Natural convection of a viscoelastic fluid |
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Authors: | K -J Röpke P Schümmer |
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Institution: | (1) Rütgerswerke AG, Varziner Straße 49, D-4100 Duisburg 12, Germany;(2) Institut für Verfahrenstechnik, RWTH Aachen, Turmstraße 46, D-5100 Aachen, Germany |
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Abstract: | The influence of elasticity and shear thinning viscosity on the temperature distribution and heat transfer in natural thermal convection is discussed. The numerical investigations are based on a four-parameter Oldroyd constitutive equation, which represents the typical fluid response of dilute solutions and melts. It was found that especially the second normal-stress difference affects the heat transfer mechanism. |
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Keywords: | Numerical investigation transient natural convection viscoelasticity heat transfer |
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