This article analyses the modelling of the wind-driven-rain load on building facades by partial simplification of a complex CFD-based method along the lines of the European Standard method. The results indicate that the directional dependence of the wind-driven-rain coefficient is not of substantial importance. A constant wind-driven-rain coefficient appears to be an oversimplification though: the full variability with the perpendicular wind speed and horizontal rain intensity should be preserved, where feasible, for improved estimations of the moisture transfer in building components.

In the concluding section, it is moreover shown that the dependence of the surface moisture transfer coefficient on wind speed has an equally important influence on the moisture transfer in building components.

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• wind-driven rain: CFD models

1. A comparison of the Nordtest and Japanese test methods for the moisture buffering performance of building materials
2. Conservative modelling of the moisture and heat transfer in building components under atmospheric excitation
3. Impact, absorption and evaporation of raindrops on building facades
4. In situ determination of the moisture buffer potential of room enclosures
5. Qualitative and quantitative assessment of interior moisture buffering by enclosures
6. The influence of soil moisture in the unsaturated zone on the heat loss from buildings via the ground
7. The influence of soil moisture transfer on building heat loss via the ground  

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

1. A comparison of different techniques to quantify moisture content profiles in porous building materials
2. A comparison of the Nordtest and Japanese test methods for the moisture buffering performance of building materials
3. A quasi-steady state implementation of air convection in a transient heat and moisture building component model
4. Description of the moisture capacity of building materials
5. Determination of the isothermal moisture transport properties of porous building materials
6. Determination of the liquid water diffusivity from transient moisture transfer experiments
7. Determination of the moisture capacity of porous building materials
8. Impact, absorption and evaporation of raindrops on building facades
9. In situ determination of the moisture buffer potential of room enclosures
10. Microscopic analysis of imbibition processes in oolitic limestone
11. Modeling fluid flow in fractured media using continuum, network and discrete aproaches
12. Position paper on material characterization and HAM model benchmarking
13. Qualitative and quantitative assessment of interior moisture buffering by enclosures
14. Review of mould prediction models and their influence on mould risk evaluation
15. Simulating non-isothermal water vapour transfer: an experimental validation on multi-layered building components  

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