Numerical simulation of 3-D flow around sounding rocket in the lower thermosphere

J. Kurihara, Oyama Koichiro, N. Iwagami, T. Takahashi

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Numerical simulations using the Direct Simulation Monte Carlo (DSMC) method are known to be useful for analyses of aerodynamic effects on in-situ rocket measurements in the lower thermosphere, but the DSMC analysis of a spin modulation caused by an asymmetric flow around the rocket spin axis has been restricted to the two-dimensional and axially symmetric simulations in actual sounding rocket experiments. This study provides a quantitative analysis of the spin modulation using a three-dimensional (3-D) simulation of the asymmetric flow with the DSMC method. Clear spin modulations in the lower thermospheric N2 density measurement by a rocket-borne instrument are simulated using the rocket attitude and velocity, the simplified payload structure, and the approximated atmospheric conditions. Comparison between the observed and simulated spin modulations show a very good agreement within 5% at around 100km. The results of the simulation are used to correct the spin modulations and derive the absolute densities in the background atmosphere.

Original languageEnglish
Pages (from-to)89-95
Number of pages7
JournalAnnales Geophysicae
Volume24
Issue number1
DOIs
Publication statusPublished - 2006 Jan 1

Fingerprint

sounding rockets
thermosphere
modulation
simulation
rockets
rocket-borne instruments
Monte Carlo method
Monte Carlo analysis
meteorology
payloads
aerodynamics
in situ measurement
quantitative analysis
atmospheres
atmosphere

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Geology
  • Atmospheric Science
  • Earth and Planetary Sciences (miscellaneous)
  • Space and Planetary Science

Cite this

Kurihara, J. ; Koichiro, Oyama ; Iwagami, N. ; Takahashi, T. / Numerical simulation of 3-D flow around sounding rocket in the lower thermosphere. In: Annales Geophysicae. 2006 ; Vol. 24, No. 1. pp. 89-95.
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Numerical simulation of 3-D flow around sounding rocket in the lower thermosphere. / Kurihara, J.; Koichiro, Oyama; Iwagami, N.; Takahashi, T.

In: Annales Geophysicae, Vol. 24, No. 1, 01.01.2006, p. 89-95.

Research output: Contribution to journalArticle

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