圧縮性二流体モデルによる気液二相流の数値解析(流体工学, 流体機械)

概要

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Analysis of compressible gas-liquid two-phase flow is important in various industrial fields. A new numerical method of the compressible two-fluid model is developed. An approximate treatment of the Riemann invariance, which is necessary to treat the relationship between discontinuities of pressure and velocity in highly compressible flow, is introduced to the two-fluid model calculation. Two-phase volumetric velocity and mixture sound speed are adopted in the Godunov scheme for solving the Riemann invariance in two-phase flow. This technique is employed in the finite volume method for two-fluid model calculations and the calculated speed of sound is in good agreement with the theoretical one. The present method is applied to analysis of experiments of pressure wave propagation in a pipe filled with water and two-phase mixture. Predicted pressure responses from axial one dimentional analysis in the pipe are in good agreement with the experimental data.
社団法人日本機械学会の論文
2002-09-25