Entropy production and mixed convection within trapezoidal cavity having nanofluids and localised solid cylinder.

The graph illustrates that the Bejan number showed an increasing trend for all radius sizes except for \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$R=0.25$$\end{document} R

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