1993 Fiscal Year Final Research Report Summary
AN EXPERIMENTAL STUDY OF MAGNETICALLY-INDUCED HYDRODYNAMIC DISSIPATIVE STRUCTURES.
| Project/Area Number |
04804025
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
物理学一般
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| Research Institution | KYUSHU UNIVERSITY |
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Principal Investigator |
HONJI Hiroyuki Kyushu University Interdisplinary Graduate School of Engineering Science Professor, 大学院・総合理工学研究科, 教授 (80038538)
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| Project Period (FY) |
1992 – 1993
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| Keywords | Wake / Convection / Dissipative Structure / Lorentz Force / Magnetic Feild / 電解液 |
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| Research Abstract |
The hydrodynamic dissipative structures have been investigated of magnetically-induced wakes and convective cellular flows in a horizontal shallow tank, filled with an aqueous solution of electrolyte. Flows were driven by the Lorentz force due to the interaction between a d.c.electric current through the solution and static magnetic fields with various spatial configurations. Two main findings are :
(1)A periodic wake similar to Karman's vortex street forms behind a moving magnetic-field source in some limited ranges of flow parameters.
(2)A convective cellular flow consisting of large and small vortex pairs forms when the Lorentz force exceeds a critical value. Many photographs of flow patterns are included here to show directly various features of the magnetically-induced flows.
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