Non-isothermal laminar pipe flow — II. Experimental |
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Authors: | PB Kwant RHE Fierens A Van Der Lee |
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Affiliation: | Laboratorium voor Fysische Technologie der Technische Hogeschool, Delft, The Netherlands |
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Abstract: | In a previous article 1] theoretical predictions of velocity distributions, pressure drops and mean Nusselt-numbers are given for non-isothermal pipe flow of power-law fluids having a temperature dependent consistency-index. In the present investigation these solutions are checked for Newtonian fluids with extensive experimental data.A flow visualization technique was used for measuring the non-isothermal, laminar velocity profiles of glycerol in a round tube. Furthermore, accurate pressure drop measurements were carried out for non-isothermal tube flow of a viscous. Newtonian liquid. Finally logarithmic mean heat transfer coefficients were measured in laminar flow heat transfer.The experimental velocity profiles, pressure drops and heat transfer coefficients show a good agreement with those predicted theoretically. |
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