摘要
在矩形水箱内,对水下气体射流环境流场进行了PIV实验研究.聚苯乙烯荧光粒子作为PIV示踪粒子,发射波长为580 nm,经过滤消除了532 nm激光在水中的各类反射.成功捕捉到了气体射流环境场中明显的涡流对,从产生、发展、减弱到消失的完整过程.涡流是射流所诱导的环境流动的基本结构,在射流的法向平面内涡流对是射流作用的主要形式.气体射流对环境流场的作用主要限制在射流段,其作用沿射流轴线快速衰减.
Submerged air jet flow in rectangular tank was investigated by PIV. The polystyrene fluorescent particles were added to the water as the flow tracers, their laser wave length are successfully eliminated after light wavelength is 580 nm. All the reflections caused by the flaser of 532 nm wave length were successfully eliminated after light filtration. Evident anti-coupling swirling in the jet flow field was captured and the whole process of its producing, decaying and disappearing was displayed. Vortex is the basic feature of the flow field caused by the jet. The influence of the jet on the surrounding fluid field is limited in the jet part,which decays quickly along the direction of the jet axial line.
出处
《上海理工大学学报》
CAS
北大核心
2009年第3期218-222,共5页
Journal of University of Shanghai For Science and Technology
基金
上海市重点学科建设资助项目(J50501)
关键词
PIV
流场结构
淹没射流
涡流
particle image velocimetry , PIV
flow field structure
submerged jet
swirl
