EFFIOM, Samuel Oliver; ENOH, Maria Kaka Etete; WILLIE, Godwin Effiong; EFFIOM, Precious-Chibuzo. Numerical and Experimental Investigation of a Vortex Head for Back-Pressure Suppression in Petroleum Pumping Systems. Scientific Journal of Engineering Research, [S. l.], v. 2, n. 2, p. 197–210, 2026. DOI: 10.64539/sjer.v2i2.2026.422. Disponível em: https://journal.futuristech.co.id/index.php/sjer/article/view/422. Acesso em: 18 mar. 2026.