固液混相乱流時のエルボを含む管路壁面摩耗量の数値予測

概要

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This paper presents a definite prediction method of crosion in a conduit, consisting of an elbow, due to the impingement of solid particles entrained in flowing water. Owing to high speed movement of the particles, the erosion can be assumed to be caused by deformation and cutting wear as discussed thoroughly by Bitter. To obtain the precise impinging velocities, the fluid flow is evaluated by using a widely adopted κ-ε tarbulence model and a two-way coupling Lagrangian method to take the mutual interference between the two phases into account. The predicted erosion of the elbow due to the particles agrees well with those observed. The predicted wear rate are also compared with the results of one-way turbulent and potential flows, to demonstrate the effects of turbulence and particlefluid interaction.
社団法人日本機械学会の論文
1998-08-25