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Measurement of Axial Flow Velocity in Cylinder of Reciprocating Engine by Single Incidence-Beam Reference-Mode LDA
- フォーマット:
- 論文
- 責任表示:
- TAKEDA, Chikashi ; OHTA, Yuji ; ISHIMA, Tsuneaki ; ISHII, Kiyoshi ; OBOKATA, Tomio
- 言語:
- 英語
- 出版情報:
- 社団法人日本機械学会, 1997-08-15
- 著者名:
- 掲載情報:
- JSME international journal. Ser. B, Fluids and thermal engineering
- ISSN:
- 13408054
- 巻:
- 40
- 通号:
- 3
- 開始ページ:
- 494
- 終了ページ:
- 500
- バージョン:
- VoR
- 概要:
- application/pdf<br />Journal Article<br />In order to measure flow velocity in the swirl and radial directions of a cylinder of an engine in practical use by means of a laser Doppler anemometer(LDA)through a small measuring window on the cylinder head, a back scattering fringe mode LDA is used. This LDA, however, can not be used to measure the velocity component in the axial direction of the cylinder. A single incidence-beam reference-mode LDA … is developed to measure the velocity component along the optical axis of the LDA and is applied to measure the fluctuating flow velocity in the axial direction of the cylinder. Ensemble-averaged mean velocity and fluctuation intensity of the velocity as measured using the LDA show good agreement with those measured using the conventional fringe-mode LDA. Based on these results, it can be concluded that the reference-mode LDA is applicable to measurements of the flow velocity in the axial direction of the cylinder through the amall window on the cylinder head. 続きを見る
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