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

Blocken, B., Desadeleer, W. and Carmeliet, J.
2002
6th Symposium on Building Physics in the Nordic Countries, Trondheim, Norway, Jun 17

Blocken, B., Desadeleer, W. and Carmeliet, J., (2002), "Wind, rain and the building envelope: studies at the Laboratory of Building Physics, KULeuven", 6th Symposium on Building Physics in the Nordic Countries, Trondheim, Norway, Jun 17.
Abstract:
INTRODUCTION

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.
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Author Information and Other Publications Notes
Blocken, B.
Laboratory of Building Physics, Department of Civil Engineering, Katholieke Universiteit, Leuven, Belgium. http://perswww.kuleuven.ac.be/~u0008129/
  1. A review of wind-driven rain research in building science
  2. A simplified numerical model for rainwater runoff on building facades: Possibilities and limitations
  3. Conservative modelling of the moisture and heat transfer in building components under atmospheric excitation
  4. Driving rain on building envelopes II: representative experimental data for driving rain estimation
  5. Pedestrian wind environment around buildings: literature review and practical examples
  6. Quantification of driving rain as a boundary condition for water flow modelling in building parts
  7. Rainwater runoff from building facades: A review
  8. Spatial and temporal distribution of driving rain on a low-rise building
  9. Spatial and temporal distribution of driving rain on buildings: numerical simulation and experimental verification
  10. Validation of external BES-CFD coupling by inter-model comparison
  11. Wind-driven rain as a boundary condition for HAM simulations: Analysis of simplified modelling approaches  
Desadeleer, W.
     
Carmeliet, J.
Department of Civil Engineering Laboratory of Building Physics, Catholic University of Leuven, Belgium
  1. A comparison of different techniques to quantify moisture content profiles in porous building materials
  2. A multiscale network model for simulating moisture transfer properties of porous media
  3. A review of wind-driven rain research in building science
  4. A simplified numerical model for rainwater runoff on building facades: Possibilities and limitations
  5. Conservative modelling of the moisture and heat transfer in building components under atmospheric excitation
  6. Description of the moisture capacity of building materials
  7. Determination of the isothermal moisture transport properties of porous building materials
  8. Determination of the liquid water diffusivity from transient moisture transfer experiments
  9. Determination of the moisture capacity of porous building materials
  10. Driving rain on building envelopes II: representative experimental data for driving rain estimation
  11. Microscopic analysis of imbibition processes in oolitic limestone
  12. Modeling fluid flow in fractured media using continuum, network and discrete aproaches
  13. Pedestrian wind environment around buildings: literature review and practical examples
  14. Performance prediction for masonry walls with EIFS using calculation procedures and laboratory testing
  15. Position paper on material characterization and HAM model benchmarking
  16. Rainwater runoff from building facades: A review
  17. Simulating non-isothermal water vapour transfer: an experimental validation on multi-layered building components
  18. Spatial and temporal distribution of driving rain on a low-rise building
  19. The influence of soil moisture in the unsaturated zone on the heat loss from buildings via the ground
  20. Wind-driven rain as a boundary condition for HAM simulations: Analysis of simplified modelling approaches  


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