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Experiments on the flow of viscoelastic fluids between eccentric rotating cylinders

Thesis/Dissertation ·
OSTI ID:7245678
Experiments on the flow of viscoelastic fluids between rotating cylinders are described. The major objective was to provide data for comparison with numerical calculations made in a companion project. Two techniques were used in these experiments, flow visualization and laser Doppler velocimetry (LDV). For the LDV experiments, an automated positioning system was constructed for use with a commercial LDV system to allow unattended acquisition of large quantities of point velocity data. Velocities were measured in steady flows between eccentric cylinders and in transient flows between concentric cylinders after the inner cylinder was started from rest. In all of the experiments the outer cylinder diameter was twice that of the inner cylinder. Flow-visualization photographs were taken only of steady flows between eccentric cylinders. Results of these experiments on steady flows showed only small effects due to the non-Newtonian characteristics of the test fluids.
Research Organization:
Wisconsin Univ., Madison (USA)
OSTI ID:
7245678
Country of Publication:
United States
Language:
English