CFD stands for Computational Fluid Dynamics (numerical fluid mechanics) and involves numerical methods for solving problems in this area.
A system of non-linear partial differential equations (see Navier-Stokes equations) that describe the flow field as a function of space and time is used for this purpose. These equations enable multi-dimensional numerical simulation of flows, whereby complex flow patterns can be calculated respective of their constraints.
See Fig. 1 Computational fluid dynamics
Applying CFD during the product development process offers great potential for improving the performance and efficiency of products and can noticeably shorten the product development time by reducing the need to perform experiments. Characteristic CFD results should be verified by experiments, however (evaluation).