Wind, rain and the building envelope: studies at the Laboratory of Building Physics, KULeuven

B.J.E. Blocken, W. Desadeleer, J.E. Carmeliet

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

Abstract

Driving rain is one of the most important moisture sources affecting building envelopes. Until recently, information on driving rain was gathered by employing either an experimental or a semi-empirical approach. As research efforts continued to reveal the inherent complexity of the problem, researchers realized that further achievements were to be found through numerical analyses. In the past decade, Computational Fluid Dynamics (CFD) has made its introduction in the area. Choi (1993; 1994a; 1994b) developed a numerical simulation technique to determine the distribution of driving rain on buildings under steady-state conditions of wind and rain. A numerical method for estimating transient driving rain loads was introduced by Blocken and Carmeliet (2000a; 2000b). Van Mook (1999) and Hangan (1999) provided a first experimental verification of the steady-state simulation technique. Verification efforts for the transient numerical method are reported in Blocken and Carmeliet (2000a; 2002). The current paper is an attempt to illustrate the practical use of the numerical method and to give some further insight in the interaction between wind, rain and the building envelope. First, the catch ratio as a measure for the amount of driving rain falling on building facades is defined. Next, the transient numerical method is briefly outlined. Finally, two case studies that were recently conducted at the Laboratory of Building Physics are described.
Original languageEnglish
Title of host publicationProceedings 6th Symposium on Building Physics in the Nordic Countries, Trondheim, Norway
Pages579-586
Publication statusPublished - 2002
Event6th Nordic Symposium on Building Physics (NSB 2002), June 17-19, 2002, Trondheim, Norway - Trondheim, Norway
Duration: 17 Jun 200219 Jun 2002

Conference

Conference6th Nordic Symposium on Building Physics (NSB 2002), June 17-19, 2002, Trondheim, Norway
Abbreviated titleNSB 2002
CountryNorway
CityTrondheim
Period17/06/0219/06/02

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