An accurate method for the quantification of real-life driving rain loads on building envelopes from generally available climatic data such as wind speed, wind direction and horizontal rainfall intensity serves various purposes, from the development of design guidelines for building envelopes to the incorporation of driving rain loads as a boundary condition in Heat-Air-Moisture (HAM) transfer analysis models. In this paper, an existing numerical technique for driving rain simulation is incorporated into a practical numerical method to estimate driving rain loads on building envelopes based on the building geometry and the climatic data at the building site. This numerical method is applied for several sequences of spells around a low-rise test building and the results are experimentally verified. It is shown that the numerical method can accurately estimate the spatial and temporal distribution of driving rain loads on building envelopes.

• wind driven rain

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. Spatial and temporal distribution of driving rain on a low-rise building
8. Spatial and temporal distribution of driving rain on buildings: numerical simulation and experimental verification
9. Validation of external BES-CFD coupling by inter-model comparison
10. Wind, rain and the building envelope: studies at the Laboratory of Building Physics, KULeuven
11. Wind-driven rain as a boundary condition for HAM simulations: Analysis of simplified modelling approaches  

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. Simulating non-isothermal water vapour transfer: an experimental validation on multi-layered building components
17. Spatial and temporal distribution of driving rain on a low-rise building
18. The influence of soil moisture in the unsaturated zone on the heat loss from buildings via the ground
19. Wind, rain and the building envelope: studies at the Laboratory of Building Physics, KULeuven
20. Wind-driven rain as a boundary condition for HAM simulations: Analysis of simplified modelling approaches