The postgraduate students will get acquainted with process simulations and computer-aided design of processes and equipment. The course includes classification of mathematical modelling approaches for systems with mass and heat transfer, fluid flow, and chemical reactions. The students will enhance their knowledge of balance computations and simulations of complex systems including multiphase, reactive, or transient processes. Furthermore, attention will be paid to numerical methods for the solution of systems of equations. Optimisation techniques for process systems will also be discussed together with error propagation and regression analysis.