期刊
KOREA-AUSTRALIA RHEOLOGY JOURNAL
卷 25, 期 4, 页码 233-242出版社
KOREAN SOC RHEOLOGY
DOI: 10.1007/s13367-013-0024-7
关键词
Bautista-Manero-Puig model (BMP); yield Stress; rheological modeling; complex Fluids
资金
- National Council of Science and Technology of Mexico (CONACYT) [162980, 100195]
- Canadian Government through Foreign Affairs and International Trade Canada (DFAIT)
- Conacyt Project [100195]
- [147870]
In the present work, the yield stress of complex materials is analyzed and modeled using the Bautista-Manero-Puig (BMP) constitutive equation, consisting of the upper-convected Maxwell equation coupled to a kinetic equation to account for the breakdown and reformation of the fluid structure. BMP model predictions for a complex fluid in different flow situations are analyzed and compared with yield stress predictions of other rheological models, and with experiments on fluids that exhibit yield stresses. It is shown that one of the main features of the BMP model is that it predicts a real yield stress (elastic solid or Hookean behavior) as one of the material parameters, the zero shear-rate fluidity, is zero. In addition, the transition to fluid-like behavior is continuous, as opposed to predictions of more empirical models.
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