AUTHOR= Frontiers Editorial Office 

TITLE=Retraction: FEM analysis of the impact of surface undulations on the natural convective flow of viscous fluid in a permeable trapezoidal enclosure

JOURNAL=Frontiers in Physics

VOLUME=11

YEAR=2023

URL=https://www.frontiersin.org/journals/physics/articles/10.3389/fphy.2023.1323308

DOI=10.3389/fphy.2023.1323308

ISSN=2296-424X