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Wax deposit accumulation in a "cylindrical Couette" geometry

Abstract : Models used to predict wax deposits overestimate the deposit thickness, and they require fitting parameters to match computational results to experimental data. A new approach is proposed. Waxy crude oil is considered as a viscoplastic Bingham fluid in which both viscosity and yield stress depend on temperature and quantity of wax crystals. Numerical simulations of the flow in a "cylindrical Couette" geometry were carried out. The numerical results highlight the influence of wax crystal content on the flow pattern, especially when comparing yielded and unyielded regions. A static layer region appears near the colder wall, representing the deposit.
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Submitted on : Tuesday, September 28, 2010 - 5:01:41 PM
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Amine Benallal, Philippe Maurel, Jean-François Agassant. Wax deposit accumulation in a "cylindrical Couette" geometry. Comptes Rendus Mécanique, Elsevier, 2008, 336 (11-12), pp.Pages 835-839. ⟨10.1016/j.crme.2008.09.007⟩. ⟨hal-00521864⟩



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