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Parallel 3-D Aerodynamic Shape Optimization on Unstructured Meshes

  • Lee, Sang-Wook (Department of Aerospace Engineering Korea Advanced Institute of Science and Technology) ;
  • Kwon, Oh-Joon (Department of Aerospace Engineering Korea Advanced Institute of Science and Technology)
  • 발행 : 2003.05.30

초록

A three-dimensional aerodynamic shape optimization technique in inviscid compressible flows is developed by using a parallel continuous adjoint formulation on unstructured meshes. A new surface mesh modification method is proposed to overcome difficulties related to patch-level remeshing for unstructured meshes, and the effect of design sections on aerodynamic shape optimization is examined. Applications are made to three-dimensional wave drag minimization problems including an ONERA M6 wing and the EGLIN wing-pylon-store configuration. The results show that the present method is robust and highly efficient for the shape optimization of aerodynamic configurations, independent of the number of design variables used.

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참고문헌

  1. jameson, A., "Aerodynamic Design via Control Theory," J. of Scientific Computing, Vol. 3, 1988, pp. 233-260. https://doi.org/10.1007/BF01061285
  2. Sangho Kim, Alonso, J. J., and Jameson, A., "Design Optimization of High- Lift Configurations Using a Viscous Continuous Adjoint Method," AIAA-2002-0844, 2002.
  3. Anderson, W. K. and Venkatakrishnan, V., "Aerodynamic Design Optimization in Unstructured Grids With a Continuous Adjoint Formulation," AlAA-97-0643, 1997.
  4. Baysal, o. and Ghayour, K., "Continuous Adjoint Sensitivities for Optimization With General Cost Functions on Unstructured Meshes," AlAA Journal, Vol. 39, No. 1, 2001, pp. 48-55.
  5. Arian, E. and Salas, M. D., "Admitting the Inadmissible : Adjoint Formulation for Incomplete Cost Functions in Aerodynamic Optimization,"AIAA Journal, Vol. 37, No. 1, 1999, pp. 37-44. https://doi.org/10.2514/2.690
  6. Frink, N. T., "Rescent Progress Toward a Three-Dimensional Unstructured Navier-Stokes Flow Solver," AIAA-94-0061, 1994.
  7. Chun-ho Sung and jang Hyuk Kwon, "Accurate Aerodynamic Sensitivity Analysis Using Adjoint Equations," AlAA Journal, Vol. 32, No.2, 2000, pp. 243-250.
  8. Sang Wook Lee and Oh loon Kwon, "Aerodynamic Shape Optimization Using a Continuous Adjoint Formulation on Unstructured Meshes," J. of KSAS, Vol. 30, No. 4, 2002, pp. 18-27.
  9. Sang Wook Lee and Oh joon Kwon, "Aerodynamic Shape Optimization by Using a Continuous Adjoint Method on Unstructured Meshes," Proceeding of JSASS 16th International Sessions in 40th Aircraft Symposium, Yokohama, Japan, 2002, pp. 95-98.
  10. Belegundu, A. D. and Chandruoatla, T. R., "Optimization Concepts and Applications in Engineering," ISBN 0-13-031279-7, 1999.
  11. Chun- ho, Sung and Jang Hyuk Kwon, "Efficient Aerodynamic Design Method Using a Tightly Coupled Algorithm," AIAA Journal, Vol. 40, No. 9, 2002, pp. 1839-1845. https://doi.org/10.2514/2.1861
  12. Karypis, G. and Kumar, V., "Multilevel k-way Partitioning Scheme for Irregular Graphs," J. of Parallel and Distributed Computing, Vol. 48, No.1, 1998, pp. 96-129. https://doi.org/10.1006/jpdc.1997.1404