NONLINEAR SIMULATION OF VISCOELASTIC FINGERING INSTABILITY

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KAYHANI MOHAMMAD HASSAN; SHOKRI HOSNA; NOROUZI MAHMOOD

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Journal: Modares Mechanical Engineering Year:2016 | Volume:16 | Issue:8 Page(s): 0-0

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Title

NONLINEAR SIMULATION OF VISCOELASTIC FINGERING INSTABILITY

Author(s)

KAYHANI MOHAMMAD HASSAN | SHOKRI HOSNA | NOROUZI MAHMOOD | Issue Writer Certificate

Keywords

FINGERING INSTABILITYQ1

VISCOELASTIC FLUIDQ2

CRIMINALE-ERIKSEN-FILBEY CONSTITUTIVEQ1

EQUATIONQ1

Abstract

In this study, the viscous FINGERING INSTABILITY in miscible displacement of Newtonian fluid byViscoelastic fluid is investigated. The Criminale–Eriksen–Filbey (CEF) model has been used as theconstitutive EQUATION. Simplicity and dependence of rheological functions to shear rate are theadvantages of this model. Also, the Carreau-Yasuda model was used to show this dependency. Innonlinear simulation, using spectral method based on Hartly transforms, the effect of rheologicalfunctions of displacing VISCOELASTIC FLUID on this instability has been studied. The results includeconcentration contours, transversely averaged concentration profiles, mixing length and sweepefficiency. The results show that, by changing the parameters in order to increase viscosity of displacingviscoelastic fluid, flow becomes more stable. In other words, sweep efficiency is increased and mixinglength is decreased. Also, at first, the sweep efficiency increases with changing the parameters so thatthe first normal stress difference in this type of fluid can be increased and then is decreased withevolution of fingering. However, this factor will have little effect on mixing length. In addition, as wellas viscous fingering, several nonlinear finger interactions such as spreading, coalescence and tipsplitting were observed in simulation of viscoelastic FINGERING INSTABILITY.

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APA: Copy

KAYHANI, MOHAMMAD HASSAN, SHOKRI, HOSNA, & NOROUZI, MAHMOOD. (2016). NONLINEAR SIMULATION OF VISCOELASTIC FINGERING INSTABILITY. MODARES MECHANICAL ENGINEERING, 16(8), 0-0. SID. https://sid.ir/paper/356069/en

Vancouver: Copy

KAYHANI MOHAMMAD HASSAN, SHOKRI HOSNA, NOROUZI MAHMOOD. NONLINEAR SIMULATION OF VISCOELASTIC FINGERING INSTABILITY. MODARES MECHANICAL ENGINEERING[Internet]. 2016;16(8):0-0. Available from: https://sid.ir/paper/356069/en

IEEE: Copy

MOHAMMAD HASSAN KAYHANI, HOSNA SHOKRI, and MAHMOOD NOROUZI, “NONLINEAR SIMULATION OF VISCOELASTIC FINGERING INSTABILITY,” MODARES MECHANICAL ENGINEERING, vol. 16, no. 8, pp. 0–0, 2016, [Online]. Available: https://sid.ir/paper/356069/en

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