Comments (3)
Even using a second order centered difference results in huge swings in the velocity. Might need to fit a continuous function... Definitely need to investigate how CHEMKIN solves the ODEs with the volume specified.
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CHEMKIN uses the same methodology (basically) as Cantera in terms of the energy equation, where both a specific volume and a dv/dt term (i.e., velocity for constant area) appear. It is unclear how CHEMKIN-Pro processes the volume traces to give the proper pressure trace for all inputs (this VPRO functionality is not present in SENKIN/CHEMKIN-II)
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The problem is that the velocity between specified (t, V) points is interpolated. Instead, the velocity should be constant between two points. Thus, the simple first order forward difference is sufficient to match the P(t) from the experiment.
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Related Issues (20)
- Move mechanism conversion out of the SimulationCase
- Add documentation for supported keywords
- Port code to be compatible with Python 2
- Add examples of more complicated uses (TTIM, VTIM) to the online docs
- Temperature profiles are not applied to the reactor HOT 3
- Update all documentation for 1.1 release
- Add ability to specify pressure profile through volume profile HOT 2
- Add ability to process multiple input cases in serial/parallel HOT 1
- Add unit tests
- Strange behavior when too many products are specified for eq. Ratio and multi HOT 3
- Move documentation out of main code branch
- Add setup.py to install to site-packages
- Use an exception class instead of sys.exit()
- Decide if its possible to break the simulation when ignition happens with derivative HOT 4
- Update documentation for the location of executables
- Store CTI file with the HDF output HOT 1
- Switch to h5py for HDF5 output? HOT 6
- Inconsistent definitions for velocity profiles HOT 10
- Package for Conda? HOT 5
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