Effiom, Samuel Oliver, Maria Kaka Etete Enoh, Godwin Effiong Willie, and Precious-Chibuzo Effiom. 2026. “Numerical and Experimental Investigation of a Vortex Head for Back-Pressure Suppression in Petroleum Pumping Systems”. Scientific Journal of Engineering Research 2 (2):197-210. https://doi.org/10.64539/sjer.v2i2.2026.422.