Numerical Estimation of Mixed Convection Heat Transfer of Nannofluids Flowing In Horizontal and an Inclined Concentric Annuli. J. eng. sustain. dev. [Internet]. 2013 Dec. 1 [cited 2024 Jul. 3];17(6):44-66. Available from: https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/1024