...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Brazilian journal of chemical engineering >ON THE PERFORMANCE OF DIFFERENT RANS BASED MODELS TO DESCRIBE THE TURBULENT FLOW IN AN AGITATED VESSEL USING NON-STRUCTURED GRIDS AND PIV VALIDATION
【24h】

ON THE PERFORMANCE OF DIFFERENT RANS BASED MODELS TO DESCRIBE THE TURBULENT FLOW IN AN AGITATED VESSEL USING NON-STRUCTURED GRIDS AND PIV VALIDATION

机译：非结构网格和PIV验证的不同RANS模型在搅拌容器中湍流流动性能的研究

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The performances of the Standard κ-ε, RNG, Realizable, κ-ω and RSM turbulence models to describe the behavior of the flow in agitated tank reactors were evaluated. Because most of these tanks have complex geometries, structured meshing schemes are not a practical alternative in engineering. Two particular unstructured meshing schemes composed of either Cartesian Cut-Cell (CC) or Tetrahedral elements were tested in domains larger than 3 million cells. In this work, the blade thickness, which is usually disregarded, was accounted for. The performance of the turbulence models was validated by PIV measurements. A strong dependence on the grid size and the power number was found, with CC grids having good agreement with grids 3.6 Million. The pumping number was independent of the cell number and the values agree with experimental data. The Realizable model resolved with a tetrahedral grid presented the overall best performance.
机译：评价了标准κ-ε，RNG，可实现，κ-ω和RSM湍流模型的性能，以描述搅拌釜反应器中的流动行为。因为这些储罐中的大多数具有复杂的几何形状，所以结构化的网格划分方案并不是工程上的实际替代方案。在大于300万个单元的域中测试了由笛卡尔切单元（CC）或四面体元素组成的两种特定的非结构化网格划分方案。在这项工作中，考虑了通常忽略的叶片厚度。湍流模型的性能通过PIV测量得到验证。发现强烈依赖于电网尺寸和功率数，CC电网与> 360万的电网具有良好的一致性。抽运数量与细胞数量无关，其值与实验数据一致。用四面体网格解析的Realizable模型显示了总体最佳性能。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号