JAXA Repository / AIREX 未来へ続く、宙(そら)への英知
64228000.pdf2.4 MB
title感圧塗料計測法Self-Illumination補正プログラムの開発
Other TitleDevelopment of a self-illumination correction program for pressure-sensitive paint measurements
Author(jpn)口石, 茂; 栗田, 充; 満尾, 和徳; 藤井, 啓介
Author(eng)Kuchiishi, Shigeru; Kurita, Mitsuru; Mitsuo, Kazunori; Fujii, Keisuke
Author Affiliation(jpn)宇宙航空研究開発機構研究開発本部風洞技術開発センター; 宇宙航空研究開発機構研究開発本部風洞技術開発センター; 宇宙航空研究開発機構研究開発本部風洞技術開発センター; 宇宙航空研究開発機構研究開発本部風洞技術開発センター
Author Affiliation(eng)Wind Tunnel Technology Center, Aerospace Research and Development Directorate, Japan Aerospace Exploration Agency (JAXA); Wind Tunnel Technology Center, Aerospace Research and Development Directorate, Japan Aerospace Exploration Agency (JAXA); Wind Tunnel Technology Center, Aerospace Research and Development Directorate, Japan Aerospace Exploration Agency (JAXA); Wind Tunnel Technology Center, Aerospace Research and Development Directorate, Japan Aerospace Exploration Agency (JAXA)
Issue Date2008-12-26
PublisherJapan Aerospace Exploration Agency (JAXA)
宇宙航空研究開発機構
Publication titleJAXA research and development report
宇宙航空研究開発機構研究開発報告
VolumeJAXA-RR-08-002
Publication date2008-12-26
Languagejpn
eng
AbstractThis report presents a detailed description for the development of a computer program to correct self-illumination effects in pressure-sensitive paint measurements for use in the JAXA wind-tunnel testing. It has been found that the effects of reflected light in luminescent paint measurements can be corrected reasonably by applying techniques developed in the fields of radiative transfer and computer graphics, provided that the painted surface may be treated as a diffuse reflector. The implementation of the calculation of form factors that can handle occlusions between two surface elements is described in detail. Emphasis is placed on specific treatments that are needed to improve accuracy and minimize storage requirements. We first applied the technique to a calibration test for a simple saw-teeth model, and it was shown that the present program can sufficiently remove the measurement errors induced by the reflected light. The program was also applied to test data obtained in JAXA 6.5 m x 5.5 m low-speed wind tunnel using a semispan model with high-lift devices, and the corrected results as well as problems for the application of the present technique in industrial wind-tunnel tests are presented and discussed.
本報告は、JAXA風洞試験に供せられる、感圧塗料試験データのself-illumination効果を補正するプログラムの開発に関する詳細な記述である。発光性塗料の反射光の影響は、拡散反射を仮定すれば輻射解析およびコンピュータグラフィックスの分野において開発された手法によって妥当に補正可能であることが過去に示されている。陰面消去処理を含めたフォームファクタ計算手法の具体的な適用手順が、補正精度向上および記憶容量最小化のために必要な特別な取り扱いに重点を置いて述べられる。本手法はまず鋸歯形状模型に関する較正試験に適用され、測定誤差の一因となり得る反射光の影響を十分妥当に除去できることが示される。次に本プログラムをJAXA 6.5m×5.5m 低速風洞において実施された、高揚力装置標準模型試験データに適用し、補正結果の検討に加えて、実用風洞における本補正手法適用に関する問題点が議論される。
Description形態: カラー図版あり
Keywordspressure-sensitive paint, self-illumination correction, form factor, hidden surface removal
Document TypeTechnical Report
JAXA Category研究開発報告
ISSN1349-1113
NCIDAA1192675X
SHI-NOAA0064228000
Report NoJAXA-RR-08-002
URIhttps://repository.exst.jaxa.jp/dspace/handle/a-is/15821


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