The purpose of mathematical modelling is to describe the essential features of a phenomenon or a system in a manner which allows the use of various mathematical methods for a deeper analysis. This makes it possible to study for instance the time development of the system or the effect of changing the system parameters.

To formulate a mathematical model can be a challenging task. It requires both a solid understanding of the basic interactions governing the system under study and a good knowledge of mathematical methods. Most of the customers of CSC either use established mathematical models or develop new ones. Often the solution of the models is possible only through computer simulations or numerical methods.