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Numerical simulation of heat transfer in a pipe with non-homogeneous thermal boundary condition

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URI: https://hdl.handle.net/10016/22012
ISBN: 0142-727X
DOI: 10.1016/j.ijheatfluidflow.2015.05.007
UXXI: CC/0000024002
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numerical_IJHFF_2015_pp.pdf (2.3 MB)
numerical_IJHFF_2015_ps.pdf (2.07 MB)
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2015-10
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Elsevier
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Abstract
Direct numerical simulations of heat transfer in a fully-developed turbulent pipe flow with circumferentially-varying thermal boundary conditions are reported. Three cases have been considered for friction Reynolds number in the range 180–360 and Prandtl number in the range 0.7–4. The temperature statistics under these heating conditions are characterized. Eddy diffusivities and turbulent Prandtl numbers for radial and circumferential directions are evaluated and compared to the values predicted by simple models. It is found that the usual assumptions made in these models provide reasonable predictions far from the wall and that corrections to the models are needed near the wall.
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Direct numerical simulation, Heat transfer, Pipe flow, Turbulence, Eddy-diffusivity
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Antoranz Perales, Antonio; Gonzalo Grande, Alejandro; Flores Arias, Óscar; García-Villalba Navaridas, Manuel (2015). Numerical simulation of heat transfer in a pipe with non-homogeneous thermal boundary condition. International journal of heat and fluid flow, vol. 55, pp. 45-51
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