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Approaches to the Numerical Estimates of Grid Convergence of NSE in the Presence of Singularities

  • Chenguang Zhang and Krishnaswamy Nandakumar EMAIL logo
Published/Copyright: June 5, 2018

Abstract

Evaluating the order of accuracy (order) is an integral part of the development and application of numerical algorithms. Apart from theoretical functional analysis to place bounds on error estimates, numerical experiments are often essential for nonlinear problems to validate the estimates in a reliable answer. The common workflow is to apply the algorithm using successively finer temporal/spatial grid resolutions δi, measure the error \isini in each solution against the exact solution, the order is then obtained as the slope of the line that fits (log\isini,logδi). We show that if the problem has singularities like divergence to infinity or discontinuous jump, this common workflow underestimates the order if solution at regions around the singularity is used. Several numerical examples with different levels of complexity are explored. A simple one-dimensional theoretical model shows it is impossible to numerically evaluate the order close to singularity on uniform grids.

MSC 2010: 65N08; 65N15

References

[1] P. Shankar and M. Deshpande, Fluid mechanics in the driven cavity. Annual review of fluid mechanics. 32 (2000), 93–136.10.1146/annurev.fluid.32.1.93Search in Google Scholar

[2] J. Shen, Hopf bifurcation of the unsteady regularized driven cavity flow. Journal of computational physics. 95 (1991), 228–245.10.1016/0021-9991(91)90261-ISearch in Google Scholar

[3] The OpenFOAM Foundation, 2018. OpenFOAM: open source field operation and manipulation library. URL http://www.openfoam.org/Search in Google Scholar

[4] M. Abramowitz and I.A. Stegun, Handbook of mathematical functions with formulas, graphs, and mathematical tables, Courier corporation. 1964.Search in Google Scholar

[5] G.K. Batchelor, An introduction to fluid dynamics. Cambridge university press. 631, 1967.Search in Google Scholar

[6] X. Nie, M.O. Robbins and S. Chen, Resolving singular forces in cavity flow: multiscale modeling from atomic to millimeter scales. Phys. Rev. Lett. 96 (2006), 2.10.1103/PhysRevLett.96.134501Search in Google Scholar PubMed

Received: 2017-01-19
Accepted: 2018-02-02
Published Online: 2018-06-05
Published in Print: 2018-06-26

© 2018 Walter de Gruyter GmbH, Berlin/Boston

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