In this paper, the high-order solution of a viscoelastic fluid is investigated using the discontinuous Galerkin (DG) method. The Oldroyd-B model is used to describe the viscoelastic behavior of the fluid flow. The high-order accuracy of the applied DG method is verified for a Newtonian benchmark problem with an exact solution. Next, the same algorithm is utilized to solve the viscoelastic flow by separating the stress tensor into the stress due to the Newtonian solvent and the stress due to the solved viscoelastic polymers. The high-order accuracy of the solution for viscoelastic flow is demonstrated by solving the planar Poiseuille flow. Then, the planar contraction problem is simulated as a benchmark for the viscoelastic flow. The obtained results are in good agreement with the results in the literature for both creeping and inertial flow when high-order polynomials were used even on coarse meshes.
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March 2015
Research-Article
High-Order Solution of Viscoelastic Fluids Using the Discontinuous Galerkin Method
Ehsan Mirzakhalili,
Ehsan Mirzakhalili
School of Mechanical Engineering,
College of Engineering,
e-mail: e.mirzakhalili@ut.ac.ir
College of Engineering,
University of Tehran
,North Karegar Avenue
,P.O. Box 11155-4563
,Tehran
, Iran
e-mail: e.mirzakhalili@ut.ac.ir
Search for other works by this author on:
Amir Nejat
Amir Nejat
1
Assistant Professor
School of Mechanical Engineering,
College of Engineering,
e-mail: nejat@ut.ac.ir
School of Mechanical Engineering,
College of Engineering,
University of Tehran
,North Karegar Avenue
,P.O. Box 11155-4563
,Tehran
, Iran
e-mail: nejat@ut.ac.ir
1Corresponding author.
Search for other works by this author on:
Ehsan Mirzakhalili
School of Mechanical Engineering,
College of Engineering,
e-mail: e.mirzakhalili@ut.ac.ir
College of Engineering,
University of Tehran
,North Karegar Avenue
,P.O. Box 11155-4563
,Tehran
, Iran
e-mail: e.mirzakhalili@ut.ac.ir
Amir Nejat
Assistant Professor
School of Mechanical Engineering,
College of Engineering,
e-mail: nejat@ut.ac.ir
School of Mechanical Engineering,
College of Engineering,
University of Tehran
,North Karegar Avenue
,P.O. Box 11155-4563
,Tehran
, Iran
e-mail: nejat@ut.ac.ir
1Corresponding author.
Contributed by the Fluids Engineering Division of ASME for publication in the JOURNAL OF FLUIDS ENGINEERING. Manuscript received January 20, 2014; final manuscript received October 4, 2014; published online November 20, 2014. Assoc. Editor: D. Keith Walters.
J. Fluids Eng. Mar 2015, 137(3): 031205 (9 pages)
Published Online: March 1, 2015
Article history
Received:
January 20, 2014
Revision Received:
October 4, 2014
Online:
November 20, 2014
Citation
Mirzakhalili, E., and Nejat, A. (March 1, 2015). "High-Order Solution of Viscoelastic Fluids Using the Discontinuous Galerkin Method." ASME. J. Fluids Eng. March 2015; 137(3): 031205. https://doi.org/10.1115/1.4028779
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