書誌事項
- タイトル別名
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- Numerical Analysis of the Aggregate Structure of Ferrofluids under the Uniform Magnetic Field. Study on the Microscopic System.
- イチヨウ ジバ デ ノ ジセイ リュウタイ ノ ギョウシュウ コウゾウ カイセキ ミクロスコピックケイ カラ ノ ケントウ
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抄録
Ferrofluids show a magnetic field response. Magnetic particles in ferrofluids make aggregations by the own magnetic moment. Magnetic particles in ferrofluids are usually covered with surfactants, and dispersion ability of ferrofluids is high. Therefore, the aggregation does not become a problem under no magnetic fields. However, the aggregation cannot be disregarded in the strong magnetic field because the magnetic moment of magnetic particles is orientated in the direction of magnetic field. Therefore, the rheological characteristics also show complex behavior in the magnetic field. In this research, the aggregate structure in the state of equilibrium under the uniform magnetic field is analyzed. And we do a research on the aggregate structure from the view point of the "microscopic system." Results obtained are as follows. (1) A cylindrical structure in a strong magnetic field is shown when the saturation magnetization of particles is small. And, a plate structure is shown when the saturation magnetization is large in a strong magnetic field. (2) The particles in the cylindrical aggregation move violently in comparison with particles in the plate aggregation. (3) The aggregation does not move as pulsing and the translational velocity of the particle is constant when the system considered is the state of equilibrium in spite of microscopic system. (4) There exists a metastable area in the aggregation of ferrofluids.
収録刊行物
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- 日本機械学会論文集B編
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日本機械学会論文集B編 67 (663), 2701-2708, 2001
一般社団法人 日本機械学会
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詳細情報 詳細情報について
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- CRID
- 1390001206182845696
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- NII論文ID
- 110002403386
- 130004224354
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- NII書誌ID
- AN00187441
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- ISSN
- 18848346
- 03875016
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- NDL書誌ID
- 5985262
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可