On the refractive index of sodium iodide solutions for index matching in PIV

被引:85
作者
Bai, Kunlun [1 ]
Katz, Joseph [1 ]
机构
[1] Johns Hopkins Univ, Dept Mech Engn, Baltimore, MD 21218 USA
关键词
PARTICLE IMAGE VELOCIMETRY; CONCENTRATED ELECTROLYTE-SOLUTIONS; LASER-DOPPLER VELOCIMETRY; FLOW STRUCTURE; CHANNEL FLOW; VISCOSITY; VISUALIZATION; TEMPERATURE; DEPENDENCE; TURBULENCE;
D O I
10.1007/s00348-014-1704-x
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
Refractive index matching has become a popular technique for facilitating applications of modern optical diagnostic techniques, such as particle image velocimetry, in complex systems. By matching the refractive index of solid boundaries with that of the liquid, unobstructed optical paths can be achieved for illumination and image acquisition. In this research note, we extend previously provided data for the refractive index of aqueous solutions of sodium iodide (NaI) for concentrations reaching the temperature-dependent solubility limit. Results are fitted onto a quadratic empirical expression relating the concentration to the refractive index. Temperature effects are also measured. The present range of indices, 1.333-1.51, covers that of typical transparent solids, from silicone elastomers to several recently introduced materials that could be manufactured using rapid prototyping. We also review briefly previous measurements of the refractive index, viscosity, and density of NaI solutions, as well as prior research that has utilized this fluid.
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页数:6
相关论文
共 27 条
[11]   INFLUENCE OF IONIC ASSOCIATION ON THE B COEFFICIENT OF THE JONES-DOLE EQUATION FOR NAI IN WATER TERT-BUTYL ALCOHOL MIXTURES AT 26-DEGREES-C [J].
KACPERSKA, A ;
TANIEWSKAOSINSKA, S ;
BALD, A ;
SZEJGIS, A .
JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS I, 1989, 85 :4147-4155
[12]  
LENGYEL S, 1964, ACTA CHIM HUNG, V40, P125
[13]   A simple model for the refractive index of sodium iodide aqueous solutions [J].
Narrow, TL ;
Yoda, M ;
Abdel-Khalik, SI .
EXPERIMENTS IN FLUIDS, 2000, 28 (03) :282-283
[14]   FLUORESCENT PARTICLE IMAGE VELOCIMETRY - APPLICATION TO FLOW MEASUREMENT IN REFRACTIVE INDEX-MATCHED POROUS-MEDIA [J].
NORTHRUP, MA ;
KULP, TJ ;
ANGEL, SM .
APPLIED OPTICS, 1991, 30 (21) :3034-3040
[15]   Evaluation of flow structure in packed-bed tube by visualization experiment [J].
Okumura, M ;
Yuki, K ;
Hashizume, H ;
Sagara, A .
FUSION SCIENCE AND TECHNOLOGY, 2005, 47 (04) :1089-1093
[16]   An investigation of turbulent Taylor-Couette flow using laser Doppler velocimetry in a refractive index matched facility [J].
Parker, J ;
Merati, P .
JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME, 1996, 118 (04) :810-818
[17]  
Shida S, 2011, P ASME COL US
[18]   A large-scale matched index of refraction flow facility for LDA studies around complex geometries [J].
Stoots, C ;
Becker, S ;
Condie, K ;
Durst, F ;
McEligot, D .
EXPERIMENTS IN FLUIDS, 2001, 30 (04) :391-398
[19]   Coherent structures in the inner part of a rough-wall channel flow resolved using holographic PIV [J].
Talapatra, Siddharth ;
Katz, Joseph .
JOURNAL OF FLUID MECHANICS, 2012, 711 :161-170
[20]   Unobstructed particle image velocimetry measurements within an axial turbo-pump using liquid and blades with matched refractive indices [J].
Uzol, O ;
Chow, YC ;
Katz, J ;
Meneveau, C .
EXPERIMENTS IN FLUIDS, 2002, 33 (06) :909-919