CRPC-TR98741						February 1998

Title: Preliminary Results from the Application of Automatic Adjoint Code
Generation to CFL3D

Authors: Alan Carle, Mike Fagan, and Lawrence L. Green

Submitted February 1998; Submitted to the 7th AIAA/USAF/NASA/ISSMO
Multidisciplinary Analysis and Optimization Symposium

Abstract:
We describe ADJIFOR, an automated adjoint code generator for Fortran, and
present preliminary results from the application of ADJIFOR to augment the
CFL3D flow solver. Bsed on these initial results with CFL3D, we argue
that, even in its infancy, ADJIFOR can deliver derivatives accurately and
efficiently for use in aerodynamic shape optimization problems with 200 to
500 independent design variables.

Keywords: ADIFOR, ADJIFOR, Adjoint code generation, Automatic
differentiation, CFL3D

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Alan Carle		Mike Fagan
carle@cs.rice.edu	mfagan@cs.rice.edu
Center for Research on Parallel Computation
Rice University

Lawrence L. Green
l.l.green@larc.nasa.gov
NASA Langley Research Center