...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International journal of heat and fluid flow >Simulation and Reynolds stress modeling of particle-laden turbulent shear flows
【24h】

Simulation and Reynolds stress modeling of particle-laden turbulent shear flows

机译：含颗粒湍流剪切流的仿真和雷诺应力建模

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Direct numerical simulation (DNS) is conducted of a homogeneous turbulent shear flow laden with mono-size particles. The dispersed phase is simulated in the Lagrangian frame and the carrier phase is considered in the Eulerian manner. The coupling between the two phases is `two-way' which allows investigation of the effects of the mass loading ratio and the particle time constant on both phases. A new Reynolds stress model (RSM) is developed based on a `two-fluid' methodology in which both the carrier phase and the dispersed phase are considered in the Eulerian frame. Closures are suggested for the unclosed terms (including the pressure-velocity gradient) which manifest the effects of two-way coupling. The results generated by DNS are used to determine the magnitudes of some of the empirical constants appearing in RSM. The final model predictions for all the components of the fluid, the particle, and fluid-particle Reynolds stresses are assessed via detailed comparisons against DNS data.
机译：直接数值模拟（DNS）是对充满单一尺寸颗粒的均匀湍流剪切流进行。在拉格朗日坐标系中模拟了色散相，并以欧拉方式考虑了载流子相。两相之间的耦合是“双向”的，可以研究质量载荷比和粒子时间常数对两相的影响。基于“双流体”方法，在欧拉坐标系中同时考虑载流子相和分散相，开发了一种新的雷诺应力模型（RSM）。对于未闭合项（包括压力-速度梯度），建议闭合，这些项表现出双向耦合的影响。DNS 生成的结果用于确定 RSM 中出现的一些经验常数的大小。通过与 DNS 数据进行详细比较，评估流体、颗粒和流体-颗粒雷诺应力所有成分的最终模型预测。

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