Quasi-Three-Dimensional Simulation of Viscoelastic Flow through a Straight Channel with a Square Cross Section (工業レオロジー特集号)

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概要

• 論文の詳細を見る

• When a viscoelastic fluid flows in a straight channel with a noncircular cross section, a secondary flow is developed. We discussed the effect of flow characteristics on the secondary flow of the viscoelastic fluid through a straight channel with a square cross section by the viscoelastic flow simulation using the finite element method. The Phan-Thien Tanner (PTT) model was employed as the constitutive equation. The second normal stress difference N2 contributes to the secondary flow motion of a viscoelastic fluid through a straight channel with a square cross section. The degree of the secondary flow expressed by the maximum streamline function |ψmax| depends on the recoverable shear for the second normal stress difference −N2/2σ , where σ is shear stress. According to the distribution of N2 on the cross section, the flow direction of the secondary flow depends on the pressure drop generated by N2. The elongational flow characteristics also contribute to the secondary flow state. On the whole, the degree of the secondary flow increases with the strain-hardening. However, the contribution of elongational flow characteristics to the secondary flow is smaller than that of −N2/2σ.

• 一般社団法人　日本レオロジー学会の論文
• 2006-04-15

著者

• Tanoue Shuichi

  Department Of Radiology Oita Medical University

• IEMOTO Yoshiyuki

  Department of Materials Science and Engineering, Fukui University

• Naganawa Tomohiro

  Department of Materials Science and Engineering, University of Fukui

• Naganawa Tomohiro

  Department Of Materials Science And Engineering University Of Fukui

• Tanoue Shuichi

  Department Of Materials Science And Engineering University Of Fukui

• Iemoto Yoshiyuki

  Department Of Materials Science And Engineering University Of Fukui

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• Quasi-Three-Dimensional Simulation of Viscoelastic Flow through a Straight Channel with a Square Cross Section (工業レオロジー特集号)
• Quasi-Three-Dimensional Simulation of Viscoelastic Flow through a Straight Channel with a Square Cross Section (工業レオロジー特集号)

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