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Universal Scaling Framework for Controlling Phase Behavior in Thickening and Jamming Suspensions.
Meera Ramaswamy1,2, Itay Griniasty1, James P Sethna1
1Cornell University, Department of Physics, Ithaca, New York 14853, USA.
Physical Review Letters
|February 21, 2025
Summary
Orthogonal perturbations control shear thickening in dense suspensions by integrating into a universal scaling framework. This framework unifies jamming and shear jamming critical points, enabling control over suspension phase behavior.
Area of Science:
- Rheology
- Soft Matter Physics
- Fluid Dynamics
Background:
- Shear thickening in dense suspensions is a complex phenomenon.
- A universal scaling framework was previously proposed, linking it to frictionless isotropic jamming and frictional shear jamming.
Purpose of the Study:
- To investigate the role of orthogonal perturbations in shear thickening.
- To integrate orthogonal perturbations into the existing universal scaling framework.
- To demonstrate control over suspension phase behavior using this framework.
Main Methods:
- Applying orthogonal shear perturbations to dense suspensions.
- Developing a multiplicative function to incorporate perturbation effects into scaling variables.
- Analyzing experimental data for collapse onto a universal curve.
Main Results:
- Orthogonal perturbations can be incorporated into the universal scaling framework.
- A multiplicative function effectively captures the influence of perturbations.
- Collapse of thickening and dethickening data onto a single universal curve was achieved.
- The framework allows for control over suspension phase behavior.
Conclusions:
- The universal scaling framework successfully incorporates orthogonal perturbations.
- This integrated framework provides a powerful tool for understanding and controlling shear thickening and jamming in suspensions.
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