The scientific work of the VFE-2 facet of the RTO AVT-113 Task Group has been carried out from 2003 to 2007, and the achieved status of knowledge has been documented in a large number of papers [3.1 – 3.41]. Many aspects of vortical flow could be treated successfully, but on the other hand some problems are still unsolved. Therefore, at the end of the RTO-phase of VFE-2 in 2008 the scientific program is not terminated. As with VFE-1, the scientific work will continue in the next decade: Many problems have not been solved completely or have even been started, and others have not yet been looked at within the framework of the RTO Task Group. Therefore new experiments will be carried out worldwide in a new open phase of VFE-2. The configuration under consideration is relatively simple and described analytically, and therefore new wind tunnel models can be built quite easily. Numerical calculations will go on as well, and better results as well as new solutions will be achieved.
The results achieved so far in phase 1 of VFE-2 are collected in the RTO AVT-113 Final Report [3.42]. They will be the starting point for future investigations. In the resuming Chapter 35 of the Final Report the achievements as well as the unsolved problems have been summarized. On this basis an outlook for the next needs of further investigations is given subsequently.
On the experimental side the needs are
On the numerical side the needs are