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Autori: CONSTANTIN FETECAU, ABDUL RAUF.
DOI: 10.24193/subbmath.2021.1.16
Published Online: 2021-03-20
Published Print: 2021-03-30
pp. 197-209
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ABSTRACT.
Steady motion of two types of incompressible Maxwell fluids with power-law dependence of viscosity on the pressure is analytically studied between infinite horizontal parallel plates when the gravity effects are taken into consideration. Simple and exact expressions are established for the permanent components of starting solutions corresponding to two oscillatory motions induced by the lower plate that oscillates in its plane. Such solutions are very important for the experimentalists who want to eliminate the transients from their experiments. The similar solutions for the simple Couette flow of the same fluids, as well as the permanent solutions corresponding to ordinary incompressible Maxwell fluids performing the same motions, are obtained as limiting cases of general solutions. The convergence of starting solutions to their permanent components as well as the influence of physical parameters on the fluid motion is graphically underlined and discussed.
Mathematics Subject Classification (2010): 76A05.
Keywords: Permanent solutions, UCM uids, Pressure-dependent viscosity.
