文献类型：期刊文献

中文题名：平面撞击流振荡特性

英文题名：Oscillation characteristics of two planar opposed jets

作者：孙志刚[1];李伟锋[1];刘海峰[1];于遵宏[1]

机构：[1]华东理工大学煤气化教育部重点实验室,上海200237

年份：2009

卷号：60

期号：2

起止页码：338

中文期刊名：化工学报

外文期刊名：CIESC Journal

收录：CSTPCD;;EI(收录号：20091011946571);Scopus;北大核心:【北大核心2008】；CSCD:【CSCD2011_2012】；

基金：国家重点基础研究发展计划项目(2004CB217703);教育部长江学者与创新团队发展计划项目(IRT0620)~~

语种：中文

中文关键词：平面喷嘴;振荡特性;撞击流;烟线法;流场显示

外文关键词：planar nozzles; oscillation characteristic; opposed jets; smoke wire technique; flow visualization

摘要：The oscillation characteristics of two planar opposed jets were studied by using high-speed camera,smoke wire visualization and hot-wire anemometry(HWA).The oscillation periods of two planar opposed jets at different nozzle separations and exit nozzle velocities were studied.The results showed two models of instabilities:streamwise quasi-periodic oscillation model and deflection oscillation model.The oscillation model was mainly streamwise quasi-periodic oscillation model at L<5H(where L was the nozzle separation and H was the nozzle slot height),and it was mainly deflection oscillation model at L>5H.The deflection oscillation model had a stable period which decreased with increasing normalized nozzle separation.
The oscillation characteristics of two planar opposed jets were studied by using high-speed camera, smoke wire visualization and hot wire anemometry （HWA） . The oscillation periods of two planar opposed jets at different nozzle separations and exit nozzle velocities were studied. The results showed two models of instabilities, streamwise quasi-periodic oscillation model and deflection oscillation model. The oscillation model was mainly streamwise quasi-periodic oscillation model at L〈5H （where L was the nozzle separation and H was the nozzle slot height）, and it was mainly deflection oscillation model at L〉5H. The deflection oscillation model had a stable period which decreased with increasing normalized nozzle separation.