クロスフローファンの内部流れの数値解析 : CIC (Clouds-in-Cells)法とFEMの適用

概要

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A suitable simulation scheme for simulating the internal flow of a cross-flow fan was developed. In this scheme, the impeller is treated as an actuator disk which restricts the flow direction and supplies vorticity to the flow. The continuous vorticity distribution is replaced by a finite set of point vortices and calculated by the CIC (clouds-in-cells) method which is combined with FEM instead of FDM (finite-difference method) so that nonstructual meshes can be used. We applied this scheme to simulate the internal flow of a room air conditioner incorporating a cross-flow fan, and the results show good agreement with the experimental data. It is of particular interest that this model is effective to simulate the secondary vortex which sometimes appears at the position opposite to the main vortex on the impeller.
社団法人日本機械学会の論文
1992-01-25