From charlesreid1

The Stack class in Python, which is a shadow class of Sim1D in C++ interface.

The Stack class is a container for one-dimensional domains. It manages how the set of one-dimensional domains is solved, how they are stored, how they communicate, etc.

C++:

src_2.0.2/include/cantera/oneD/StFlow.h
src_2.0.2/src/oneD/StFlow.cpp