Year: 2012
Type: conference-abstract
Abstract: In this study, evaluation method of the effects of flow field on flow accelerated corrosion (FAC) by steady RANS simulation was investigated. Experimental data of FAC thinning rate, mass transfer coefficient, and RMS of wall shear stress were compared and the shape of distributions of them relatively agreed well each other. It indicated that an analogy between momentum and mass transfer is still useful downstream from the orifice. An orifice flow was simulated numerically by low Re type k-ε model and an evaluation method of RMS value of the wall shear stress, which was employed as an evaluation parameter for FAC, was proposed. The shapes of RMS of wall shear stress by low Re type k-ε model and LES was relatively agreed well with each other, but deviated from the FAC rate distribution at 2D and 3D. The convection diffusion equation of concentration was also solved and the shape of the simulated distribution of mass transfer coefficient agreed with experimental data of mass transfer coefficient.
Institution: Institute of Nuclear Safety System, Inc. (Japan)
Language: English
Subfield: Computational Mechanics
Field: Engineering
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W2668614195