Parametric free-form shape design with PDE models and reduced basis method

• Published in: Computer Methods in Applied Mechanics and Engineering (ISSN: 0045-7825), vol. 199, num. 23-24, p. 1583-1592
• Elsevier, 2010

We present a coupling of the reduced basis methods and free-form deformations for shape optimization and design of systems modelled by elliptic PDEs. The free-form deformations give a parameterization of the shape that is independent of the mesh, the initial geometry, and the underlying PDE model. The resulting parametric PDEs are solved by reduced basis methods. An important role in our implementation is played by the recently proposed empirical interpolation method, which allows approximating the non-affinely parameterized deformations with affinely parameterized ones. These ingredients together give rise to an efficient online computational procedure for a repeated evaluation design environment like the one for shape optimization. The proposed approach is demonstrated on an airfoil inverse design problem.

Note: EPFL MATHICSE report 01.2010

Keywords: reduced basis methods ; free-form deformations ; empirical interpolation ; engineering design ; shape optimization

Reference

• EPFL-ARTICLE-143436
• doi:10.1016/j.cma.2010.01.007
• View record in Web of Science

Record created on 2010-01-18, modified on 2012-03-21