利用PIV技术研究搅拌槽内的流动特性

Application of PIV for measurement of flow field in stirred tank

粒子成像测速(PIV)技术是一种新型的流动测量手段,使用这种技术能够容易地得出流场中的速度分布情况.在此基础上进行深入分析,还可以得到许多十分重要的流动参数.利用PIV技术测量长方形水槽模型中磁力搅拌器产生的搅拌流场,得到了不同断面的二维流场内的速度分布和涡量分布,通过对实验数据的分析研究,进一步得到水槽内流线和涡量的变化规律.

PIV is a new technique of flow measurement. The flow velocity in the full range was obtained using this technique. Moreover, other important parameters can be got after further analysis. The technique of particle image velocimetry was used for the quantitative measurement of the flow field in stirred tank. The velocity maps and vorticity maps of the different side in 2-dimension flow field were also obtained by PIV technique, while the varing rules of streamline and vorticity were found by further analyzing the experiment data.