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内二次风旋流强度对PAX燃烧器出口流场的影响
引用本文:石伟,周志军,周俊虎,赵翔,曹欣玉,岑可法.内二次风旋流强度对PAX燃烧器出口流场的影响[J].动力工程,2003,23(1):2168-2172.
作者姓名:石伟  周志军  周俊虎  赵翔  曹欣玉  岑可法
作者单位:浙江大学,热能工程研究所,能源清洁利用与环境工程教育部重点实验室,杭州,310027
摘    要:使用重整化解(RNG-ASM模型,对PAX燃烧器的出口流场进行了冷态数值模拟,研究了内二次风旋流强度对PAX燃烧器的流场分布,回流区大小,回流量和扩展角的影响规律,并与试验结果进行了对比,获得了比较一致的结果,为PAX燃烧器的设计和运行提供了一定的理论基础,并进一步验证了RNG-ASM模型在模拟强旋转受限射流流场的准确性。

关 键 词:旋流强度  PAX燃烧器  数值模拟  锅炉  RNG-ASM模型  重整化群ASM模型
文章编号:1000-6761(2003)01-2168-05

Study of the Effects of Swirling Number of Inner Secondary Air on Air Flow Field of PAX Burner
SHI Wei,ZHOU Zhi jun,ZHOU Jun hu,ZHAO Xiang,CAO Xin yu,CEN Ke fa.Study of the Effects of Swirling Number of Inner Secondary Air on Air Flow Field of PAX Burner[J].Power Engineering,2003,23(1):2168-2172.
Authors:SHI Wei  ZHOU Zhi jun  ZHOU Jun hu  ZHAO Xiang  CAO Xin yu  CEN Ke fa
Abstract:With the Renormalization Group Algebraic Stress Model (RNG ASM), a cold numerical simulation of the flow field of PAX burner is carried out. In this paper, the effects of inner secondary air on the air flow field of PAX burner, the dimension of recirculation zone, the quantity of recirculation and the jet flow expand angle are studied and some practical laws are obtained. The calculation results accord with the test ones well. This paper further validates the precision of RNG ASM model in simulation the confined strongly swirling flow. And it is believed that the results can be helpful to the design and operation of PAX burner. Figs 8, tables 2 and refs 10.
Keywords:swirling number  PAX burner  numerical simulation  renormalization group algebraic stress model (RNG  ASM)
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