Forward, tangent linear, and adjoint runge-kutta methods in KPP–2.2

  • Authors:
  • Philipp Miehe;Adrian Sandu

  • Affiliations:
  • Department of Computer Science, Virginia Polytechnic Institute and State University, Blacksburg, VA;Department of Computer Science, Virginia Polytechnic Institute and State University, Blacksburg, VA

  • Venue:
  • ICCS'06 Proceedings of the 6th international conference on Computational Science - Volume Part III
  • Year:
  • 2006

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Abstract

This paper presents the new stiff solvers of the new version 2.2 of the Kinetic PreProcessor (KPP). Taking a set of chemical reactions and their rate coefficients as input, KPP generates Fortran90, Fortran77, Matlab, or C code for the temporal integration of the kinetic system. Efficiency is obtained by carefully exploiting the sparsity structures of the Jacobian and of the Hessian. A set of integration methods was added to the comprehensive suite of stiff numerical integrators. Moreover, KPP is now ready do be used to generate the tangent linear model, as well as the continuous and discrete adjoint models of the chemical system to do sensitivity analysis.