Computational economy improvements in PRISM

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Description

The PRISM piecewise solution mapping procedure, in which the solution of the chemical kinetic ODE system is parameterized with quadratic polynomials, is applied to CFD simulations of H{sub 2}+air combustion. Initial cost of polynomial construction is expensive, but it is recouped as the polynomial is reused. We present two methods that help us to parameterize only in places that will ultimately have high reuse. We also implement non-orthogonal Gosset factorial designs, that reduce polynomial construction costs by a factor of two over previously used orthogonal factorial designs.

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6 pages

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Tonse, Shaheen R. & Brown, Nancy J. January 29, 2003.

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Description

The PRISM piecewise solution mapping procedure, in which the solution of the chemical kinetic ODE system is parameterized with quadratic polynomials, is applied to CFD simulations of H{sub 2}+air combustion. Initial cost of polynomial construction is expensive, but it is recouped as the polynomial is reused. We present two methods that help us to parameterize only in places that will ultimately have high reuse. We also implement non-orthogonal Gosset factorial designs, that reduce polynomial construction costs by a factor of two over previously used orthogonal factorial designs.

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6 pages

Notes

OSTI as DE00823936

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  • Third Joint Meeting of the U.S. Sections of the Combustion Institute, Chicago, IL (US), 03/16/2003--03/19/2003

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  • Report No.: LBNL--52401
  • Grant Number: AC03-76SF00098
  • Office of Scientific & Technical Information Report Number: 823936
  • Archival Resource Key: ark:/67531/metadc781922

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Office of Scientific & Technical Information Technical Reports

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  • January 29, 2003

Added to The UNT Digital Library

  • Dec. 3, 2015, 9:30 a.m.

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  • April 4, 2016, 12:31 p.m.

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Tonse, Shaheen R. & Brown, Nancy J. Computational economy improvements in PRISM, article, January 29, 2003; Berkeley, California. (digital.library.unt.edu/ark:/67531/metadc781922/: accessed June 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.