Simulation of Coating Failures on Cathodically Protected Pipelines—Experimental and Numerical Results

Identification of coating defects in cathodically protected underground pipelines

“…Brasil et al [2] also developed experimental and numerical models to analyse cathodically protected buried pipelines with coating failures. Their approach employed a di erent strategy in which the holidays were considered as small coupons very close to the pipe surface.…”

Boundary element simulation of DC stray currents in oil industry due to cathodic protection interference

“…Numerical methods have been demonstrated to be powerful tools in the analysis of corrosion problems in the last two decades [11][12][13][14][15][16][17][18][19][20][21]. Numerical methods applied to corrosion studies have included the finite difference method (FDM), the finite element method (FEM), and the boundary element method (BEM).…”

“…Because of the specific cylindrical shape of pipelines, special 'pipe elements' are used to perform the discretization and to reduce calculation time [11,12]. The use of these elements supposes a uniform, radial current-density distribution [11][12][13][14][15][16][17][18][19][20][21].…”

“…The polarization algorithm used in the program allows for both steady state and transient analysis of a cathodic protection system. The system can predict the current density and the electric potential [11,[14][15][16][17][18][19][20][21].…”

“…In boundary element analysis system (BEASY), complicated 3D geometries can be modeled easily in addition to use a piecewise linearization approach to the non-linear polarization curve, where any polarization curve could be approximated as a combination of a series of small linear segments [11,[13][14][15][16][17][18][19][20][21].…”