Thermal conductivity and viscosity of the nanofluid change marginally. Microconvection due to nanoparticle, aggregation, and chemistry of the suspension impacts both parameters methoned above. Non-Newtonian behavior of the nanofluid is dominated by the aggregation.
纳米颗粒的添加而引起的对流、颗粒的聚集结构及悬浮体系的化学性质等因素综合作用影响工质的导热系数，纳米颗粒的聚集结构是悬浮体系呈现非牛顿流体特征的根本原因。
The influence of protein content and temperature on the rheological curve, non-Newtonian flow index, structural viscosity index and spinnability of soybean protein/viscose blended solution was studied through researching the rheological behavior of the soybean protein/viscose blended solution.
通过对共混溶液流变性能的研究，验证了大豆蛋白含量和温度对大豆蛋白／粘胶共混溶液的流变曲线、非牛顿指数和结构粘度指数以及可纺性的影响。
It was shown in experimental results that the melt was a pseudoplastic and non-Newtonian fluid, but the variation of apparent viscosity for the copolymers with the shear rate was not in agreement with the power law model.
结果发现在所研究的温度和切变速率范围内，该结构聚醚酯熔体为假塑性非牛顿流体，其粘度随聚酯段含量的增加而增加，随熔融时间增加而降低，随聚醚分子量的增大而增大。
The viscosity is one of the most important flow properties of blood, the blood is a non-Newtonian fluid.
粘滞度是血流最重要的性质之一，血液是非牛顿流体，血液的粘度随着切变率的变化而变化。
With the increasing of solution concentration and the decreasing of temperature, the non-Newtonian index decreases, but the structural viscosity index and zero shear viscosity increase.
结果表明，该溶液属于切力变稀流体；随着溶液浓度的增加和温度的降低，溶液的非牛顿指数随之减小，而结构粘度指数、零切粘度随之增大；溶液的粘流活化能显示其表观粘度对温度比较敏感。
It also leads to natural expressions for the Newtonian and Non-Newtonian viscosity law for the liquids, as well as the fragility of the liquid.
非晶中各量之间关系的建立将加深我们对glass本质的理解，有助于我们探索新的玻璃材料，其意义是不言自喻的。
With strain rate increasing, free volume obtained from thermal fluctuations can't meet the need of more and more atomic jumps. It results in steady state Newtonian viscosity transfer to non-Newtonian viscosity.
应变速率增加，由热激活引起的自由体积增加不能满足更多原子流变所需的空间体积，导致牛顿流向非牛顿流转变。
This dissertation is related to the studies: The basic property of foam in porous media under reservoir condition. The forming, breaking and transporting of foam in ASP system under reservoir condition. The influence factors on foam behavior and its mechanism such as oil, polymer, interfacial tension, wettability, temperature, pore shape, gravity drainage, capillary suction, surface elasticity, viscosity, electric double-layer repulsion, dispersion force attraction and steric repulsion. The lib and pilot study about the phase behavior of ASP-Foam. Fractional-flow theory and its application to foam process at limiting capillary pressure. The building of entire ASP-Foam mathematical model. It considered ASP, rock, foam and oil and their interaction effects. Based on UTCHEM chemical flooding software, developed DQFOAM 1.0 ASP-Foam software. The software can be used to simulating the process in lib and field. It has the functions which can describe entire mechanism of ASP-Foam. Mainly it includs: velocity-dependent dispersion, molecular diffusion, diluent, crude oil effects, surfactant and polymer adsorption, interfacial tension, relative permeability, capillary pressure, hysteretic relative permeability and capillary pressure, capillary trapping, cation exchange, phase density, components and phase viscosity, phase behavior, aqueous reaction, partition of chemical species in oil and the aqueous phase, precipitation/dissolution, in-situ generation of surfactant by the reaction between alkali and acidic components of crude oil, effects of PH on surfactant adsorption, biodegradation, dual porosity model for simple phase tracer, polymer and gel properties such as permeability reduction and inaccessible pore volume and non-Newtonian rheology and adsorption, tracer reaction, influence of foam on mobility of gas, effects of permeability and flow rate and ASP on the strength of the foam. Performed the numerical simulation for the ASP-Foam flooding pilot in Daqing oil field. Provided some useful advises which can enhance the industrial application of the simulator.
