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Study on Characteristics of Dilatant Fluid Flows in Eccentric Annular Channel(PDF)

南京师范大学学报(工程技术版)[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2016年04期
Page:
46-
Research Field:
能源与机械工程
Publishing date:

Info

Title:
Study on Characteristics of Dilatant Fluid Flows in Eccentric Annular Channel
Author(s):
Zhang Junbo1Zhang Min2
(1.Taizhou College,Nanjing Normal University,Taizhou 225300,China)(2.School of Energy and Power Engineering,Nanjing University of Science & Technology,Nanjing 210009,China)
Keywords:
FVMcell-based central methoddilatant fluideccentric annular channel
PACS:
TK124
DOI:
10.3969/j.issn.1672-1292.2016.04.008
Abstract:
This paper studies dilatant fluid whose power-law factor is greater than 1. To solve the problem of the apparent viscosity changing with the shearing rate and exhibiting highly non-linear feature,a cell-based central method is used for the non-linear viscosity coefficient discretization in unstructured grids. Finite volume method(FVM)is adopted for numerical simulation of fully developed laminar flow in eccentric annular channel. The calculation results show that the increase of power-law factor results in the apparent increase of fRe. The increase of eccentricity can lead to the asymmetrical distribution of velocity and reduce the value of fRe. In addition,the increase of radius ratio brings about the increase of velocity while having little impact on fRe.

References:

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Last Update: 2016-12-31