Retraction notice to MHD forced convection flow of nanofluid in a porous cavity with hot elliptic obstacle by means of Lattice Boltzmann method [International Journal of Mechanical Sciences Volume 135 (2018) 532–540](S0020740317327625)(10.1016/j.ijmecsci.2017.12.005)

This article has been retracted: please see Elsevier Policy on Article Withdrawal (https://www.elsevier.com/about/our-business/policies/article-withdrawal). This article has been retracted at the request of the Editors-in-Chief. The article duplicates significant parts of a paper that had already appeared in the Journal of Molecular Liquids 249 (2018) 941–948 https://doi.org/10.1016/j.molliq.2017.10.099. Also, Figure 2b of the article is similar with Figure 2 of the paper that was published by the first author et al in Physica A 417 (2015) 273–286 http://dx.doi.org/10.1016/j.physa.2014.09.053. Moreover, the references [26]–[58] of this article were not requested by the handling Editors and reviewers and were added during the revision process without notifying the Editor and reviewers. One of the conditions of submission of a paper for publication is that authors declare explicitly that the paper has not been previously published and is not under consideration for publication elsewhere. Re-use of any data should be appropriately cited. As such this article represents a misuse of the scientific publishing system. The scientific community takes a very strong view on this matter and apologies are offered to readers of the journal that this was not detected during the submission process.