To obtain an impression of results of computational fluid dynamics, simulated velocity fields have to be visualized adequately. In cooperation with delta h Ingenieurgesellschaft mbH the software STRING is developed. It enables an intuitive visualization of steady-state and transient three-dimensional velocity fields on plane and curved surfaces with the help of Pathlets. The three-dimensional data can be displayed in horizontal as well as vertical cutting planes.
Pathlets are comet-like shapes whose length correlates with the local velocity and whose position is given by a short part of a trajectory. Due to an equidistribution of the Pathlets in the domain and the movement of the streamlets with the fluid flow a natural visualization is achieved.