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  • To develop a well-defined more complex flow field
  • To characterize the rheology of viscoelastic fluids under dynamic helical squeeze flow (DHSF)
  • To derive a comprehensive theory for the interpretation of experimental data
  • To predict the experimental results using model simulation
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Normal stress signal and Fourier rheology spectra

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Rheometry_c.jpg
  • Forward-tilted and nonsymmetric shape which means strong nonlinearity of normal component obtained from DHSF.
  • All higher order contributions represent nonlinear characteristics of fluids

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  • Strain-thinning behavior like large amplitude oscillatory shear flow
  • This is due to the nonsymmetric trademark of normal stress, which is more pronounced as strain amplitude increases.

Lissajous.jpg

Rheometry_f.jpg

Simple.jpg

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