期刊文献+

颗粒粒径和气载比改变时湍流调制的变化 被引量:1

Turbulence modulations caused by change of particle size and particle mass loading ratio
原文传递
导出
摘要 采用相多普勒颗粒分析仪(PDPA)测试了两相圆湍射流速度场,研究了颗粒雷诺数较小情况下,粒径和气载比变化时颗粒对气固两相圆湍射流的湍流调制作用.实验结果表明:颗粒粒径的减小或气载比的增加均使颗粒对气相湍流度的削弱作用增强.通过无量纲化的分析,表明颗粒粒径的减小对气相湍流度的削弱程度强于气载比增加时对湍流度的削弱程度. The velocity fields in particle-laden two-phase round turbulent jets were measured by means of phase Doppler particle analyzer(PDPA).The turbulence modulations caused by the change of particle size and particle mass loading ratio were studied under the condition of small particle Reynolds number.The measured results of turbulence intensities show that particles have more pronounced effects on the attenuation of the gas-phase turbulence,if the particle diameter reduces,or the particle mass loading ratio incr...
出处 《航空动力学报》 EI CAS CSCD 北大核心 2009年第8期1818-1823,共6页 Journal of Aerospace Power
基金 国家自然科学基金(50876053 50706021)
关键词 气固两相流 圆湍射流 湍流调制 气载比 粒径 相多普勒颗粒分析仪 gas-solid flow round turbulent jet turbulence modulation particle mass loading ratio particle size phase Doppler particle analyzer(PDPA)
  • 相关文献

参考文献1

二级参考文献8

  • 1Farge M. Wavelet transforms and their applications to turbulence[J]. Annu. Review Fluid Mech. , 1992,24:395-457.
  • 2Marie Farge, Nicholas Kevlahan, Valerie Perrier, Eric Goirand. Wavelet and turbulence [J]. Proceedings of the IEEE, 1996,84, (4) : 639-669.
  • 3Camussi R, GUJ G. Orthonormal wavelet decomposition of turbulent flows:intermittency and coherent structures[J]. J. Fluid Mech. ,1997,348:177-199.
  • 4Bradbury L J S, Khadem A H. The distortion of a jet by tabs[J]. J. Fluid Mech. 1975,70: 800-806.
  • 5Ahuja K K. Mixing enhancement and jet noise reduction through tabs plus ejectors[R]. AIAA 93-4347.
  • 6Zaman K B M Q, Samimy M. Supersonic jet mixing enhancement by delta-tabs[R]. AIAA 92-3548.
  • 7Zaman K B M Q. Streamwise vorticity generation and mixing enhancement in free jet by delta-tabs[R]. AIAA 93-3253.
  • 8姜楠,王振东,舒玮.子波分析辨识壁湍流猝发事件的能量最大准则[J].力学学报,1997,29(4):406-411. 被引量:65

共引文献3

同被引文献8

引证文献1

二级引证文献1

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部