STABILITY AND TRANSITION IN THE FLOW OFPOLYMER SOLUTIONS
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The linear stability analysis of a plane Couette flow of viscoelastic fluid have been studied with the emphasis on two dimensional disturbances with wave number k ~ Re 1/2, where Re is Reynolds number based on maximum velocity and channel width. We employ three models to represent the dilute polymer solution: the classical Oldroyd-B model, the Oldroyd-B model with artificial diffusivity and the non-homogeneous polymer model. The result of the linear stability analysis is found to be sensitive to the polymer model used. While the plane Couette flow is found to be stable to infinitesimal disturbances for the first two models, the last one exhibits a linear instability.
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- STABILITY AND TRANSITION IN THE FLOW OFPOLYMER SOLUTIONS
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- IUTAM Symposium on Laminar-Turbulent Transition
- pp 349-354
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- Fluid Mechanics and Its Applications
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- Springer Netherlands
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