Discontinuous shear thickening in Brownian suspensions by dynamic simulation
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- Romain Mari
- Benjamin Levich Institute, The City College of New York, New York, NY 10031;
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- Ryohei Seto
- Benjamin Levich Institute, The City College of New York, New York, NY 10031;
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- Jeffrey F. Morris
- Benjamin Levich Institute, The City College of New York, New York, NY 10031;
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- Morton M. Denn
- Benjamin Levich Institute, The City College of New York, New York, NY 10031;
抄録
<jats:title>Significance</jats:title> <jats:p>Colloidal shear thickening is a phenomenon by which a dense mixture (or suspension) of sub–micrometer-sized particles in a fluid becomes more viscous when strained. It has important (mostly negative) consequences as dense suspensions are found in many industrial processes. Its origin is a long-standing unsolved problem in soft-matter physics. We perform dynamic simulations that show that the shear thickening may be explained as a stress-induced transition from a flow of lubricated near-contacting particles to a flow of a frictionally contacting network of particles. Our numerical data quantitatively match previous experimental data.</jats:p>
収録刊行物
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- Proceedings of the National Academy of Sciences
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Proceedings of the National Academy of Sciences 112 (50), 15326-15330, 2015-11-30
Proceedings of the National Academy of Sciences