A high-order computational method for the highly unsteady, complex vortical flows over delta wings is presented. A sixth-order compact difference scheme with an eighth-order low pass filter is used to solve the Navier-Stokes equations. Two approaches to turbulence modeling are investigated. The first scheme is an implicit LES (ILES) method which exploits the high-order accuracy of the compact difference scheme and uses the discriminating higher-order filter to regularize the flow. The second approach is a new hybrid RANS/ILES method which employs a standard k–ε model in regions where the grid resolution is unable to capture the turbulent behavior, and transitions to the ILES method in the vortical flow region where large scale turbulent structures are resolved. Computational simulations have been performed for a 50° sweep delta wing at 15° angle of attack and a moderate Reynolds number, Re = 2 × 106. Solutions employing the two turbulence models are evaluated on a baseline grid. A fine mesh computation has been performed for the ILES approach to investigate the impact of mesh resolution on this scheme. Computed results are also compared with the limited experimental measurements available. Computations exploring the control of the vortical flows above a swept delta wing by use of a dialectric-barrier-discharge actuator are also presented. With the actuator located near the apex, significant movement of the vortex breakdown location and a dramatic transformation of the shear-layer sub-structures are demonstrated.
Skip Nav Destination
ASME 2006 2nd Joint U.S.-European Fluids Engineering Summer Meeting Collocated With the 14th International Conference on Nuclear Engineering
July 17–20, 2006
Miami, Florida, USA
Conference Sponsors:
- Fluids Engineering Division
ISBN:
0-7918-4750-0
PROCEEDINGS PAPER
High-Order Computational Techniques for Unsteady Vortical Flows Over Delta Wings Available to Purchase
Raymond E. Gordnier,
Raymond E. Gordnier
Air Force Research Laboratory, Wright-Patterson AFB, OH
Search for other works by this author on:
Miguel R. Visbal
Miguel R. Visbal
Air Force Research Laboratory, Wright-Patterson AFB, OH
Search for other works by this author on:
Raymond E. Gordnier
Air Force Research Laboratory, Wright-Patterson AFB, OH
Miguel R. Visbal
Air Force Research Laboratory, Wright-Patterson AFB, OH
Paper No:
FEDSM2006-98559, pp. 1357-1379; 23 pages
Published Online:
September 5, 2008
Citation
Gordnier, RE, & Visbal, MR. "High-Order Computational Techniques for Unsteady Vortical Flows Over Delta Wings." Proceedings of the ASME 2006 2nd Joint U.S.-European Fluids Engineering Summer Meeting Collocated With the 14th International Conference on Nuclear Engineering. Volume 1: Symposia, Parts A and B. Miami, Florida, USA. July 17–20, 2006. pp. 1357-1379. ASME. https://doi.org/10.1115/FEDSM2006-98559
Download citation file:
7
Views
Related Proceedings Papers
Related Articles
Partially-Averaged Navier-Stokes Model for Turbulence: A Reynolds-Averaged Navier-Stokes to Direct Numerical Simulation Bridging Method
J. Appl. Mech (May,2006)
The Approximate Deconvolution Model for Large-Eddy Simulation of Compressible Flows With Finite Volume Schemes
J. Fluids Eng (March,2003)
The Approximate Deconvolution Model for Large-Eddy Simulation of Compressible Flows With Finite Volume Schemes
J. Fluids Eng (December,2002)
Related Chapters
Cavitating Structures at Inception in Turbulent Shear Flow
Proceedings of the 10th International Symposium on Cavitation (CAV2018)
Multiple Smoothing and Morphological Techniques in Radiographic Image Enhancement
International Conference on Computer Engineering and Technology, 3rd (ICCET 2011)
A Novel Approach for LFC and AVR of an Autonomous Power Generating System
International Conference on Mechanical Engineering and Technology (ICMET-London 2011)