Linear viscoelastic analysis using frequency-domain algorithm on oscillating circular shear flows for bubble suspensions

• Tasaka, Yuji

• Yoshida, Taiki

• Rapberger, Richard

• Murai, Yuichi

抄録

To achieve a stable evaluation of the linear viscoelasticity of bubble suspensions, which have difficulties for conventional rheometers from spatial distributions of rheological properties with bubble deformations, we proposed a novel rheometry based on spatio-temporal velocity data obtained by ultrasonic velocity profiling (UVP). A frequency-domain algorithm was adopted to overcome a critical influence of measurement noise on the rheological assessment, which is inferred from error propagation characteristics through the equations of motion in discretized form. Applicability and advantage of the present rheometry with the frequency-domain algorithm were verified by two kinds of fluids: high viscous oil as a Newtonian fluid and polyacrylamide aqueous solution as a shear thinning, viscoelastic fluid. The rheometry was finally adopted for bubble suspensions subject to high oscillatory shear, and it could validly extract elasticity-originated momentum transfer as a function of space.

収録刊行物

• Rheologica Acta

  Rheologica Acta 57 (3), 229-240, 2018-03

  Springer

キーワード

• Rheometry
• Ultrasonic velocimetry
• Linear viscoelasticity
• Bubble suspensions

詳細情報

• CRID: 1050282814032962176
• NII論文ID: 120006558990
• DOI: 10.1007/s00397-018-1074-z
• ISSN: 14351528
• ISSN: 00354511
• HANDLE: 2115/72705
• Web Site: http://link.springer.com/article/10.1007/s00397-018-1074-z/fulltext.html
• Web Site: http://link.springer.com/content/pdf/10.1007/s00397-018-1074-z.pdf
• 本文言語コード: en
• 資料種別: journal article
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