Waxy crude oils are, at low temperatures, highly non-Newtonian fluids. The crystallization of wax seems to be the cause of their non-Newtonian behavior. Moreover, the flow properties show time-dependence indicating an evolution of the structure with continued shear (termed 'thixotropy').In this paper, on the basis of the experimental data, we have developed a physical model which tries to describe the low temperature behavior of waxy crudes in laboratory experimental loops. The correspondent mathematical problem has been investigated performing a quasisteady approximation which we have shown to be physically consistent. Waxy crude oils are, at low temperatures, highly non-Newtonian fluids. The crystallization of wax seems to be the cause of their non-Newtonian behavior. Moreover, the flow properties show time-dependence indicating an evolution of the structure with continued shear (termed `thixotropy'). In this paper, on the basis of the experimental data, we have developed a physical model which tries to describe the low temperature behavior of waxy crudes in laboratory experimental loops. The correspondent mathematical problem has been investigated performing a quasisteady approximation which we have shown to be physically consistent.

FLOW CHARACTERISTICS OF WAXY CRUDE OILS IN LABORATORY EXPERIMENTAL LOOPS / A. FASANO. - In: MATHEMATICAL AND COMPUTER MODELLING. - ISSN 0895-7177. - STAMPA. - 25:(1997), pp. 75-86. [10.1016/S0895-7177(97)00031-9]

FLOW CHARACTERISTICS OF WAXY CRUDE OILS IN LABORATORY EXPERIMENTAL LOOPS

FASANO, ANTONIO
1997

Abstract

Waxy crude oils are, at low temperatures, highly non-Newtonian fluids. The crystallization of wax seems to be the cause of their non-Newtonian behavior. Moreover, the flow properties show time-dependence indicating an evolution of the structure with continued shear (termed 'thixotropy').In this paper, on the basis of the experimental data, we have developed a physical model which tries to describe the low temperature behavior of waxy crudes in laboratory experimental loops. The correspondent mathematical problem has been investigated performing a quasisteady approximation which we have shown to be physically consistent. Waxy crude oils are, at low temperatures, highly non-Newtonian fluids. The crystallization of wax seems to be the cause of their non-Newtonian behavior. Moreover, the flow properties show time-dependence indicating an evolution of the structure with continued shear (termed `thixotropy'). In this paper, on the basis of the experimental data, we have developed a physical model which tries to describe the low temperature behavior of waxy crudes in laboratory experimental loops. The correspondent mathematical problem has been investigated performing a quasisteady approximation which we have shown to be physically consistent.
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A. FASANO
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2158/4755
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