Predicting Pressure-Viscosity Behavior from Ambient Viscosity and Compressibility: Challenges and Opportunities

被引:26
|
作者
Ramasamy, Uma Shantini [1 ]
Bair, Scott [2 ]
Martini, Ashlie [1 ]
机构
[1] Univ Calif Merced, Sch Engn, Merced, CA USA
[2] Georgia Inst Technol, George W Woodruff Sch Mech Engn, Ctr High Pressure Rheol, Atlanta, GA 30332 USA
基金
美国国家科学基金会;
关键词
Viscosity correlation; Pressure-viscosity response; Pressure-viscosity coefficient; Molecular dynamics simulation; Lubrication; MOLECULAR-DYNAMICS; VOLUME; COEFFICIENT; SIMULATION;
D O I
10.1007/s11249-014-0454-5
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
The potential for using an empirical expression to predict the piezoviscous response of a fluid from its pressure-volume behavior is explored. This approach is particularly promising since the variation of volume with pressure can be obtained relatively easily using atomistic simulations that are based on the molecular structure of the fluid. The accuracy of predictions made using the proposed method is evaluated, and its limitations are discussed in terms of sources of error and potential means of minimizing that error going forward.
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页数:7
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