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Evolution of global enstrophy in cylinder wake controlled by Lorentz force.
- Source :
-
Applied Mathematics & Mechanics . Nov2008, Vol. 29 Issue 11, p1505-1516. 12p. 4 Black and White Photographs, 1 Diagram, 6 Graphs. - Publication Year :
- 2008
-
Abstract
- The Okubo-Weiss function is correlated with the fluid particle compression, deformation and vorticity, which provides a simple way to characterize different regions of a flow-field. In the present paper, it shows mathematically that the global integration of Okubo-Weiss function is always equal to zero for a two dimensional incompressible flow with no-slip boundaries. To validate the conclusion, a flow passing a circular cylinder controlled by the electromagnetic force is calculated numerically as an example. Distributions of global enstrophy, total squared strain and Okubo-Weiss function in the controlled flow field are discussed. The influence of Lorentz force on the distribution is analyzed. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 02534827
- Volume :
- 29
- Issue :
- 11
- Database :
- Academic Search Index
- Journal :
- Applied Mathematics & Mechanics
- Publication Type :
- Academic Journal
- Accession number :
- 35119842
- Full Text :
- https://doi.org/10.1007/s10483-008-1111-y