Natural Convection Heat Transfer Enhancement Of Power Law Fluid In A Cylindrical Gap Using Internal Flat Tube. International Journal of Environmental Sciences, [S. l.], p. 1991–1998, 2025. DOI: 10.64252/3gng2b85. Disponível em: https://theaspd.com/index.php/ijes/article/view/4697.. Acesso em: 8 aug. 2026.