Sensitivity analysis reveals how strongly, or weakly, a numerical solution depends on the values of certain parameters. Cosilab includes powerful graphical tools that -- on clicking a button -- display, for instance, the sensitivity of flamespeed or other combustion related quantities on important parameters such as the reaction-rate constants.
As a first example, the following figure shows a bar-chart of flamespeed sensitivities for a freely propagating, premixed flame computed with the GRI mechanism.
As a second example, the next figure shows sensitivity profiles of a freely propagating, premixed flame through the flame as functions of the physical distance variable for two reactions, namely reaction (3), O + H2 <=> H + OH, and reaction (2), O + H + M <=> OH + M.
As a last example, shown in the next figure is -- for the homogeneous ignition of a hydrogen-oxygen mixture -- the screenshot of the real-time display of the evolution of the temperature sensitivity as a function of time, namely for reactions (1) H + O2 + M <=> HO2 + M, (11) O + OH <=> O2 + H, and (12) O + H2 <=> OH + H.