...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Fuel >DEM-CFD simulation of the particle dispersion in a gas-solid two-phase flow for a fuel-rich/lean burner
【24h】

DEM-CFD simulation of the particle dispersion in a gas-solid two-phase flow for a fuel-rich/lean burner

机译：富燃料/稀薄燃烧器气固两相流中颗粒分散的DEM-CFD模拟

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

The objective of this study was to nμmerically investigate the particle dispersion mechanisms in the gas-solid two-phase jet for a fuel-rich/lean burner by means of coupling the discrete element method (DEM) with the computational fluid dynamics (CFD). The DEM was employed to deal with the particle-particle and the particle-wall interaction in the computation of solid flow; while gas flow was computed by CFD based on the commercial software package Fluent. The particles with various Stokes nμmbers equal to 0.1, 0.5, 1, 2 and 3 (corresponding to particle diameter 10.8, 24.17, 34.18, 48.38 and 59.21 μm, respec tively) in the gas-solid fuel-rich/lean jet were investigated in this study. The particle-particle collision was simulated and its effect on the fuel-rich/lean separating performance was evaluated. The results show that the particle-particle collision occurred more frequently with the increasing of Stokes nμmbers from 0.1 to 3. The particle dispersion became more uniform between the fuel-rich side and the fuel-lean side for particles with small Stokes nμmber; while for particles at St > 1, a better fuel-rich/lean separating performance was achieved. The efficiency of the DEM-CFD coupling method was validated by the corre sponding experiments, and a good agreement between the simulation and experiments was achieved as a result of the particle-particle collision.
机译：这项研究的目的是通过将离散元方法（DEM）与计算流体动力学（CFD）耦合，对富燃料/稀薄燃烧器的气固两相射流中的颗粒扩散机理进行数值研究。在固流计算中，采用DEM处理颗粒与颗粒之间的相互作用。而气体流量则由CFD根据商业软件包Fluent计算得出。研究了在气固富油/贫油射流中斯托克斯数分别为0.1、0.5、1、2和3的斯托克斯数（分别对应于粒径10.8、24.17、34.18、48.38和59.21μm）的颗粒。这项研究。模拟了颗粒间的碰撞，并评估了其对富油/稀油分离性能的影响。结果表明，随着斯托克斯数从0.1增加到3，颗粒间的碰撞更为频繁。对于斯托克斯数小的颗粒，燃料富集侧和贫油侧之间的颗粒分散变得更加均匀。而对于St> 1的颗粒，则可获得更好的富油/稀油分离性能。通过相应的实验验证了DEM-CFD耦合方法的效率，并且由于粒子间的碰撞，在仿真和实验之间取得了良好的一致性。

著录项

  • 来源
    《Fuel》 |2011年第4期|p.1584-1590|共7页
  • 作者

    Hao Zhou; Guiyuan Mo; Jiapei Zhao; Kefa Cen;

  • 作者单位

    Zhejiang University, Institute for Thermal Power Engineering, State Key Laboratory of Clean Energy Utilization, Hangzhou 310027, PR China;

    Zhejiang University, Institute for Thermal Power Engineering, State Key Laboratory of Clean Energy Utilization, Hangzhou 310027, PR China;

    Zhejiang University, Institute for Thermal Power Engineering, State Key Laboratory of Clean Energy Utilization, Hangzhou 310027, PR China;

    Zhejiang University, Institute for Thermal Power Engineering, State Key Laboratory of Clean Energy Utilization, Hangzhou 310027, PR China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    dem; cfd; gas-solid two-phase flow; fuel-rich/lean burner;

    机译：德姆cfd;气固两相流;燃油丰富/稀薄的燃烧器;

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