Suspension is a term used to describe an effective fluid made up of parcles suspended in a liquid; examples of such liquids abound in natural and man-made materials: blood, mild, paints, inks. The concept of a suspension is meaningful only when there are two widely different length scales in the problem: l is a typical dimension of a suspended particle and L is a typical size of the apparatus, and l « L. When this is not met, we have a collection of discrete individual particles suspended in a liquid. Most progress has been made with Newtonian suspensions, i.e., suspensions of particles in a Newtonian liquid. The review paper by Metzner 1421 contained most of the relevant information on the subject.
KeywordsTorque Vorticity Incompressibility
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