Etude expérimentale et numérique de la convection thermique d'un fluide d'Ostwald dans un coude isotherme en aval d'une conduite droite chauffante

Abstract : This thesis presents the study of the mixing at the outer region of an isothermal bend connected to an annular and tubular electrical heat exchanger. This configuration is usually used in agro-food industries for the preparation by thermal treatement of liquids, wich are generally non-newtonian, thermodependent. In order to determine experimentally the velocity and temperature fields, the Laser Doppler Anemometry and the Laser Induced Fluorescence are used. The initial conditions of the flow have been determined upstream the bend for dffferent experimental parameters (fluids, flow rate, heat flux). Finally, the study allowed to obtain the hydrodynamical and the thermal conditions of the flows in the bend and downstream it. The results have been confronted to a numerical CFD package: FIDAP. The conditions of mixing or no-mixing at the outer of the bend have been shown.
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Theses
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http://docnum.univ-lorraine.fr/prive/SCD_T_1999_0108_LACROIX.pdf
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Submitted on : Thursday, March 29, 2018 - 10:50:38 AM
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Véronique Lacroix. Etude expérimentale et numérique de la convection thermique d'un fluide d'Ostwald dans un coude isotherme en aval d'une conduite droite chauffante. Autre. Université Henri Poincaré - Nancy 1, 1999. Français. ⟨NNT : 1999NAN10108⟩. ⟨tel-01747078⟩

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