It is well recognised that the accuracy of numerical solutions for coupled heat and moisture transport problems are highly dependent upon the space discretization regime adopted. While a range of possible space discretization methods are outlined in the literature, most of the commonly available simulation models for heat and moisture transfer through building constructions adopt the one-way expansion method. As part of the process of developing a new simulation model based on the Control Volume technique, the Authors have conducted a range of computer simulations to study the influence of space discretization on modelling results. Comparisons between different space discretization methods are presented which show that the two-way expansion method generally produces the best solution. This method has now been adopted by the Authors and has the advantage of avoiding the need to use extremely fine grids even when modelling complex building structures.

• HAM: simplified models - simplification

1. Evaluation of discretized transport properties for numerical modelling of heat and moisture transfer in building structures
2. Moisture permeability data presented as a mathematical relationship
3. Non-contact methods of measuring moisture concentration in external layers of building partitions. I--The influence of geometrical microstructure on the kinetics of moisture condensation on glass surfaces
4. Nonisothermal moisture diffusion in porous building materials
5. The application of X-ray absorption to building moisture transport studies
6. The determination of vapour and liquid transport coefficients as input to combined heat mass transfer models
7. The effect of temperature on the moisture permeability of building materials
8. The selection of appropriate flow potentials for moisture transport models
9. The use of differential permeabilty in moisture transport modelling  

1. Effects of damp and mould in the home on respiratory health: a review of the literature
2. Evaluation of discretized transport properties for numerical modelling of heat and moisture transfer in building structures
3. Web-based integrated project control system  

1. The application of X-ray absorption to building moisture transport studies