@inbook{5637b7c0fcfc421488800896b12db5a9,
title = "Calibration of the Larsen-Borgnakke Model for NO-O Vibrational Relaxation",
abstract = "Modeling of Nitric Oxide (NO) vibrational states in hypersonic reentry flows is necessary to interpret emission and absorption spectra. To that end, the vibrational relaxation number, ZvC, is an important parameter in the Larsen-Borgnakke (LB) model which is used to express vibrational relaxation rates for collisions. In this work, we use rates obtained from Quasi-Classical Trajectory (QCT) calculations of Andrienko et al. [2] for the NO-O vibrational relaxation process to arrive at a new fit for the ZvC parameter. This new fit for ZvC is implemented in Direct Simulation Monte Carlo (DSMC) calculations for the case of hypersonic flow over a cylinder where the effect of the new fit on NO macroparameters and vibrational state populations is studied.",
keywords = "Larsen-Borgnakke, Nitric oxide infrared emission, Vibrational relaxation",
author = "Shubham Thirani and Levin, \{Deborah A.\} and Wysong, \{Ingrid J.\}",
note = "The research is supported by the Air Force Office of Scientific Research through AFOSR Grant No. FA9550-19-1-0342 and computational resources are provided by the National Science Foundation{\textquoteright}s ACCESS program with the project number TG-PHY210065. The authors are thankful to Dr. Daniil Andrienko and Alexander Fangman for providing the QCT rates for NO-O vibrational relaxation mechanisms. The authors are also thankful to Dr. Sergey F. Gimelshein for help with running the 0-D thermal relaxation bath cases in the DSMC solver.",
year = "2026",
doi = "10.1007/978-3-032-00094-1\_60",
language = "English (US)",
series = "Springer Aerospace Technology",
publisher = "Springer",
pages = "619--627",
booktitle = "Springer Aerospace Technology",
address = "Germany",
}