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期刊论文
Entropy generation as a parameter to simulate the shear history effect of the beneficiated waxy crude oils
Proc. XIVth Int. Congr. On Rheology August 22-27, 2004, Seoul, Korea,-0001,():
Flow properties such as viscosity and gel point of waxy crude oils, particularly the beneficiated waxy crude oils, strongly depends on shear history the oil experienced, called the shear history effect. To simulate this shear history effect accurately is vital to oil pipeline design and operation. Shear rate is generally thought as a parameter for shear simulation. However, in many cases, shear rate is quite different from place to place in the flow field. Based on experiments on over 10 waxy crude oils, it is demonstrated that entropy generation due to viscous flow in the shear process can be a proper parameter for shear simulation, and by using entropy generation as a parameter describing shear, the shear history effect on viscosity and gel point of the beneficiated waxy crude oils was successfully modeled.
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