Sphericity electromagnetism valve and trail strobe are separately employed for adjusting entering flux and water deep of pool . piv and ptv are employed to measure velocity field of model in the two cases of 75 and 60 and flow state image house are set correspondingly 在此基础上，使用数字图像处理技术中的piv和ptv ( particletrackingvelocimetry )算法分别测量了射流入水角75度和60度两种情况水垫塘模型流场的速度场，建立了相应的流场流态图像库、速度场库。
