We introduce a constitutive model to describe the rheological behavior of gelled waxy crude oil. The irreversible time-dependence effects were experimentally characterized and incorporated into the model. The model is developed with basis on the data of standard rheological tests to determine the parameters of novel material functions that arise in the model development procedure, namely, flow curve, destruction, and construction tests. The fluidity is directly employed as the indicator of the structuring level of the material. Good agreement is observed between the model predictions and the data, corroborating its potential as a useful tool in the study of start-up flows of gelled crudes in pipelines.

中文翻译：

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胶凝含蜡原油的不可逆时间依赖性：流动实验和建模

我们引入了一个本构模型来描述胶凝蜡质原油的流变行为。不可逆的时间依赖性效应通过实验表征并纳入模型。该模型是在标准流变测试数据的基础上开发的，以确定模型开发过程中出现的新材料函数的参数，即流动曲线、破坏和构造测试。流动性直接作为材料结构化程度的指标。在模型预测和数据之间观察到良好的一致性，证实了其作为研究管道中胶凝原油启动流量的有用工具的潜力。