| 测量透明位相物场的激光纹影-散斑干涉系统(英文) |
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| 引用本文： | 束继祖,李建英.测量透明位相物场的激光纹影-散斑干涉系统(英文)[J].实验流体力学,1991(1). |
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| 作者姓名： | 束继祖 李建英 |
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| 作者单位： | 中国科学院力学所
(束继祖)，中国科学院工程热物理所(李建英) |
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| 摘 要： | 本文给出了诊断相位场,如燃烧、对流、自由射流、超声速流场和等离子体等的一种激光纹影-散斑干涉系统。利用这套光学系统可在同一瞬时获得流场的散斑图和与之相应的剪切干涉图。作为实验,对一非定常波动的火焰(本生灯)进行了测试,实验表明用散斑照相术有可能得到密度波动的湍流场的定量结果;作为定量测试,对一沿竖直平板的自然对流,同时应用散斑照相和差纹影干涉术进行了定量分析,其结果的一致性很好。本文最后给出了散斑图的傅氏变换空间滤波的全场类似子纹影干涉图的流场显示照片。
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| 关 键 词： | 激光散斑照相 纹影干涉 自然对流 燃烧 位相物场 |
A LASER SCHLIEREN_SPECKLE INTERFEROMETRY SYSTEM FOR TRANSPARENT PHASE OBJECT FIEID MEASUREMENT |
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| Shu Jizu.A LASER SCHLIEREN_SPECKLE INTERFEROMETRY SYSTEM FOR TRANSPARENT PHASE OBJECT FIEID MEASUREMENT[J].Experiments and Measur in Fluid Mechanics,1991(1). |
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| Authors: | Shu Jizu |
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| Abstract: | A laser schlieren-speckle interferometry system for diagnos-ticating the field of phase object,such as combustion,convection.free-jet,supersonic flow and plasmaetal,is proposed.With this opticalsystem,a specklegram and a shearing interferogram can be taken sim-ultaneously.An unstable,fluctuating Bunsen burner flame is investigated.Theexperiment demonstrates that the quantitative results can be deliveredin a turbulent flow with fluctuating density by means of speckle photog-raphy.A natural convection along a vertical heated plate is investigatedquantitatively by both methods,speckle photography and schlieren inter-ferometry,and a good agreement between the two methods is obtained. |
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| Keywords: | laser speckle photograph schlieren interferometry convection combustion phase object |
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