LDV Measurements of Axial Distributions of In-Cylinder Gas Velocities
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- KIDO Hiroyuki
- Faculty of Engineering, Kyushu University
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- TAJIMA Hiroshi
- Faculty of Engineering, Kyushu University
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- MATSUMOTO Akihiko
- Faculty of Engineering, Kyushu University
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Characteristics of in-cylinder gas flow in a two-cycle uniflow-type engine were investigated by using laser doppler velocimetry (LDV). Through swirl velocity measurements at several sections along the cylinder axis, it was found that in the early compression stroke, axial distribution of angular momentum is uneven and swirl velocity at each measuring section fluctuates periodically. Mean angular momentum in the whole of the combustion chamber, however, decays monotonously and analysis showed that its decaying process after a late compression stroke is similar to the swirl-decaying process in a cylindrical constant-volume bomb. A secondary airflow in the upper part of the combustion chamber is inferred from the measured radial and axial velocities in an early compression stroke.
収録刊行物
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- JSME international journal. Ser. 2, Fluids engineering, heat transfer, power, combustion, thermophysical properties
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JSME international journal. Ser. 2, Fluids engineering, heat transfer, power, combustion, thermophysical properties 32 (1), 78-84, 1989-02-15
一般社団法人日本機械学会
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詳細情報
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- CRID
- 1570572702200511232
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- NII論文ID
- 110002494238
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- NII書誌ID
- AA10680596
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- ISSN
- 09148817
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- 本文言語コード
- en
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- データソース種別
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- CiNii Articles