首页> 外文期刊>Special topics & reviews in porous media >VALIDATION OF A SUBGRID MODEL FOR POROUS BURNERS SIMULATIONS
【24h】

VALIDATION OF A SUBGRID MODEL FOR POROUS BURNERS SIMULATIONS

机译:用于多孔燃烧器模拟的亚网格模型的验证

获取原文
获取原文并翻译 | 示例
           

摘要

A subgrid model for the flame speed is proposed for the simulation of flow and reaction in porous inert media. The subgrid model relies on the asymptotic structure of the flame presented in a previous work. The asymptotic results are used to build a microscale model for the flame speed as function of the heat recirculation efficiency of the burner. Then a macroscale model is formulated with the volume-averaged conservation equations and a kinematic equation to describe the movement of the flame front (level-set method). Results of a ID simulation of a porous radiant burner are presented to illustrate the method and the model limitations are evaluated. Results show that the proposed model is able to connect the subgrid model with the large-scale problem with heat losses and that better results are obtained when sufficient scales separation is achieved. Multidimensional implementation is also discussed.
机译:提出了火焰速度的子网格模型,用于模拟多孔惰性介质中的流动和反应。子网格模型依赖于先前工作中提出的火焰的渐近结构。渐近结果用于建立火焰速度与燃烧器热循环效率的函数的微尺度模型。然后,用体积平均守恒方程和运动学方程式建立宏观模型,以描述火焰前沿的运动(水平集方法)。给出了多孔辐射燃烧器的ID仿真结果,以说明该方法并评估了模型的局限性。结果表明,所提出的模型能够将子网格模型与具有热损失的大规模问题联系起来,当实现足够的尺度分离时,可以获得更好的结果。还讨论了多维实现。

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