FLOW OF NEWTONIAN AND NON-NEWTONIAN FLUIDS IN CONCENTRIC AND ECCENTRIC ANNULI


NOURI J., UMUR H., WHITELAW J.

JOURNAL OF FLUID MECHANICS, vol.253, pp.617-641, 1993 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 253
  • Publication Date: 1993
  • Doi Number: 10.1017/s0022112093001922
  • Journal Name: JOURNAL OF FLUID MECHANICS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.617-641
  • Bursa Uludag University Affiliated: Yes

Abstract

Three components of mean velocity and the corresponding Reynolds shear stresses have been measured in fully developed concentric and eccentric annulus flows of a Newtonian fluid at bulk-flow Reynolds numbers of 8900 and 26600 and a weakly elastic shear-thinning polymer at effective bulk-flow Reynolds numbers of 1150, 6200 and 9600. The diameter ratio was 0.5 with eccentricities of 0, 0.5 and 1.0, and the use of a Newtonian fluid of refractive index identical to that of the Perspex working section facilitated the measurements by laser velocimetry.