Journal
PHYSICS OF FLUIDS
Volume 32, Issue 12, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/5.0033199
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Funding
- National Research Foundation, Prime Minister's Office, Singapore [MSRDP-P04]
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A microstructure model to describe the viscoelasticity and thixotropy properties of complex fluids is proposed. The model is based on the Lodge-Yamamoto network theory and is an extension of the Phan-Thien-Tanner model, with a kinetic process in which specific forms of creation and destruction rates are assumed. The final equation is simple with a small number of empirical parameters required and can be conveniently employed in engineering simulations. The predictions based on the model in a variety of shear and oscillatory shear flows are given. The stress response obtained from the model prediction agrees well with experiments on both shear and oscillatory flow histories.
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