Parallelization of ANDEE Using the UGL1B MPI Interface Library

摘要

Hybrid parallelization has been enabled for the AFRL hypersonic non-equilibrium flow code ANDEE through the use of the MPI Interface library, UGLIB, and OpenMP directives. ANDEE solves the Navier-Stokes equations with source terms for a reacting multi-species air mixture. The source terms consist of (a) rate of change of species concentration, and (b) energy exchanges between the state-to-state (STS) vibrational quantum energy and the translational energy modes of the select air species. The focus of the study is on the more computationally intensive STS exchanges that account for over 95% of the total CPU time. The speedup results are presented for sample cases with different numbers of quantum energy states. A parallel efficiency greater than 90% was achieved for total chemistry calculations with 10 quantum levels.