The Effect of Time and Corrosion Products Formation on Corrosion Rate of Carbon Steel Pipe Under Turbulent Flow Conditions
DOI:
https://doi.org/10.31699/IJCPE.2007.4.10Keywords:
corrosion, carbon steel, time, corrosion product, friction factor, analogy.Abstract
The effect of time (or corrosion products formation) on corrosion rates of carbon steel pipe in aerated 0.1N NaCl
solution under turbulent flow conditions is investigated. Tests are conducted using electrochemical polarization
technique by determining the limiting current density of oxygen reduction in Reynolds number range of 15000 to 110000
and temperature range of 30 to 60oC. The effect of corrosion products formation on the friction factor is studied and
discussed. Corrosion process is analyzed as a mass transfer operation and the mass transfer theory is employed to
express the corrosion rate. The results are compared with many proposed models particularly those based on the
concept of analogy among momentum, heat, and mass transport. The capability of these models to predict corrosion
rates in presence of corrosion products is examined and discussed. It is found that formation of corrosion products with
time decreases the corrosion rate (or mass transfer rate) at low Reynolds number and temperature while it increases the
corrosion rate at high Re and temperature. It increases momentum transport and this increase depends on temperature,
Reynolds number, and corrosion rate. Increasing roughness due to the formation of corrosion products causes
overestimation of analogy correlations results by increasing friction factor and decreasing corrosion rate.
References
J. Marangozis, corrosion, Vol.24, No. 8, P. 255, 1968.
B.T Ellison and W. R. Schmeal, J. Elerctchem. Soc., Vol. 125, No. 4, P. 524,1978.
B. K. Mahato, C. Y. Cha, and W. Shemlit, Corros. Sci., Vol. 20, P. 421, 1980.
N.R.K. Vilambi and D.T. Chin, Electchem. Soc., Vol.134, No.1, P.2501, 1982
B. Poulson and R. Robinson, Corr. Sci., Vol. 26, No.4, P. 265, 1986. Series, Leonard Hill Book Co., 1966.
Qasim.J. Slaiman and B.O. Hassan, Baghdad, Journal of Engineering, No.4 , Vol. 11, 2005.
B.K. Mahato, F.R. Stewrd, and L. W. Shimlit, Corrs. Sci. Vol.8, P.737, 1968
B. K. Mahato, S. K. Voora and L.W. Shemilt, Corros. Sci., Vol.8, P. 173, 1968
D. J. Pickett and K. L. Ong, Electchmica Acta, Vol. 19, P.875, 1974.
M. A. Atia, Ph.D. Thesis, Dept. Chem. Eng., Saddam University, Baghdad, 1996.
J. G. Knudsen and D. L. Katz, Fluid Dynamics and Heat Transfer, Mc Graw Hill, New York, 1958.
B. S. Petukhov, Heat Transfer and Friction in Turbulent Pipe Flow with Variable Physical Properties, Advances in Heat Trans., Vol. 6, P. 503, 1970.
A. P Colburn, Trans. AICHE, Vol. 29, P. 174, 1933. Republished in: J. Heat Mass Transfer, Vol.7, P. 139, 1964.
S. G. Kandilkar, S. Joshi, S. Tian, Heat Transfer for Conference, 35th National, AMSE, California, 2001.
J.W. Smith and N. Epstein, Effect of Wall Roughness on Convective Heat transfer in Commercial Pipes, A.I.Ch.E. J., vol. 3, No. 2, 1957.
B. Pinkel, Cleveland, and Ohio, AMSE, February, P.305, 1954.
A. Dawnson and O. Trass, Int. J. Heat Mass Trans., Vol.15, P.1317, 1972.
V. Kolar, , Int. J. Heat Mass Trans., Vol. 8, P. 639, 1965.
R. E. Acosta.R.H. Muller, and C.W Tobias, AICHE, Vol. 31, No.3 P.473, 1985.
N. L. Vuichanov and V. D. Zimparer, J. Heat Mass Transfer, Vol. 32, P. 29, 1988
F.F. Moody,Trans. ASME, Vol. 66, P.671,1944.
R. S. Brodkey and H. C. Hershey, Transport Phenomena, 2nd Printing, Mc Graw Hill, New York, 1989.
J. M. Coulson and J. F. Richardson, Chemical engineering, 5th Edition, Butter Worth Heinemann, Britain, 1998.
D.F. Dipprey and R.H. Sabersky, Heat and Momentum Transfer In Smooth and Rough Tubes at Various Prandtl Numbers, Heat Mass Transfer, Vol. 6, P.329, 1963.
.F.Douglas and R.D. Matthews, Solving Problems in fluid Mechanics, Vol.2, 3 rd Ed., Longaman, England, 1998.
J. R. Welty, C. E. Wicks, and G. Rorrer, Fundamentals of Momentum, Heat, and Mass Transfer, 4th Edition, John Wiley and Sons, United States of America, 2001.
C. O. Bennett and J. E. Myers, Momentum, Heat and Mass Transfer, 3rd Edition, Mc Graw Hill, United States, 1982.
W. J. Thomson, Introduction to Transport Phenomena, 1st Edition, Prentice Hall PTR, New Jersey, 2000.
C. S. Lin, R. W. Moulton, and G.L. Putnam et al, Ind. Eng. Chem.,Vol.45, P. 636, 1953.
U.R. Evans, and T.P. Haoar, Proc. Roy. Soc, London, (series A), Vol. 137, P.343, 1932.
F.B.Berger and K.F. Hau, Int. J. Heat Mass Trans., Vol.22, P.1645, 1979.
M. N. Ozisk, Heat Transfer, 3rd Edition, McGraw Hill, New York, 1988.
Von Karman, Trans. ASME, Vol. 61, P. 5, 1939.
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