Dynamics of Encapsulated Gas Bubbles Immersed in Thixotropic Fluids

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概要

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• In the present work, forced oscillations of a single, spherical, encapsulated gas bubble, immersed in an unbounded thixotropic liquid, is investigated numerically. Relying on the Moore's model to represent the thixotropicity of the liquid, and the Kelvin-Voigt model to represent the viscoelasticity of the enclosing shell, the modified integro-differential Rayleigh-Plesset equation is solved numerically using the Gauss-Laguerre Quadrature (GLQ) method. It is shown that the thixotropic behavior of the surrounding liquid plays a key role in the emergence of harmonics. It is also shown that the viscoelastic properties of the shell material and also its wall thickness can dramatically affect the rise of harmonics for encapsulated contrast bubbles used in medical sonography.

• 一般社団法人 日本レオロジー学会の論文

著者

• Sadeghy K.

  University of Tehran, College of Engineering, Department of Mechanical Engineering

• Jalalisendi M.

  University of Tehran, College of Engineering, School of Mechanical Engineering

• Ranjbar M.A.

  University of Tehran, College of Engineering, School of Mechanical Engineering

• Sadeghy K.

  University of Tehran, College of Engineering, School of Mechanical Engineering

関連論文

• Collapse of Cavitation Gas Bubbles in Giesekus Liquids
• Collapse of Cavitation Gas Bubbles in Giesekus Liquids
• Dynamics of Encapsulated Gas Bubbles Immersed in Thixotropic Fluids

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