Paper Title:
Turbulent Drag Reduction in Journal Bearing by Polymer Additives
  Abstract

In this paper, a single parameter family of hybrid ellipsoid-dumbbell models is proposed for the hydrodynamic behavior of a polymer molecule in dilute solutions. The model allows for rotation and partial deforming of molecule, but not for bending. The periodic fluctuations and shear thinning have been obtained by numerically integrating the equations of motion over a wide range of the dimensionless parameter, a ratio of polymer-spring and solvent-viscosity forces. The results show that the rotation frequency decreases with the increasing shear rate because of the deformation effect, which increase the stability of flow. The effects of polymer additives on flow viscosity and its application are also discussed. These results will be significant for drag reduction mechanism.

  Info
Periodical
Advanced Materials Research (Volumes 233-235)
Edited by
Zhong Cao, Lixian Sun, Xueqiang Cao, Yinghe He
Pages
1231-1234
DOI
10.4028/www.scientific.net/AMR.233-235.1231
Citation
H. L. Wang, X. P. He, "Turbulent Drag Reduction in Journal Bearing by Polymer Additives", Advanced Materials Research, Vols. 233-235, pp. 1231-1234, 2011
Online since
May 2011
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Price
$32.00
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