Numerical simulation of 3-D flow around sounding rocket in the lower thermosphere
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...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2006-03-01
|
| Series: | Annales Geophysicae |
| Online Access: | https://www.ann-geophys.net/24/89/2006/angeo-24-89-2006.pdf |
| _version_ | 1818082769568268288 |
|---|---|
| author | J. Kurihara K.-I. Oyama N. Iwagami T. Takahashi |
| author_facet | J. Kurihara K.-I. Oyama N. Iwagami T. Takahashi |
| author_sort | J. Kurihara |
| collection | DOAJ |
| description | 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
N<sub>2</sub> 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. |
| first_indexed | 2024-12-10T19:27:22Z |
| format | Article |
| id | doaj.art-cd05ec8bced64d379d28704135c3c802 |
| institution | Directory Open Access Journal |
| issn | 0992-7689 1432-0576 |
| language | English |
| last_indexed | 2024-12-10T19:27:22Z |
| publishDate | 2006-03-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Annales Geophysicae |
| spelling | doaj.art-cd05ec8bced64d379d28704135c3c8022022-12-22T01:36:20ZengCopernicus PublicationsAnnales Geophysicae0992-76891432-05762006-03-0124899510.5194/angeo-24-89-2006Numerical simulation of 3-D flow around sounding rocket in the lower thermosphereJ. Kurihara0K.-I. Oyama1N. Iwagami2T. Takahashi3Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, Kanagawa 229-8510, JapanInstitute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, Kanagawa 229-8510, JapanDept. of Earth and Planetary Science, Graduate School of Science, University of Tokyo, Bunkyo-ku, Tokyo 113-0033, JapanInformation Science Laboratory, Tokai University, Hiratsuka, Kanagawa 259-1292, JapanNumerical 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 N<sub>2</sub> 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.https://www.ann-geophys.net/24/89/2006/angeo-24-89-2006.pdf |
| spellingShingle | J. Kurihara K.-I. Oyama N. Iwagami T. Takahashi Numerical simulation of 3-D flow around sounding rocket in the lower thermosphere Annales Geophysicae |
| title | Numerical simulation of 3-D flow around sounding rocket in the lower thermosphere |
| title_full | Numerical simulation of 3-D flow around sounding rocket in the lower thermosphere |
| title_fullStr | Numerical simulation of 3-D flow around sounding rocket in the lower thermosphere |
| title_full_unstemmed | Numerical simulation of 3-D flow around sounding rocket in the lower thermosphere |
| title_short | Numerical simulation of 3-D flow around sounding rocket in the lower thermosphere |
| title_sort | numerical simulation of 3 d flow around sounding rocket in the lower thermosphere |
| url | https://www.ann-geophys.net/24/89/2006/angeo-24-89-2006.pdf |
| work_keys_str_mv | AT jkurihara numericalsimulationof3dflowaroundsoundingrocketinthelowerthermosphere AT kioyama numericalsimulationof3dflowaroundsoundingrocketinthelowerthermosphere AT niwagami numericalsimulationof3dflowaroundsoundingrocketinthelowerthermosphere AT ttakahashi numericalsimulationof3dflowaroundsoundingrocketinthelowerthermosphere |