Wind-driven rain is one of the most important boundary conditions for numerical Heat-Air-Moisture (HAM) transfer models. Due to the complexity of WDR however, the current HAM models generally incorporate it in a very simplified way. Recent research has shown that CFD can provide accurate estimates of WDR on building facades. Therefore, in this paper, a combined CFD-HAM approach is presented. It is applied for a simplified wall model. It is shown that the accuracy of the HAM-simulation results is to a large extent determined by the time resolution of the meteorological input data and by the data-averaging technique used for these data. Some guidelines for accurate HAM analyses with WDR are provided.
|Title of host publication||Proceedings of the 3rd International Building Physics Conference (3IBPC), Montreal, Quebec, Canada|
|Editors||P. Fazio, H. Ge, J. Rao, G. Desmarais|
|Place of Publication||Great Britain|
|Publisher||Taylor and Francis Ltd.|
|Publication status||Published - 2006|
|Event||3rd International Building Physics Conference (IBPC 2006) - Montréal, QC, Canada|
Duration: 27 Aug 2006 → 31 Aug 2006
Conference number: 3
|Name||Proceedings and Monographs in Engineering, Water and Earth Sciences|
|Conference||3rd International Building Physics Conference (IBPC 2006)|
|Abbreviated title||IBPC 2006|
|Period||27/08/06 → 31/08/06|
|Other||"Research in Building Physics and Building Engineering"|
Blocken, B. J. E., Roels, S., & Carmeliet, J. E. (2006). CFD wind-driven rain simulations and their use for HAM modeling. In P. Fazio, H. Ge, J. Rao, & G. Desmarais (Eds.), Proceedings of the 3rd International Building Physics Conference (3IBPC), Montreal, Quebec, Canada (pp. 889-896). (Proceedings and Monographs in Engineering, Water and Earth Sciences). Taylor and Francis Ltd..