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Optical spinning rheometry test on viscosity curves of less viscous fluids at low shear rate range

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Title: Optical spinning rheometry test on viscosity curves of less viscous fluids at low shear rate range
Authors: Noto, Daisuke Browse this author
Ohie, Kohei Browse this author
Yoshida, Taiki Browse this author
Tasaka, Yuji Browse this author →KAKEN DB
Issue Date: Jan-2023
Publisher: Springer
Journal Title: Experiments in fluids
Volume: 64
Issue: 1
Start Page: 18
Publisher DOI: 10.1007/s00348-022-03561-z
Abstract: We propose a method, named optical spinning rheometry (OSR), to acquire kinematic viscosity curves of Newtonian and non-Newtonian fluids in the same framework. The OSR is independent of torque measurements and utilizes velocity information measured by particle tracking velocimetry. This optical approach enables flexibility in velocity resolution, and benefits exploring the low shear rate region. In addition, the kinematic viscosity of less viscous fluids like water or dilute polymer solutions can be assessed as being free from the mechanical limitations of torque sensors. The applicable range of the OSR is discussed in detail, and its performance is verified in Newtonian fluids. Demonstrations in dilute xanthan gum solutions, concentrations of O(10 ppm), show the capability of measuring their shear-thinning behaviors and the kinematic viscosity curves even in the first Newtonian regime.
Rights: This version of the article has been accepted for publication, after peer review (when applicable) and is subject to Springer Nature’s AM terms of use, but is not the Version of Record and does not reflect post-acceptance improvements, or any corrections. The Version of Record is available online at:
Type: article (author version)
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 田坂 裕司

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