of the 4th International Conference on Advances in Wind and Structures (AWAS08), 29-31 May 2008, Jeju, Korea Techno Press.