Abstract
Capillary rheometry has been used to examine materials that exhibit wall slip 1 . This paper presents comprehensive measurements of viscometric data for starch-based pastes using a capillary rheometer. A robust analytical scheme has been applied in order to obtain accurate values of the wall shear rate and wall slip velocity as a function of the bulk and wall shear stresses. These data have been fitted to appropriate constitutive relationships to describe the bulk and wall constitutive behaviour. Potential pitfalls in the implementation of the experimental procedure are discussed. Error analysis shows that small errors in experimental measurements are propagated such that the bulk and wall yield stress values cannot be determined accurately. The analysis suggests that additional data will be needed, although the bulk and wall flow curves are accurate over the range of strain rates and slip velocities measured.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
