A new simulation case's set-up and initial calibration is the most appropriate use for PERK mechanisms. They allow fast simulation turnaround time while maintaining accuracy in chemistry. They can also provide insights into the effects of variation in operating conditions and can speed up simulation-based design of experiments. Once initial results are obtained, we recommend switching the chemistry to a pre-reduced mechanism (see MFL Pre-Reduced Mechanisms) to confirm the results and obtain more detailed information, such as speciation or soot predictions.

PERK mechanisms can be optimized further for conditions of interest using the Global Mechanism Optimization facility in Ansys Chemkin Reaction Workbench. Refer to the mechanism reduction tutorial in the Reaction Workbench Tutorial Guide for an example of a mechanism optimization. The manual is available from the Ansys Help website at ansyshelp.ansys.com.