Erosion Modeling Analysis For DWPF MFT/SME Tanks

Erosion Modeling Analysis For Modified DWPF SME Tank

“…Therefore, the global model gives a good approximation to the boundary flow for the current model. Two stages of modeling efforts were made using the same basic solution method as the previous work [2]. One is the global model, which includes the mechanical agitator and tank boundary in the computational domain to evaluate upstream flow field of each coil guide and to estimate overall flow patterns near the boundary of the cooling coil guide under different rotational speeds agitator.…”

“…As established in the previous work [2], the principal mechanism of erosion for a slurry was identified as abrasive wall friction under the current geometrical and operating conditions. This is associated with regions of secondary flow recirculation and regions of high wall shear.…”

“…Ductile material such as stainless steel is damaged by wall mechanism when particles impinge on the ductile surface of the present coil guide at attack angles near 30 o . Previous results [2,3] showed that the primary locations of high erosion due to particle impingement are at the occurrence of sudden change of flow direction, sudden contraction, and flow obstruction. Transport equations that govern slurry flow, and the erosion mechanism established by the previous work [2] were used to evaluate the high erosion sites and the primary cause of erosion damage created by the SME mixing .…”

“…The primary cause of the tank leakage was identified as material degradation due to wear [1,2]. Erosion in the SME has occurred in localized areas around the coil guides.…”

“…In the previous work [2,3] a literature survey was performed to identify the principal mechanisms of wear for a solids laden fluid and to find out what other wear studies and experiments have been done.…”