Subgrid Stabilized Defect Correction Methods for the Navier–Stokes Equations

2006-1
Kaya Merdan, Songül
Rivière, Béatrice
We consider the synthesis of a recent subgrid stabilization method with defect correction methods. The combination is particularly efficient and combines the best algorithmic features of each. We prove convergence of the method for a fixed number of corrections as the mesh size goes to zero and derive parameter scalings from the analysis. We also present some numerical tests which both verify the theoretical predictions and illustrate the method's promise
SIAM Journal on Numerical Analysis

Suggestions

Washout filter based control for the Hodgkin-Huxley nerve cell dynamics
Doruk, Resat Oezguer (2010-01-01)
In this work we present a washout filler based control approach for stabilizing the oscillations in Hodgkin-Huxley type neurons. The oscillations occur due to the bifurcations that arise from the potassium and sodium channel conductance deviations. The MATCONT toolbox software environment was used for analysis of the bifurcation points in conjunction with MATLAB. The simulations of the Hodgkin-Huxley (HH) model at those points are provided to validate the results obtained from, the MATCONT software. Then a ...
Unparticle effects in rare t -> cgg decay
Alıyev, Tahmasıb; Savcı, Mustafa (American Physical Society (APS), 2008-09-01)
In this work the flavor-changing, rare t -> cgg decay induced by mediation of scalar and tensor unparticles is studied. Using the standard model result for the branching ratio of the t -> cgg decay, the parameter space of d(U) and Lambda(U), where the branching ratio of this decay exceeds the one predicted by the standard model, is obtained. Measurement of the branching ratio larger than 10(-9) can give valuable information for establishing unparticle physics.
Microextraction versus exhaustive extraction approaches for simultaneous analysis of compounds in wide range of polarity
Mirnaghi, Fatemeh S.; Gorynski, Krzysztof; Rodriguez-Lafuente, Angel; Boyacı, Ezel; Bojko, Barbara; Pawliszyn, Janusz (2013-11-05)
This article discusses comparison of microextraction versus exhaustive extraction approaches for simultaneous extraction of compounds in wide range of polarity at low and high volumes of sample by comparing solid phase extraction (SPE) and solid phase microextraction (SPME). Here, both systems are discussed theoretically and evaluated based on experimental data. Experimental comparisons were conducted in terms of extraction recovery, sensitivity, and selectivity for the extraction of doping agent compounds ...
Solution of Navier-Stokes Equations Using FEM with Stabilizing Subgrid
Tezer, Münevver; Aydın Bayram, Selma (2009-07-03)
The Galerkin finite element method (FEM) is used for solving the incompressible Navier Stokes equations in 2D. Regular triangular elements are used to discretize the domain and the finite-dimensional spaces employed consist of piece wise continuous linear interpolants enriched with the residual-free bubble (RFB) functions. To find the bubble part of the solution, a two-level FEM with a stabilizing subgrid of a single node is described in our previous paper [Int. J. Numer. Methods Fluids 58, 551-572 (2007)]....
Reduction of Effects of Noise on the Inverse Problem of Electrocardiography with Bayesian Estimation
Serinağaoğlu Doğrusöz, Yeşim; Svehlikova, J.; Coll-Font, J.; Good, W.; Dubois, R.; Van Dam, E.; Macleod, R.S. (2018-09-01)
To overcome the ill-posed nature of the inverse problem of electrocardiography (ECG) and stabilize the solutions, regularization is used. Despite several studies on noise, effect of prefiltering of ECG signals on the regularized inverse solutions has not been explored. We used Bayesian estimation for solving the inverse ECG problem with and without applying various prefiltering methods, and evaluated our results using experimental data that came from a Langendorff-perfused pig heart suspended in a human-sha...
Citation Formats
S. Kaya Merdan and B. Rivière, “Subgrid Stabilized Defect Correction Methods for the Navier–Stokes Equations,” SIAM Journal on Numerical Analysis, pp. 1639–1654, 2006, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/28211.