... Wesselingh, J.A., The Maxwell – Stefan approach to mass transfer, Chemical Engineering Science, 52, (1997), 861 – 911 [5] Levenspiel, O., Modeling in chemical engineering, Chemical Engineering ... geometry as shown in Figure 3. This model discusses the drying of sludge material and linked to an earlier work presented by Jamaleddine and Mass Transfer in Chemical Engineering Processes 100 ... nodal points marking the boundaries of each cell and combining the physical domain into one computational entity. It is a common practice to check and test the quality of the mesh in the model...