ISSN:
1662-8985
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
A numerical simulation of corrosion in a tube is performed with the solution velocity effecttaken into account. A two dimensional tube, the cross-section of which is widening or narrowing withincrease in distance, is considered. The velocity distribution in the tube is calculated with the FiniteVolume Method (Open FOAM), and the derivatives of velocity with respect to the distance from thetube wall is determined at any location of the tube. The corrosion rate of the tube wall is estimatedunder the assumption that the corrosion rate depends on the velocity gradient, i.e. , it is estimated bysolving the Laplace equation under the boundary conditions given with the polarization curvesmeasured under various velocity gradients. The Boundary Element Method (3D-CAFE) is used tosolve the Laplace equation. It is shown that the distribution of corrosion rate, including the maximumcorrosion rate and its location, is different between the widening and narrowing tubes, even if theaverage velocities in the two tubes are equal
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/40/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.33-37.1303.pdf
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