Abstract
Transfer of heat in a steady state in non-Newtonian fluids flowing in laminar motion through circular tube with constant wall temperature has been treated theoretically and experimentally by a number of workers. However, on the distribution of temperature within the fluid, few experimental data have hitherto been published.The theoretical interpretations of the experimental data have so far been made under the assumptions that the physical properties, such as heat capacity, density, consistency index and thermal conductivity of the fluids are independent of temperature, and that the heat produced by viscous friction and the heat conduction in the axial direction are negligibly small.The temperature distribution in the radial directions were directly measured by thermistor probe. As samples of Newtonian and non-Newtonian fluids, water and aqueous solutions of sodium carboxymethylcellulose of various concentrations were respectively used. In the analysis of the latter fluid, the power law is assumed.The observed temperature distributions agree fairly well with the theoretical predictions except at the vicinity of the tube wall.
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