|Table of Contents|

Boundary Layer of Flow Around Cylinder and Its Electromagnetic Control

《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

Issue:
2005年03期
Page:
308-311
Research Field:
Publishing date:

Info

Title:
Boundary Layer of Flow Around Cylinder and Its Electromagnetic Control
Author(s):
DING Han-xin FAN Bao-chun ZHOU Ben-mou CHEN Zhi-hua
School of Power Engineeing, NUST, Nanjing 210094, China
Keywords:
electrom agnetic hydrom echan ics flow control cy linderw ak
PACS:
O361
DOI:
-
Abstract:
The e lectromagnet ic forces generated by the e lectromagnetic field and localized around the c ircular cy linder surface are used to mod ify the boundary layer of flow and to con tro l the flow field structure of the circu lar cylinder f low. The circular cy linder are covered w ith electromagne tic actuators and located in electro lyte so lut ion at low Renau lts (R e< 150) . Based on the vortic ity-stream funct ion formu la tion o f the Nav ier-Stokes equat ions, and by adopting the exponentia-l po lar coordinates, the numerica l investigat ions on thew ake of cy linder and the ve loc ity distribution o f the boundary are performed. TheA lternative- D irection Implicit algo rithm for the vo rt ic ity transpo rt equation, and the Fast Fourier Transfo rm algo rithm for the stream function equation are used w ith the accuracy of second order in space and first order in t ime. The correspond ing exper iments are carried out and the ir resu lts are ana lyzed.

References:

[ 1 ] Gailitis A, L ie lausis O. On a possib ility to reduce the hydrodynam ica l resistance o f a plate in an electro lyte[ J]. AppliedM agnetohydrodynam ics, 1961, 12: 143- 146.
[ 2] H enoch C, Stace J. Experim enta l investigation o f a salt w ater turbulent boundary lay er mod ified by an applied streamw ise m agnetohydrodynam ic body force [ J]. Phys Flu ids, 1995, 7( 6): 1 371- 1 3 82.
[ 3] W e ier T, Gerbe th G, Mu tschkeG, e t al. Experim ents on cy linder w ake stabiliza tion in an electro ly te so lution by m eans o f e lec trom agnetic fo rces localized on the cy linder surface [ J]. Exper im enta l Therm al and F lu id Science, 1998, 16: 84- 91.
[ 4] K im S J, Lee C M. 2000. Investiga tion o f the flow around a c ircular cy linder unde r the influence o f an e lectromagne tic fie ld[ J]. Exp. Fluids, 2000, 28: 252- 260.
[ 5] 陈志华, 范宝春. 包覆电磁场激活板的圆柱尾迹的数值研究[ J]. 力学学报, 2002, 23( 6): 473- 477.
[ 6] 范宝春, 姜孝海, 叶经方. 电磁力的消涡减阻[ J]. 兵工学报, 2003, 24( 1): 57- 62.

Memo

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Last Update: 2013-03-03