Axial Mass Transport by Reciprocating Flow in Branching Tube Network. Gas Exchange Mechanism in Conducting Airways of Human Lung.
Bibliographic Information
- Other Title
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- 分岐管ネットワークにおける往復流による管軸方向物質輸送 ヒトの肺の誘導気道におけるガス交換機構
- ブンキカン ネットワーク ニ オケル オウフクリュウ ニ ヨル カンジク ホウコウ ブッシツ ユソウ ヒト ノ ハイ ノ ユウドウ キドウ ニ オケル ガス コウカン キコウ
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Abstract
Flow visualization in reciprocating flow inside a three-generation branching-tube network was performed to investigate the mechanism of axial gas exchange in conducting airways of human lung system. Water was used as the working fluid and nondiffusing dye was employed as tracer. The ranges of Reynolds and Womersley numbers at the 0-th generation tube were 60-6000 and 5-25, respectively. It was revealed that bi-directional axial gas-exchange phenomenon occurring in the conductive airways of human lung system was governed by "trap-and-release" mechanism caused by the formation-and-destruction of the separation regions. In inspiration process, separation regions were formed on the outside wall of the two daughter tubes, while they were generated on both (1) the outside wall of the parent tube and (2) the intersection circumference of the two different diameter tubes, or parent and daughter tubes.
Journal
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- TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B
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TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B 68 (667), 831-838, 2002
The Japan Society of Mechanical Engineers
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Details 詳細情報について
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- CRID
- 1390001206182885376
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- NII Article ID
- 130004224470
- 110002387023
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- NII Book ID
- AN00187441
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- ISSN
- 18848346
- 03875016
- http://id.crossref.org/issn/03875016
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- NDL BIB ID
- 6117092
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed