Resistance of Flow through an Annulus with an Inner Rotating Cylinder
Bibliographic Information
- Other Title
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- 内管が回転する二重管内の流動抵抗
- ナイカン ガ カイテン スル ニジュウ カンナイ ノ リュウドウ テイコウ
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Abstract
In this paper, the resistance of water flow throush co-axial cylinders is studied experimentally, when the inner cylinder rotates. The resistances are measured for six gap sizes (s/r1=0.0136∼0.115, s : gap, r1 : radius of inner cylinder) and for various combination of axial and rotational flows. Results obtained are as follows : 1. When the axial flow is laminar, the resistance of flow is unaffected up to a cartain rotating speed (Rωe : critical rotatins Reynolds number), but beyond this speed the flow resistance increases as the Rω increases. 2. The value of critical Taylor number Rωe(s/r1)1/2 increases as the axial Reynolds number(Re=vm s/ν) increases up to a certain value (Re=600), beyond this value Rωe (s/r1)1/2 decreasee to zero with the increase of Re. When the axial flow is turbulent, such a critical rotating Reynolds number Rωe cannot be recognized. 3. When Rω>10 000, resistance coefficient of flow λ can be expressed by [numerical formula]even for small Re.
Journal
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- Transactions of the Japan Society of Mechanical Engineers
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Transactions of the Japan Society of Mechanical Engineers 27 (180), 1267-1276, 1961
The Japan Society of Mechanical Engineers
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Details 詳細情報について
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- CRID
- 1390282680133502720
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- NII Article ID
- 110002459991
- 110002351471
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- NII Book ID
- AN00187419
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- ISSN
- 21859485
- 24242675
- 00290270
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- NDL BIB ID
- 9150823
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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