Turbulent flow of pseudoplastic polymer solutions in straight cylindrical tubes

AICHE Journal - Tập 5 Số 2 - Trang 181-188 - 1959
Robert G. Shaver1, Edward W. Merrill1
1Massachusetts Institute of Technology, Cambridge, Massachusetts

Tóm tắt

AbstractExperimental studies are described concerning the fluid dynamics, particularly in the turbulent region, of dilute solutions of free‐draining, nonassociating, linear polymers; sodium carboxymethylcellulose, ammonium alginate, polyisobutylene, and carboxypolymethylene, all of which are pseudoplastic. These solutions were run in laminar, transition, and turbulent flow in a pipeline flow apparatus designed to permit measurement of dynamic pressure drop and impact pressure by radial traverse.Photographic studies with dye injection used at the tube wall and at the tube center showed that turbulent flow of these pseudoplastic fluids has the following characteristics compared to Newtonian fluids: poor over‐all radial mixing, thicker nonturbulent layer at the wall, and decreased rate of formation of horseshoe vortices at the wall.

Từ khóa


Tài liệu tham khảo

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Thông tin
Thông tin xuất bản

AICHE Journal

Tập 5 Số 2

181-188

Thông tin tác giả