Investigation on the Flow Behaviour of Agar Solution and Rheological Modelling

Mukaddes Karataş

doi:10.17776/csj.1068886

EN

Investigation on the Flow Behaviour of Agar Solution and Rheological Modelling

Abstract

In this study, the effect of shear rate, agar concentration (15-35 kg/m3) and temperature (30-60°C) on the apparent viscosity of the agar solution was investigated. Apparent viscosities at different shear rates were determined using a rotational viscometer. The findings show that the apparent viscosity decreasing with a rise of shear rate increased with increasing concentration. An increase in the tempearture, on the other hand, led to a decrease in the apparent viscosity. To illustrate both temperature and concentration changes together, the Bingham, power law, and Casson models were utilized in choosing the most suitable model. When the models were compared using statistical tests, the most compatible model was found to be the power-law model. The consistency coefficient and flow behaviour index calculated using the power law model showed that agar solutions exhibited shear-thinning flow behavior (pseudoplastic). This study suggests that power law, within the ranges of the temperature and concentration studied could be used to estimate the viscosity of the agar solutions in the applications requiring the knowledge of flow behavior.

Keywords

References

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Details

Primary Language

English

Subjects

Chemical Engineering

Journal Section

Research Article

Authors

Mukaddes Karataş ^*
0000-0001-5803-6821
Türkiye

Publication Date

June 30, 2023

Submission Date

February 6, 2022

Acceptance Date

June 7, 2023

Published in Issue

Year 1970 Volume: 44 Number: 2

DOI

https://doi.org/10.17776/csj.1068886

IZ

https://izlik.org/JA69NJ86DL

Cite

RIS / Bibtex

APA

Karataş, M. (2023). Investigation on the Flow Behaviour of Agar Solution and Rheological Modelling. Cumhuriyet Science Journal, 44(2), 283-288. https://doi.org/10.17776/csj.1068886