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ChemGen: Code Generation for Multispecies Chemical Kinetics in Computational Physics Simulations
Ryan F. Johnson, Eric J. Ching, Ethan S. Genter, Joshua E. Lipman, Andrew D. Kercher, Jay Arcities, Hai Wang
https://arxiv.org/abs/2510.10005

ChemGen: Code Generation for Multispecies Chemical Kinetics in Computational Physics Simulations
This paper introduces ChemGen, a software package that uses code generation to integrate multispecies thermodynamics and chemical kinetics into C+-based computational physics codes. ChemGen aims to make chemical kinetics more accessible in existing simulation frameworks and help bridge the gap between combustion modeling and computational physics. The package employs the concept of decorators which enable flexible C++ code generation to target established software ecosystems. ChemGen generates …