Two layers mesh sensitivity of the convective drying model
The drying process is very time consuming as it corresponds to various evolutions of parameters during the process. Furthermore drying is always associated with the cracks and leakages defects, especially in ceramic fields. Due to the limitation in empirical ability to see the varieties of dynamic critical variables during drying, modelling and simulation seems to be the best option to explore these nonlinear transient variables. The ability of the mathematical model to produce reliable and coherent results depend on various configurations especially the meshes used. Hence, this paper focuses on the mesh sensitivity study and was performed on the proposed mathematical model. The governing system of non-linear partial differential equations is derived from mass and heat conservation laws that employed to the finite element method in two dimensional. The meshing sensitivity results show coarse meshing for a domain is adequate for all case studies with only less than l% differential when compared to fine meshing. Hence, the usage of coarse meshing is adequate in current mathematical model and can be used to facilitate experimental testing and to explain the underlying dynamic physical mechanisms during actual drying conditions.