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Energies 2017, 10(9), 1349; https://doi.org/10.3390/en10091349

Heat Transfer in a Drilling Fluid with Geothermal Applications

1
Department of Biomedical Engineering, Carnegie Mellon University, Pittsburgh, PA 15213, USA
2
Department of Mechanical and Industrial Engineering, Northeastern University, Boston, MA 02115, USA
3
U. S. Department of Energy, National Energy Technology Laboratory (NETL), 3610 Collins Ferry Road, Morgantown, WV 26507-0880, USA
4
U. S. Department of Energy, National Energy Technology Laboratory (NETL), 626 Cochrans Mill Road, Pittsburgh, PA 15236-0940, USA
*
Author to whom correspondence should be addressed.
Received: 14 July 2017 / Revised: 30 August 2017 / Accepted: 1 September 2017 / Published: 6 September 2017
(This article belongs to the Special Issue Mathematical and Computational Modeling in Geothermal Engineering)
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Abstract

The effects of various conditions on the fluid flow, particle migration and heat transfer in non-linear fluids encountered in drilling and geothermal applications are studied. We assume that the drilling fluid is a suspension composed of various substances, behaving as a non-linear complex fluid, where the effects of particle volume fraction, shear rate, and temperature on the viscosity and thermal diffusivity are considered. The motion of the particles is described using a concentration flux equation. Two problems are studied: flow in a vertical pipe and flow between two (eccentric) cylinders where the inner cylinder is rotating. We consider effects of earth temperature, the rotational speed of the inner cylinder, and the bulk volume fraction on the flow and heat transfer. View Full-Text
Keywords: geothermal energy; drilling fluid; concentrated suspension; heat transfer; non-Newtonian fluids; non-homogeneous fluids; rheology geothermal energy; drilling fluid; concentrated suspension; heat transfer; non-Newtonian fluids; non-homogeneous fluids; rheology
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Wu, W.-T.; Aubry, N.; Antaki, J.F.; McKoy, M.L.; Massoudi, M. Heat Transfer in a Drilling Fluid with Geothermal Applications. Energies 2017, 10, 1349.

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