What are the key variables in the conceptual framework about non-Newtonian fluids?
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The key variables in the conceptual framework about non-Newtonian fluids include viscosity, shear rate, strain, elongation rate, and shear stress. Non-Newtonian fluids do not follow Newton's law of viscosity and have variable viscosity dependent on stress . Different flow types, such as shearing and elongational flows, need to be distinguished in order to accurately model non-Newtonian fluid properties . Machine learning techniques can be used to construct continuum non-Newtonian fluid dynamics models, with parameters derived from microscale descriptions . The rheological properties of non-Newtonian fluids can be manipulated by chemical reactions, resulting in distinct shear thickening and shear thinning behaviors . In the study of non-Newtonian fluid flow, variables such as flow behavior index, dimensionless frequency, and Weissenberg number play important roles in determining the velocity field and fluid behavior .
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| The paper does not explicitly mention a conceptual framework about non-Newtonian fluids. | |
19 Citations | The key variables in the conceptual framework about non-Newtonian fluids are the charge density and the hydrophobic effect of the engineered polyelectrolytes. |
| The paper does not explicitly mention the key variables in the conceptual framework about non-Newtonian fluids. | |
01 Jan 2022 | The paper does not explicitly mention the key variables in the conceptual framework about non-Newtonian fluids. |
| The paper does not explicitly mention the key variables in the conceptual framework about non-Newtonian fluids. |
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The study on the flow behavior of polystyrene solutions, which shares similarities with PCL in terms of polymer behavior in solutions, indicates that polymers can exhibit non-Newtonian behavior such as shear thinning and normal stress differences. This suggests that under certain conditions, PCL could exhibit similar non-Newtonian behaviors when in solution or when modified.
Further evidence of PCL's potential non-Newtonian behavior comes from the exploration of its rheological properties when modified through reactive melt processing (REx). The modification led to an increase in viscosity and a shift from Newtonian to shear-thinning behavior, indicating that PCL can exhibit non-Newtonian characteristics when chemically modified.
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