CAJ | 학술논문

平面激光诱导荧光（ PLTF）用于测量流体流动过程的浓度场，混合流体的浓度和温度及示踪物质的浓度都会对结果产生影响。为了把PLTF方法用于黏性流体的混合研究，设计实验用以探究混合流体的浓度和温度及示踪物质的浓度这些因素对PLTF结果的影响。在实验中罗丹明B（ Rhodamine B）作为荧光染料，氩离子激光器作为激光光源。流体黏度、流体温度、罗丹明B的浓度在实验中可相应改变用以研究这些改变对荧光强度的影响，比如流体黏度从1 mPa·s增加至200 mPa·s。CCD照相机用以作数字图像采集，采得的图像作数字图像处理。混合液装于密封良好的3.5 mL的玻璃容器中，玻璃容器放置于可控温度的水浴中以控制混合流体温度。结果表明：溶液黏度增加使得荧光光强增加，温度增加使得荧光光强减弱，在溶液黏度从1~200 mPa·s范围内，荧光光强与染色剂浓度成正比，所以PLTF能用于测量黏度从1~200 mPa·s范围内的流体混合现象。
평면격광유도형광（ PLTF）용우측량류체류동과정적농도장，혼합류체적농도화온도급시종물질적농도도회대결과산생영향。위료파PLTF방법용우점성류체적혼합연구，설계실험용이탐구혼합류체적농도화온도급시종물질적농도저사인소대PLTF결과적영향。재실험중라단명B（ Rhodamine B）작위형광염료，아리자격광기작위격광광원。류체점도、류체온도、라단명B적농도재실험중가상응개변용이연구저사개변대형광강도적영향，비여류체점도종1 mPa·s증가지200 mPa·s。CCD조상궤용이작수자도상채집，채득적도상작수자도상처리。혼합액장우밀봉량호적3.5 mL적파리용기중，파리용기방치우가공온도적수욕중이공제혼합류체온도。결과표명：용액점도증가사득형광광강증가，온도증가사득형광광강감약，재용액점도종1~200 mPa·s범위내，형광광강여염색제농도성정비，소이PLTF능용우측량점도종1~200 mPa·s범위내적류체혼합현상。
The tests of accuracy were carried out in order to adapt planar laser induced fluorescence( PLTF)to various viscous fluids and flows. The aim is to measure concentration field in case of mixing with viscous fluids. The influence of increasing viscosity parameter on fluorescence intensity was described in case of using Rhodamine B dye and Argon ion laser illumination. Tt concluded that the influences of the tested illumination laser was intensity, Rhodamine B dye concentration levels,temperature and viscosity on fluoresced intensity. These tests were developed with the objective of better describing the mixing flow in case of various viscous fluids. For this work an argon Ton laser was used as illumination and CCD camera used for digital image treatment and analysis. Rhodamine B dye was used and added to different solutions of increasing viscosities from 1 to 200 mPa·s. Temperature was controlled and modified with the help of a water bath whereas mixtures were enclosed in 3 . 5 ml glass cells which were perfectly sealed. Result shows fluorescence intensity is increased with the increase of viscosity of solution,while decreased with the increase of temperature. Tt is shown that the fluorescence intensity is linear with the concentration of Rhoda-mine B dye in the range of viscosities from 1 to 200 mPa·s. Tt is concluded that PLTF can be used in the measure-ment of mixing of viscous flows.