The postgraduate students will get acquainted with process simulations and computer-aided design computations. They will enhance their knowledge of balancing in complex systems including multiphase, reactive or transient processes. The course includes classification of mathematical modelling approaches for chemical systems, namely mass transfer, heat transfer, fluid flow and reacting systems. Attention is given also to numerical methods for the solution of model equations and description of time domain dynamics. Students will get an overview of optimization techniques for process systems. Error propagation and data regression are covered as important concepts in the treatment of experimental data.