本文在以下几个方面做了较深入的研究：①油藏条件下孔隙介质中泡沫的基本性质；②油藏条件下泡沫在三元体系中产生、破裂及其传输性质；③油藏条件下在三元体系中泡沫的影响因素及其机理，其中影响因素主要有原油、聚合物、界面张力、润湿性、温度、体液粘度、界面张力及孔隙的几何形状，其中作用机理主要有重力排液速度、毛细管吸入、表面弹性、双电层排斥、分散力的吸引和位排斥作用；④三元复合体系的相态和泡沫复合体系在油藏条件下性质的室内和矿场研究；⑤分流理论及其在油藏条件下泡沫过程中的应用；⑥建立了一个完整的泡沫复合驱数学模型，该模型考虑了三元、岩石、泡沫、原油、地层水的性质及其相互作用机理；⑦应用所建立的泡沫复合驱模型，在UTCHEM化学驱数值模拟软件基础上开发完成了DQFOAM1.0版本的泡沫复合驱数值模拟软件，应用该软件可以进行矿场和室内岩心驱实验的数值模拟研究及矿场泡沫复合驱方案的优化设计，同时该软件具有全面的机理描述功能，主要包括扩散和弥散，稀释作用，原油、表面活性剂和聚合物的吸附，界面张力，相对渗透率，毛细管压力，相对渗透率和毛细管压力滞后，毛细管捕集，离子交换，相密度，组分相粘度，相态，水相反应，化学物质在油和水中的分配，溶解／沉淀，由酸性原油就地产生表活剂，PH值影响表活剂吸附，有机物的生物降解作用，对于简单的相示踪剂流动的双重介质选项，聚合物的剪切降粘、不可及孔隙体积、渗透率降低、吸附，凝胶的粘度、渗透率降低、吸附，示踪剂的分配、吸附、放射性衰变、反应、不连通孔隙，温度影响粘度、示踪剂反应、凝胶反应、表活剂相态，泡沫对气体流度的影响以及渗透率、流速及三元体系浓度对泡沫强度的影响；⑧针对大庆油田进行了泡沫复合驱的室内岩心驱和矿场试验的数值模拟研究；⑨对泡沫复合驱数值模拟商业化软件的研制提出了切实可行的具体的改进意见。
However, it was non-Newtonian fluid at higher shear rates, and its melting viscosity decreased with the increase of shear rates.
同时探讨了分子量、剪切速率、温度对PVDF熔体非牛顿指数、粘流活化能等流变特性的影响。
Apparent viscosity, non-Newtonian index and structural viscosity index were obtained as a function of nonsolvent contents and temperatures.
摘 要：研究了聚丙烯腈/二甲基亚砜/水三元混合纺丝原液在不同的含水量和温度下的流变性能，获得了表观黏度、非牛顿指数和结构黏度指数对于含水量和温度的依赖关系。
Based on the theories of rheology, Non-Newtonian Fluid Mechanics, petroleum chemistry, crystallography and pipeline technology etc. and sampling Huabei crudes, experimental indexes and programmes are drew out, integrating the oil properties and parameter analysis; in terms of the macro analysis of continuum mechanics, substantial experiments are conducted with HAAKE RS600 rotational rheometer and the rheological equation as well as the viscosity-temperature equation are further developed with tested rhrogramme and viscosity-temperature curve, respectively. Beased on the researches on thixotropic mechanism and thixotropy fluid property, hysteresis loop curve, structure failure and viscosity build-up curve as well as shear stress decrement curve for one type oil are first present in this paper. According to the theoretical researches and testing results, a novel thixotropy equation with τ=τ_∞e~ pattern, which is of hi-accuracy, few parameter and simplicity, is developed. Considering the influence of various parameters on rheological behaviour, depressant adding condition is optimized and experimental evaluation on BEM-5P is conducted, which further unrip its mechanism on the Huabei crude. A corresponding viable pipe transportion programmel is also recommended.
本文基于原油流变学、非牛顿流体力学、石油化学、结晶学、原油管输工艺学等理论，以华北原油为研究对象，结合原油物性及实验影响因素分析，制定出实验研究的评价指标及实验方案；从连续介质力学宏观分析的角度，利用HAAKE RS600高端旋转流变仪开展了大量的室内实验，并运用微观研究方法，测定了油样的流变曲线和粘温曲线，建立了流变方程和粘温方程；通过对触变性机理和触变性流体特征的研究，首次对华北原油测定出滞回环曲线、结构破坏与恢复粘时曲线、剪切应力裂降过程曲线，并在理论研究和实验结果的基础之上，建立了能定量描述含蜡原油剪切应力裂降过程的新型三参数触变模式τ=τ_∞e~b/(t+c，该模型具有精度高、参数少、实验简便且适用性强的特点；通过对含蜡原油流变性的影响因素理论研究，开展了加剂条件优选及BEM-5P降凝剂室内评价实验，进一步揭示了降凝剂对华北原油作用机理，在此基础之上，提出了华北原油管输的可行性方案。
Based on the theories of rheology, Non-Newtonian Fluid Mechanics, petroleum chemistry, crystallography and pipeline technology etc. and sampling Huabei crudes, experimental indexes and programmes are drew out, integrating the oil properties and parameter analysis; in terms of the macro analysis of continuum mechanics, substantial experiments are conducted with HAAKE RS600 rotational rheometer and the rheological equation as well as the viscosity-temperature equation are further developed with tested rhrogramme and viscosity-temperature curve, respectively. Beased on the researches on thixotropic mechanism and thixotropy fluid property, hysteresis loop curve, structure failure and viscosity build-up curve as well as shear stress decrement curve for one type oil are first present in this paper. According to the theoretical researches and testing results, a novel thixotropy equationwith τ=τ_∞e~ pattern, which is of hi-accuracy, few parameter and simplicity, is developed. Considering the influence of various parameters on rheological behaviour, depressant adding condition is optimized and experimental evaluation on BEM-5P is conducted, which further unrip its mechanism on the Huabei crude. A corresponding viable pipe transportion programmel is also recommended.
