Computation and experiment of nonequilibrium nozzle flow of arc-heated air

Ken Ichi Abe, Tsuyoshi Kameyama, Hisashi Kihara, Michio Nishida, Katsuhiro Ito, Hideyuki Tanno

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)


Numerical simulations of a nonequilibrium nozzle flow of arc-heated air were carried out using an eight-temperature model composed of translational, N2-rotational, O2-rotational, NO-rotational, N 2-vibrational, O2-vibrational, NO-vibrational, and electron temperatures. The on-axis profile of each temperature in the nozzle is shown and the thermal characteristics of the nozzle flow are discussed. Measurements of NO emission spectra were also made at wavelengths 220-265 nm at the nozzle exit to determine NO rotational temperature by a curve-fitting method. Computed rotational temperature of NO at the nozzle exit was compared with the experimental temperature to discuss the nozzle flow model introduced to the present numerical analysis. Moreover, the present computation was applied to a nozzle flow in another arcjet facility. The comparison between the computed NO rotational temperature and the experimental temperature showed reasonable agreement.

Original languageEnglish
Pages (from-to)428-434
Number of pages7
JournalJournal of Thermophysics and Heat Transfer
Issue number4
Publication statusPublished - 2005

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Aerospace Engineering
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes
  • Space and Planetary Science


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