Mass transfer at a pipe inlet zone in relation to impingement corrosion

• Published in: International communications in heat and mass transfer Vol. 25; no. 3; pp. 443 - 451
• Main Authors: Sedahmed, G.H, Abdo, M.S.E, Amer, M, Abd El-Latif, G
• Format: Journal Article
• Language: English
• Published: New York, NY Elsevier Ltd 01-04-1998; Elsevier
• Subjects: Applied sciences; Corrosion; Corrosion mechanisms; Corrosion protection; Diffusion; Dissolution; Equations of motion; Exact sciences and technology; Metals. Metallurgy; Nozzles; Pipe flow; Tube; Theoretical study; Experimental study; Corrosion protection; Reaction rate; Inlet zone; Acidic solution; Mass transfer; Iron chloride; Corrosion; Diffusion coefficient; Copper; Diffusion
• ISSN: 0735-1933; 1879-0178
• DOI: 10.1016/S0735-1933(98)00031-1

Rates of mass transfer required to predict the rate of diffusion controlled corrosion of the inlet zone of a tube fitted with a perpendicular inlet nozzle were studied using the diffusion controlled dissolution of copper in acidified FECl
3. Variables studied were inlet nozzle diameter, solution velocty and physical properties of the solution. The rate of corrosion of the tube inlet zone was found to increase with decreasing inlet nozzle diameter and increasing solution velocity. The mass transfer coefficient of the diffusion controlled corrosion of the tube inlet zone was related to different variables by dimensionless equations. Implications of the present results to the design and protection of pipelines against corrosion in industry is highlighted.