| Item type |
テクニカルレポート / Technical Report(1) |
| 公開日 |
2015-03-26 |
| タイトル |
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タイトル |
前方向散乱光強度パターンの測定による噴霧粒径分布の決定 |
| 言語 |
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言語 |
jpn |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_18gh |
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資源タイプ |
technical report |
| その他のタイトル（英） |
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その他のタイトル |
Determination of Particle Size Distribution of Fuel Clouds by the Measurement of Forward Scattered-Light Intensity Profiles. |
| 著者 |
林, 茂
斉藤, 隆
堀内, 正司
山田, 秀志
回木, 敦
HAYASHI, Shigeru
SAITO, Takashi
HORIUCHI, Shoji
YAMADA, Hideshi
MEGURIKI, Atsushi
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| 著者所属 |
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航空宇宙技術研究所航空機公害研究グループ |
| 著者所属 |
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航空宇宙技術研究所航空機公害研究グループ |
| 著者所属 |
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航空宇宙技術研究所航空機公害研究グループ |
| 著者所属 |
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航空宇宙技術研究所航空機公害研究グループ |
| 著者所属 |
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芝浦工業大学 |
| 著者所属（英） |
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en |
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National Aerospace Laboratory(NAL) |
| 著者所属（英） |
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en |
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National Aerospace Laboratory(NAL) |
| 著者所属（英） |
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en |
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National Aerospace Laboratory(NAL) |
| 著者所属（英） |
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en |
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National Aerospace Laboratory(NAL) |
| 著者所属（英） |
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en |
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Shibaura Institute of Technology |
| 出版者 |
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出版者 |
航空宇宙技術研究所 |
| 出版者（英） |
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出版者 |
National Aerospace Laboratory(NAL) |
| 書誌情報 |
航空宇宙技術研究所報告
en : Technical Report of National Aerospace Laboratory TR-614
巻 614,
p. 20,
発行日 1980-06
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| 抄録（英） |
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内容記述タイプ |
Other |
|
内容記述 |
An optical determination of droplet size distributions of fuel sprays is assessed. The method described is based on the angular variation of scattered-light intensity in the forward lobe. Three inversion methods have been evaluated: Method I makes use of an inversion formula for the integral equation that correlates the distribution function of sprays to the observed scattered-light intensity profiles, I(θ), through the diffraction theory; Methods II and III are based on the least-square approximation of the observed I(θ)θ profiles, the former using a distribution function having two shape parameters, W(D)=CDx1exp(-x2 D), and the latter an unknown “smooth”distribution of finite of freedom. The validity of these inversions is tested with the I(θ)θ or I(θ) profiles theoretically predicted for pseudo sprays having various distribution, and the I(θ)θ profile that has been measured for a dispersion of glass spheres. The applicability of Method I is, in many cases, limited to sprays consisting of rather small droplets (up to about 50 μm for He-Ne beams), since evaluation of the ∂/∂θ(I(θ)θ3)term appearing in the inversion formula becomes erroneous at the larger angles. Method II gives fairly good estimates of Sauter Mean Diameter(SMD) for sprays that one should encounter in practice, even if the type of distribution is not known precisely. Method III is applicable for sprays whose type of distribution is not clarified in advance. The use of the Diffraction theory in place of rigorous Mie theory in the inversions is justified for droplet sizes 30 times larger than the wave length, as is often the case with sprays produced by conventional pressure atomizers, airblast and air-assist atomizers. Some of the merits of using the I(θ)θ profiles instead of the I(θ) profiles are discussed. |
| ISSN |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
0389-4010 |
| 資料番号 |
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内容記述タイプ |
Other |
|
内容記述 |
資料番号: NALTR0614000 |
| レポート番号 |
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内容記述タイプ |
Other |
|
内容記述 |
レポート番号: NAL TR-614 |
naltr00614.pdf (1.2 MB)