本文基于原油流变学、非牛顿流体力学、石油化学、结晶学、原油管输工艺学等理论，以华北原油为研究对象，结合原油物性及实验影响因素分析，制定出实验研究的评价指标及实验方案；从连续介质力学宏观分析的角度，利用HAAKE RS600高端旋转流变仪开展了大量的室内实验，并运用微观研究方法，测定了油样的流变曲线和粘温曲线，建立了流变方程和粘温方程；通过对触变性机理和触变性流体特征的研究，首次对华北原油测定出滞回环曲线、结构破坏与恢复粘时曲线、剪切应力裂降过程曲线，并在理论研究和实验结果的基础之上，建立了能定量描述含蜡原油剪切应力裂降过程的新型三参数触变模式τ=τ_∞e~b/(t+c，该模型具有精度高、参数少、实验简便且适用性强的特点；通过对含蜡原油流变性的影响因素理论研究，开展了加剂条件优选及BEM-5P降凝剂室内评价实验，进一步揭示了降凝剂对华北原油作用机理，在此基础之上，提出了华北原油管输的可行性方案。
The fluid mechanics theory as a foundation, constructing plastic material flow model of the friction stir welding with the plastic material as high viscosity non-newtonian incompressible fluid.
以流体力学理论为基础，构建搅拌摩擦焊焊接过程中塑性材料的流动模型，建模时将塑性材料看成高粘度、非牛顿、不可压缩流体。
The apparent viscosity of wheat flour was proportion to the content of wheat flour, belonged to non-Newtonian flow.
小麦粉的胶体溶液的表观粘度与浓度呈正相关，为假塑性流体；
The equiv alent viscosity method is used to account for the visco-plastic characteristics of non-Newtonian fluid.
结果表明，热解的摩擦系数明显低于等温解的摩擦系数，当进一步考虑流体的非牛顿效应时，不仅温升的结果更为符合实际，摩擦系数也更接近试验结果。
According to some usual molecular weight distributions, the material functions, such as non-newtonian viscosity and first normal stress coefficient, for the steady-state shear flow and, therefore, the relationship between the intrinsic viscosity and the weight average degree of polymerization are derived.
对几种最常见的分子量分布，在稳态剪切流中，分别计算了它们的物质函数以及特性粘数与重均聚合度的关系。
PLA is a kind of non-Newtonian fluid. Its apparent viscosity declines with shear rate increasing. It is a shear-thinning pseudoplastic fluid, which is sensitive to the high shear rate.
聚乳酸是一种非牛顿流体，其表观粘度随剪切速率的增加而下降，属于切力变稀型假塑性流体，且对高剪切速率比较敏感。
The results showed that these three solution with different concentration of 10%, 20% and 30% belongs to non-Newtonian pseudoplastic fluid with non-Newtonian index of 0.73 - 0.99. Their apparent viscosity was decreased with the increase of temperature.
结果表明：3种不同浓度（10%，20%，30%）的溶液均属于非牛顿流体中的假塑性流体，非牛顿指数为0.73~0.99；随着温度的升高，溶液表观粘度下降；
NDJ-79 rotary viscometer is a precision instrument for measuring the absolute viscosity of Newtonian liquid and the apparent viscosity of non-Newtonian liquid.
用途 NDJ-79型旋转粘度计是一种测量各种牛顿型液体的绝对粘度和非牛顿型液体的表观粘度的精密仪器。
When the fluid is non-Newtonian fluid, the rheological parameter increases and the viscosity coefficient decreases with a rise of the temperature.
随着温度的升高，流变指数增大而稠度系数减小；