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Research Achievement of Microbubble Drag Reduction(PDF)

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

Issue:
2001年02期
Page:
220-224
Research Field:
Publishing date:

Info

Title:
Research Achievement of Microbubble Drag Reduction
Author(s):
YangYuwang SunSicheng WangZenggang
School of Mechanics,NUST,Nanjing 210094
Keywords:
microbubble drag reduct ion turbulent flow boundary layer
PACS:
O357.5;O357.3
DOI:
-
Abstract:
This paper int roduces mechanism, research methods and main results about m-i crobubble dray reduct ion. Based on theoret ical analysis, microbubble drag reduction is due to st ructure change of turbulent boundary layer caused by the microbubbles. Ex periments test ify microbubble drag reduct ion for turbulent boundary lay er, as well as bubble size, main f low velocity , etc. af fecting the reduct ion; w ith proper f low field model, turbulent model and difference scheme, numerical methods simulate the effect of boundary layer and bubble numbers on dray reduction. Coinciding conclusion is obtained throug h these methods, and this provides strong background for further engineering application of microbubble drag reduct ion.

References:

1 Madavan N K, Deutsch S, Merkle C L. Reductio n of turbulent skin fr ictio n by microbubbles.Physics of Fluids, 1984, 27( 2) : 356~ 363
2 Madavan N K, Deutsch S, Mer kle C L. The effects of po rous material o n microbubbles skin friction.AD-A143401, 1983
3 Kerkle C L, Deutsch S, Pal S, et al. Micr obubbles drag reduction. AD- A 198618, 1989
4 Madavan N K, Deutsch S, Merkle C L. Numerical investgation into the mechanisms of microbubbles drag reduction. J Fluids Engineer ing , 1985, 107: 370~ 377
5 Joao M P, Corr eia N. Stability and drag reduction in a boundar y lager w ith microbubble. ADA191975,1988
6 Har tmut H L. A simple mo del for g as bubble drag reduction. Phys Fluids, 1984, 27( 12) : 2788~2790
7 宋保维, 黄景良. 微气泡降低平板阻力的研究。水动力学研究与进展, 1989, 4( 4) : 105~ 114
8 Madav an N K, Deutsch S, Merkle C L. Mearsurments of local skin friction in a microbubblemodified tur bulent boundar y layer. J Fluid Mech, 1985, 156: 237~ 256
9 Deutsch S, Castano J. Microbubble skin friction reduction on an axisymmetr ic body. Phys Fluid,1986, 29( 11) : 3590~ 3596

Memo

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Last Update: 2013-03-25