Erosion Modeling Analysis For Modified DWPF SME Tank

Erosion Modeling Analysis for SME Tank Cavity

“…The results of this report are consistent with previous results detailed in references [2,3] that were based on the tank geometry. The locations with the highest erosion are at the leading edge of the guide (Region 3 in Table 3), the tank bottom surface at the downstream edge of the eroded cavity region below the coil support, the tank bottom next to the cavity region, the coil guide support, and the upstream lead-in plate.…”

“…The sites of high abrasive erosion and the degree of erosion damage on the bottom of the SME for the flow conditions shown in Table 1 The results demonstrate that when the agitator operates between 65 rpm and 103 rpm, the leading edge of the coil guide will be damaged by erosion, but the maximum wall shear for the tank bottom below the coil support is only about 90 Pa. This is well below the value of about 169 Pa corresponding to serious erosion of the leading-edge component as observed in the recent inspections of the SME vessel coil guide [2]. The present results for several high erosion sites of the cavity model are compared for three different agitator speeds in Table 3.…”

“…The method established in the previous work [2,3] was used to evaluate the potential for erosion in the SME. The computational results from the erosion study were compared to measured erosion in the SME to estimate the potential for continued erosion.…”

“…1, the present model is the same as that used in previous work, except that it includes an eroded cavity as observed by the visual inspection. This is basically the extension of the previous model [2] to evaluate the erosion sensitivities for different cavity sizes and gap distances because of a tilted tank floor. The model was developed to represent the flow field around each coil restraint.…”

“…In the previous work [2,3] the principal mechanism of wear for a solids laden fluid was identified, and the solution methodology was established. The previous results showed a good comparison between the observed erosion sites and the calculated locations of high shear regions, as well as the degree of erosion and the calculated shear stress.…”