Transactions of the Korean Society of Mechanical Engineers B (대한기계학회논문집B)
- Volume 22 Issue 7
- /
- Pages.899-904
- /
- 1998
- /
- 1226-4881(pISSN)
- /
- 2288-5324(eISSN)
DOI QR Code
A linear analysis of interfacial instabilities of ferrofluids
자기성 유체 계면의 선형안정성에 관한 연구
- Park, Chang-Ho (Dept.of Mechanical Engineering, Graduate School of Yeungnam University) ;
-
Ju, Sang-U
;
- Lee, Sang-Chun
- Published : 1998.07.01
Abstract
Surface motion of a magnetic fluid is studied by a linear stability analysis. When a thin horizontal magnetic-fluid layer is placed on a nonmagnetic substrate, with a vertical magnetic field applied, the surface of the ferrofluid layer can be severely corrugated, due to the normal-field instability. Based on conservation laws, it is shown that the normal-field instability of thin ferrofluid layers is a long-wave instability and that it is analogous to the interfacial mode of the thermocapillary instability in a thin horizontal layer heated from below.
Keywords