Coupled simulation of heat and moisture transport in air and porous materials for the assessment of moisture related damage

Sensitivity analysis of CFD coupled non-isothermal heat and moisture modelling

“…The grid was dense near the air material interface and gradually coarsened towards the bottom of the porous material and the centre of the duct. The grid dependency was investigated by using Richardson extrapolation [12]. The original grid was refined with a factor 2 and a factor 4 for both the X and Y direction and the mass flow through the interface was calculated.…”

“…The same case was used by Steeman et al [12] to validate the coupled CFD-HAM model. The case is based on an experimental setup discussed in detail by Talukdar et al [18].…”

“…These models need a lot of material property data as input which introduce uncertainty to the model outcome. Therefore an elaborate sensitivity analysis is performed on a recently developed coupled CFD-HAM model [12]. The first part of this paper gives a brief description of the model.…”

“…Therefore a new model was added to an existing CFD package (Fluent ® ). This model is discussed more detailed in Steeman et al [12]. In this paper only a short overview of the modelling approach is given.…”

“…For example microclimates can occur near artefacts. A detailed study of these microclimates is necessary for the assessment of damage risks [11,12]. Most BES programs are typically multizone models: they represent a room as one node and have the assumption that state variables (e.g.…”