PLIF技术测量浓度场及其二维数字校正

CONCENTRATION MEASUREMENT AND ITS TWO-DIMENSIONAL DIGITAL CALIBRATION BY A PLIF TECHNIQUE

推导了ＰＬＩＦ技术测量浓度场时液地内荧光强度的分布，提出了ＰＬＩＦ技术的二维数字校正方程和校正方法来消除激光片光的高斯分布和沿光程衰减的影响．在此基础上，对圆形紊动射流的浓度场进行了测量和校正．此外，还将测量结果与前人的半经验理论进行了分析和比较。

The fluorescence intensity distributions in water tank are obtained for con-centration measurement by a PLIF technique, and a two-dimensional digital calibrationequation and method are then proposed in order to account for the nonuniform distributionand attenuation of intensity of a laser thin. Based on the above,the concentration field ofround turbulent jet is measured and calibrated. Finally, the results of jet are analyzed andcompared with those of the semi-empirical theory.