| 朱孟府，苗秀娟，邓 橙，谢 炜，宿红波，游秀东，陈 平.不同孔分布孔板的水力空化效果的数值模拟[J].轻工机械,2012,30(4): |
| 不同孔分布孔板的水力空化效果的数值模拟 |
| Numerical Simulation of Hydrodynamic Cavitation Effect of Orifice Plate with Different Layout |
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| DOI： |
| 中文关键词: 水力空化 多孔孔板 数值模拟 水处理 |
| 英文关键词:hydrodynamic cavitation orifice plate numerical simulation water treatment |
| 基金项目: |
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| 摘要点击次数: 2766 |
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| 中文摘要: |
| 基于大型流场计算软件FLUENT，选用标准κ-ε双方程湍流模型，针对多孔孔板水力空化器中圆形阵列、圆形均布和水平均布3种孔分布方式，对孔板汽含率、湍动能及流线速度矢量分布图等水力空化效果进行了数值模拟计算。结果表明，水平均布多孔孔板的空化效果优于圆形阵列和圆形均布多孔孔板，圆形均布孔板空化效果好于圆形阵列孔板；孔的分布方式对流速影响不大，但对孔板后临近壁面处漩涡产生的位置及数量有影响；空化大部分发生在孔板小孔内流域中，且高汽含率区域发生在孔板末端。 |
| 英文摘要: |
| Based on FLUENT large scale flow field calculation software and standard κ-ε turbulence model, the numerical simulation of hydrodynamic cavitation effect of three kinds of orifice plates —— circular array, circular uniform distribution and horizontal uniform distribution —— was studied, and the vapor fraction, turbulent kinetic energy and the flow velocity vector distribution figure were obtained. The results showed that the cavitation effect of average uniform orifice plate was better than circular array and circular uniform, and the cavitation effect of circular uniform orifice plate was better than circular array. Orifice layout had little effect on the flow, but had impact on the location and number of vortex generated at near the wall of the orifice plate. Most of the cavitation effect occurred within the orifice in the plate, and the high gas fraction region was took place at the end of orifice plate. |
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