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:

• TAKEDA, Chikashi
• OHTA, Yuji
• ISHIMA, Tsuneaki
• ISHII, Kiyoshi
• OBOKATA, Tomio

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