OpenCSM: An open-source constructive solid modeler for MDAO

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

17 Scopus citations

Abstract

The advent of Multi-Disciplinary Analysis and Optimization environments (MDAO) has put increased emphasis on the automatic generation of configuration boundary representations directly from a feature tree (build recipe) and a set of externally-driven parameters. Many commercial computer-aided design systems exist to satisfy this need, but all currently suffer for several limitations: the build recipe is encoded in files with proprietary formats that are hard to generate and/or modify externally; the primitives are pre-defined and it is very difficult to create fully-parametric user-defined primitives; the build process is not explicitly "differentiated", thus making the gradients required by optimizers available only via finite differences; and, the systems are licensed in such a ways that distributed, simultaneous execution on many computers can be cost prohibitive. Described here is an open-source constructive solid modeler, named OpenCSM, that has been developed to circumvent these limitations. OpenCSM, which is built upon the OpenCASCADE geometry kernel and the EGADS geometry generation system, is freely available on virtually any computing system. The use of OpenCSM as part of NASA's OpenMDAO optimization system and as the basis for automatic overset grid generation is demonstrated.

Original languageEnglish (US)
Title of host publication51st AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition 2013
StatePublished - Aug 19 2013
Event51st AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition 2013 - Grapevine, TX, United States
Duration: Jan 7 2013Jan 10 2013

Publication series

Name51st AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition 2013

Other

Other51st AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition 2013
CountryUnited States
CityGrapevine, TX
Period1/7/131/10/13

ASJC Scopus subject areas

  • Space and Planetary Science
  • Aerospace Engineering

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    Dannenhoffer, J. F. (2013). OpenCSM: An open-source constructive solid modeler for MDAO. In 51st AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition 2013 (51st AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition 2013).