Show simple item record

dc.contributor.authorPani, Amiya K.
dc.contributor.authorYadav, Sangita
dc.date.accessioned2016-02-25T12:41:27Z
dc.date.available2016-02-25T12:41:27Z
dc.date.issued2010-06-06
dc.identifier.citationPani AK, Yadav S (2010) An hp-local Discontinuous Galerkin Method for Parabolic Integro-Differential Equations. Journal of Scientific Computing 46: 71–99. Available: http://dx.doi.org/10.1007/s10915-010-9384-z.
dc.identifier.issn0885-7474
dc.identifier.issn1573-7691
dc.identifier.doi10.1007/s10915-010-9384-z
dc.identifier.urihttp://hdl.handle.net/10754/597526
dc.description.abstractIn this article, a priori error bounds are derived for an hp-local discontinuous Galerkin (LDG) approximation to a parabolic integro-differential equation. It is shown that error estimates in L 2-norm of the gradient as well as of the potential are optimal in the discretizing parameter h and suboptimal in the degree of polynomial p. Due to the presence of the integral term, an introduction of an expanded mixed type Ritz-Volterra projection helps us to achieve optimal estimates. Further, it is observed that a negative norm estimate of the gradient plays a crucial role in our convergence analysis. As in the elliptic case, similar results on order of convergence are established for the semidiscrete method after suitably modifying the numerical fluxes. The optimality of these theoretical results is tested in a series of numerical experiments on two dimensional domains. © 2010 Springer Science+Business Media, LLC.
dc.description.sponsorshipThe authors gratefully acknowledge the research support of the Department of Science and Technology, Government of India through project No. 08DST012. They also acknowledge Professor Neela Nataraj for her valuable suggestions and help on the numerical experiments. This publication is also based on work supported in part by Award No. KUK-C1-013-04, made by King Abdullah University of Science and Technology (KAUST). Further, the authors thank both the referees for their valuable comments and suggestions.
dc.publisherSpringer Nature
dc.subjectLDG method
dc.subjectMixed type Ritz-Volterra projection
dc.subjectNegative norm estimates
dc.subjectOptimal error bounds
dc.subjectParabolic integro-differential equation
dc.subjectRole of stabilizing parameters
dc.subjectSemidiscrete
dc.titleAn hp-local Discontinuous Galerkin Method for Parabolic Integro-Differential Equations
dc.typeArticle
dc.identifier.journalJournal of Scientific Computing
dc.contributor.institutionIndian Institute of Technology, Bombay, Mumbai, India
kaust.grant.numberKUK-C1-013-04
dc.date.published-online2010-06-06
dc.date.published-print2011-01


This item appears in the following Collection(s)

Show simple item record