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Non-Newtonian fluid
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===Summary=== [[File:Rheology of time independent fluids.svg|thumb|right|alt=Graph of shear stress (vertical axis) against shear rate (horizontal axis). Three lines extend straight up and to the right from the origin: Newtonian (straight), pseudoplastic (bending down) and dilatant (bending up). Two others extend from a point on the vertical axis above the origin: Bingham plastic (straight) and Bingham pseudoplastic (bending down). |Classification of fluids with shear stress as a function of shear rate. The gradient of each line represents the material's viscosity at the given shear rate.]] {| class="wikitable" |+Comparison of non-Newtonian, Newtonian, and viscoelastic properties ! Behaviour ! Models ! Properties ! Examples |- |rowspan=1|[[Viscoelastic]] |[[Kelvin material]], [[Maxwell material]] |"Parallel" linear combination of elastic and viscous effects<ref name=springer2>{{cite book| title=Springer handbook of experimental fluid mechanics |first1=Cameron |last1=Tropea |first2=Alexander L. |last2=Yarin |first3=John F. |last3=Foss |publisher=Springer |year=2007 |isbn=978-3-540-25141-5 |pages=661, 676 |url=https://books.google.com/books?id=y0xDUAdQAlkC&q=thixotropic&pg=PA667}}</ref> |Some [[lubricant]]s, [[whipped cream]], [[Silly Putty]] |- |rowspan=2|[[Time-dependent viscosity]] |[[Rheopecty|Rheopectic]] |[[Apparent viscosity]] increases with duration of stress |[[Synovial fluid]], [[printer ink]], [[gypsum]] paste |- |[[Thixotropy|Thixotropic]] |Apparent viscosity decreases with duration of stress<ref name=springer2/> |[[Yogurt]], [[peanut butter]], [[xanthan gum]] solutions, aqueous [[iron oxide]] gels, [[gelatin]] gels, [[pectin]] gels, [[castor wax|hydrogenated castor oil]], some [[clay]]s (including [[bentonite]], and [[montmorillonite]]), [[carbon black]] suspension in molten tire rubber, some [[drilling mud]]s, many [[paint]]s, many [[Flocculant|floc]] suspensions, many [[colloid]]al suspensions |- |rowspan=3|Non-Newtonian viscosity |[[Shear thickening]] (dilatant) |Apparent viscosity increases with increased stress<ref name=padb/> |Suspensions of [[corn starch]] in water (oobleck) |- |[[Shear thinning]] (pseudoplastic) |Apparent viscosity decreases with increased stress<ref>{{cite book|title=Rheology of Fluid and Semisolid Foods: Principles and Applications |first=M. A. |last=Rao |publisher=Springer |edition=2nd|year=2007 |isbn=978-0-387-70929-1 |page=8 |url=https://books.google.com/books?id=BLlmimePW18C&q=%22shear+thinning%22&pg=PA8}}</ref><ref>{{cite book| title=Emulsions, Foams, and Suspensions: Fundamentals and Applications |first=Laurier L. |last=Schramm |publisher=Wiley VCH |year=2005 |isbn=978-3-527-30743-2 |page=173 |url=https://books.google.com/books?id=qFi61f1NqNIC&q=pseudoplastic&pg=PA173}}</ref> |[[Nail polish]], [[whipped cream]], [[ketchup]], [[molasses]], syrups, paper pulp in water, [[Acrylic paint|latex paint]], [[ice sheet dynamics|ice]], [[blood]], some [[silicone oil]]s, some [[silicone resin|silicone coatings]], [[quicksand|sand in water]] |- |- |colspan=1|[[Generalized Newtonian fluid]]s |Viscosity is function of the shear strain rate.<br />Stress depends on normal and shear strain rates and also the pressure applied on it |[[Blood plasma]], [[custard]], [[water]] |}
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