User profiles for Duygu Vargun
 | Duygu VargunOak Ridge National Laboratory Verified email at ornl.gov Cited by 57 |
Continuous data assimilation applied to a velocity-vorticity formulation of the 2D Navier-Stokes equations
We study a continuous data assimilation (CDA) algorithm for a velocity-vorticity formulation
of the 2D Navier-Stokes equations in two cases: nudging applied to the velocity and vorticity, …
of the 2D Navier-Stokes equations in two cases: nudging applied to the velocity and vorticity, …
Accelerating and enabling convergence of nonlinear solvers for Navier–Stokes equations by continuous data assimilation
This paper considers improving the Picard and Newton iterative solvers for the Navier–Stokes
equations in the setting where data measurements or solution observations are available. …
equations in the setting where data measurements or solution observations are available. …
Enabling convergence of the iterated penalty Picard iteration with O (1) penalty parameter for incompressible Navier–Stokes via Anderson acceleration
This paper considers an enhancement of the classical iterated penalty Picard (IPP) method
for the incompressible Navier–Stokes equations, where we restrict our attention to O ( 1 ) …
for the incompressible Navier–Stokes equations, where we restrict our attention to O ( 1 ) …
Improved convergence of the Arrow–Hurwicz iteration for the Navier–Stokes equation via grad–div stabilization and Anderson acceleration
We consider two modifications of the Arrow–Hurwicz (AH) iteration for solving the incompressible
steady Navier–Stokes equations for the purpose of accelerating the algorithm: grad–…
steady Navier–Stokes equations for the purpose of accelerating the algorithm: grad–…
Anderson acceleration for a regularized Bingham model
This article studies a finite element discretization of the regularized Bingham equations that
describe viscoplastic flow. An efficient nonlinear solver for the discrete model is then …
describe viscoplastic flow. An efficient nonlinear solver for the discrete model is then …
Anderson acceleration of a Picard solver for the Oldroyd-B model of viscoelastic fluids
We study an iterative nonlinear solver for the Oldroyd-B system describing incompressible
viscoelastic fluid flow. We establish a range of attributes of the fixed-point-based solver, …
viscoelastic fluid flow. We establish a range of attributes of the fixed-point-based solver, …
Removing splitting/modeling error in projection/penalty methods for Navier-Stokes simulations with continuous data assimilation
We study continuous data assimilation (CDA) applied to projection and penalty methods for
the Navier-Stokes (NS) equations. Penalty and projection methods are more efficient than …
the Navier-Stokes (NS) equations. Penalty and projection methods are more efficient than …
Acceleration Methods for Nonlinear Solvers and Application to Fluid Flow Simulations
D Vargun - 2023 - search.proquest.com
This thesis studies nonlinear iterative solvers for the simulation of Newtonian and non-Newtonian
fluid models with two different approaches: Anderson acceleration (AA), an …
fluid models with two different approaches: Anderson acceleration (AA), an …
Accelerating and enabling convergence of nonlinear solvers for Navier-Stokes equations by continuous data assimilation
This talk considers improving the Picard and Newton iterative solvers for the Navier-Stokes
equations in the setting where data measurements or solution observations are available. …
equations in the setting where data measurements or solution observations are available. …