ARTICLE:

• TRANSIENT COOLING WITH SOLIDIFICATION OF A THERMODEPENDANT YIELD STRESS FLUID FLOWING IN A DUCT  download article

K. Javaherdeh
LEMTA CNRS 875 et Université Henri Poincaré, Vandoeuvre-les-Nancy, France

C. Nouar
LEMTA CNRS 875 et Université Henri Poincaré, Vandoeuvre-les-Nancy, France

Michel Lebouche
LEMTA UMR CNRS 7563-INPL-UHP, Vandoeuvre-lès-Nancy, France

R. Devienne
LEMTA CNRS 875 et Université Henri Poincaré, Vandoeuvre-les-Nancy, France

ABSTRACT

This study is dedicated to the cooling of Herschel-Bulkley fluids flowing in circular pipes. These fluids exhibit yield effect, their rheological comportment law being τ = τ_s+K·γⁿ and also some thermodependancy, the consistency being a function of the temperature according to K = a·exp−b_k·T. We present numerical results concerning the temporal development and also some experimental results for stationnary situations.

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