The flow of nonlinear viscoelastic fluids between oscillating parallel plates is investigated. The investigation features time-dependent analysis of a complicated viscoelastic material modeled based on the Johnson-Segalman constitutive relation. Given the rheological parameters of certain material known from experiments, the coefficients of Johnson-Segalman constitutive equation model for the material are evaluated by fitting the data. The problem is first formulated by writing the governing equations for the flow between two independently oscillating parallel plates, i.e. oscillating Couette flow. The velocity and stress are represented by symmetric and antisymmetric Chandrasekhar functions in space. Both inertia and normal stress effects are included. A numerical scheme is applied to solve the governing equations in time domain projected by Galerkin method. For given Reynolds number and viscosity ratio, one critical Weissenberg numbers is found at which an exchange of stability occurs between the Couette and other steady flows. The model is capable of predicting the nonlinear amplitude-dependent behavior of viscoelastic flows under single and multiple-frequency excitations.
Skip Nav Destination
ASME 2012 International Mechanical Engineering Congress and Exposition
November 9–15, 2012
Houston, Texas, USA
Conference Sponsors:
- ASME
ISBN:
978-0-7918-4523-3
PROCEEDINGS PAPER
Oscillating Viscoelastic Flow
Nariman Ashrafi,
Nariman Ashrafi
Islamic Azad University, Tehran, Iran
Search for other works by this author on:
Sepideh Samghani
Sepideh Samghani
Islamic Azad University, Tehran, Iran
Search for other works by this author on:
Nariman Ashrafi
Islamic Azad University, Tehran, Iran
Sepideh Samghani
Islamic Azad University, Tehran, Iran
Paper No:
IMECE2012-85635, pp. 1035-1042; 8 pages
Published Online:
October 8, 2013
Citation
Ashrafi, N, & Samghani, S. "Oscillating Viscoelastic Flow." Proceedings of the ASME 2012 International Mechanical Engineering Congress and Exposition. Volume 7: Fluids and Heat Transfer, Parts A, B, C, and D. Houston, Texas, USA. November 9–15, 2012. pp. 1035-1042. ASME. https://doi.org/10.1115/IMECE2012-85635
Download citation file:
11
Views
Related Proceedings Papers
Related Articles
Combined Influence of Fluid Viscoelasticity and Inertia on Forced Convection Heat Transfer From a Circular Cylinder
J. Heat Transfer (April,2020)
High-Order Solution of Viscoelastic Fluids Using the Discontinuous Galerkin Method
J. Fluids Eng (March,2015)
The Gas Penetration Through Viscoelastic Fluids With Shear-Thinning Viscosity in a Tube
J. Fluids Eng (March,2004)
Related Chapters
Processing/Structure/Properties Relationships in Polymer Blends for the Development of Functional Polymer Foams
Advances in Multidisciplinary Engineering
Stability and Range
Design and Analysis of Centrifugal Compressors
Viscosity Measurements of Polymer Modified Asphalts
Polymer Modified Asphalt Binders