Analysis of Flow Behavior of Non-Newtonian Fluids Based on a Concept of Traveling Force

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概要

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• The non-Newtonian flow behavior of a culture fluid with suspended adhesive particles of microbes and polysaccharides is analyzed in this study based on a new concept. The concept assumes that the force generated by the contact between particles under shearing flow due to mixing is decreasingly transmitted through the fluid in radial directions. A viscosity equation that includes the degree of force transmisson is derived by considering the shear stress to the force. On the other hand, the shear stress dependence on the concentration of bound particles is expressed in an equation by introducing an effective shear stress that works on the contact sites of the bindings and varies the concentration. Relating the degree of force transmission to the concentration derives a non-Newtonian viscosity equation in terms of shear stress (or shear rate), in which zero-shear viscosity is correlated with both the particle concentration and molecular weight of polymers. It is confirmed that calculations based on the equation are in good agreement with experimental results previously reported for aqueous solutions of several polysaccharides.

• 社団法人日本生物工学会の論文
• 1999-02-25

著者

• TODA KIYOSHI

  Institute of Applied Microbiology, The University of Tokyo

• Toda K

  Faculty Of Engineering Niigata Institute Of Technology

• FURUSE HISAMOTO

  Institute of Molecular and Cellular Biosciences, The University of Tokyo

• Toda Kiyoshi

  Institute Of Molecular And Cellular Biosciences University Of Tokyo

• Toda Kiyoshi

  Institute Of Applied Microbiology The University Of Tokyo

• Furuse Hisamoto

  Institute Of Applied Microbiology University Of Tokyo

• Furuse Hisamoto

  Institute Of Molecular And Cellular Biosciences University Of Tokyo

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