Nitrogen dissociation rates in complex hypersonic flows

Graham V Candler, Joseph Olejniczak

Research output: Contribution to conferencePaperpeer-review


Current models for the dissociation rate and the vibration-dissociation coupling process are used to simulate several recent hypervelocity experiments. It is shown that all of the models accurately predict the shock standoff distance for a spherical, blunt-body flow. However, the computational results do not agree with a set of experiments that was designed to be sensitive to the chemical kinetics model. In these highly separated flows, the equilibrium dissociation rate must be increased or decreased by a factor of about four to obtain reasonable agreement with the data. This puts into doubt the accuracy of the reaction rate, or indicates that some other unknown thermo-chemical process occurs in these flows.

Original languageEnglish (US)
StatePublished - Jan 1 1997
Event32nd Thermophysics Conference, 1997 - Atlanta, United States
Duration: Jun 23 1997Jun 25 1997


Other32nd Thermophysics Conference, 1997
CountryUnited States

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