Improvement of Physical Modeling for Vortex-Dominated Flows
Abstract
Due to significant enhancements in Computational Fluid Dynamics (CFD), numerical simulation has found its way into the design process of both civil and military aircraft, especially for nominal cruise performance where flows are generally characterized by attached flows. Military vehicles, however, routinely operate well outside of the steady, attached flow regimes and major effort has to be devoted to ensure the vehicle qualified at many states that contain unsteady, highly separated flows. State-of-the-art CFD methods lack the ability to predict onset and progression of separated vortex-dominated flows especially from smooth surfaces. Investigations carried out in several AVT task groups of the NATO Science and Technology Organization (STO) indicate that the shortcomings for these predictions mainly stem from continued deficiencies of the models of turbulence and transition.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jul 24, 2019
- Source ID
- FA95501817019
Entities
People
- Andreas Krumbein
Organizations
- Air Force Office of Scientific Research
- German Aerospace Center
- United States Air Force