Applications of a Cartesian mesh boundary-layer approach for complex configurations

Michael J. Aftosmis, Marsha Berger, Juan J. Alonso

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper examines the performance of a coupled Euler boundary-layer approach in simulating viscous flows around a variety of aerospace configurations. The method combines an established multilevel Cartesian-mesh Euler solver with a transpiration boundary condition to account for the boundary-layer displacement thickness. This boundary condition is set via a strip-wise solution of the 2D boundary-layer equations which uses the inviscid solution as a driver. The implementation uses local flow topology to establish attachment and separation and an elliptic solve on the surface triangulation to couple surface transpiration velocities back to the inviscid solver. While interacting boundary-layer (IBL) approaches are not necessarily new, the current approach is strongly focused on complex configurations and the implementation includes some novel techniques for coping with geometric complexity, markedly improving its utility, and removing the need for additional viscous corrections. The use of IBL solvers is well established for transport aircraft configurations, and the current work examines the success of the technique for such cases and explores its utility outside this class of problems. The investigations demonstrate the technique's performance with both single-point and parametric studies on 2D supercritical airfoils, isolated wings, finned-missiles, and full-aircraft configurations. Results on the NACA RM-10 showed good agreement over a range of transonic and supersonic Mach numbers. Simulations on the DLR F-4 wing-body yielded aerodynamic force coefficients that agreed well with established results from the 1st AIAA Drag Prediction Workshop over a range of conditions. The discussion of these numerical results highlights regions of continued research.

Original languageEnglish (US)
Title of host publicationCollection of Technical Papers - 44th AIAA Aerospace Sciences Meeting
Pages7755-7773
Number of pages19
Volume11
StatePublished - 2006
Event44th AIAA Aerospace Sciences Meeting 2006 - Reno, NV, United States
Duration: Jan 9 2006Jan 12 2006

Other

Other44th AIAA Aerospace Sciences Meeting 2006
CountryUnited States
CityReno, NV
Period1/9/061/12/06

Fingerprint

mesh
boundary layers
Boundary layers
boundary layer
aircraft configurations
transpiration
configurations
Transpiration
wings
supercritical airfoils
transport aircraft
boundary conditions
aircraft
aerodynamic forces
boundary layer equations
boundary condition
transonic flow
Boundary conditions
missiles
triangulation

ASJC Scopus subject areas

  • Space and Planetary Science
  • Aerospace Engineering

Cite this

Aftosmis, M. J., Berger, M., & Alonso, J. J. (2006). Applications of a Cartesian mesh boundary-layer approach for complex configurations. In Collection of Technical Papers - 44th AIAA Aerospace Sciences Meeting (Vol. 11, pp. 7755-7773)

Applications of a Cartesian mesh boundary-layer approach for complex configurations. / Aftosmis, Michael J.; Berger, Marsha; Alonso, Juan J.

Collection of Technical Papers - 44th AIAA Aerospace Sciences Meeting. Vol. 11 2006. p. 7755-7773.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Aftosmis, MJ, Berger, M & Alonso, JJ 2006, Applications of a Cartesian mesh boundary-layer approach for complex configurations. in Collection of Technical Papers - 44th AIAA Aerospace Sciences Meeting. vol. 11, pp. 7755-7773, 44th AIAA Aerospace Sciences Meeting 2006, Reno, NV, United States, 1/9/06.
Aftosmis MJ, Berger M, Alonso JJ. Applications of a Cartesian mesh boundary-layer approach for complex configurations. In Collection of Technical Papers - 44th AIAA Aerospace Sciences Meeting. Vol. 11. 2006. p. 7755-7773
Aftosmis, Michael J. ; Berger, Marsha ; Alonso, Juan J. / Applications of a Cartesian mesh boundary-layer approach for complex configurations. Collection of Technical Papers - 44th AIAA Aerospace Sciences Meeting. Vol. 11 2006. pp. 7755-7773
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