三维PIV应用于船舶精细流场测试研究进展

摘要

The phenomenon of fine flow field and the flow details have great influences on the field of ship and ocean engineering. The PIV technology successfully records the velocity distribution of multiple space points at the same moment, which provides abundant spatial information of the flow field and the flow char⁃acteristics. Currently, SPIV has found its application internationally in the investigation of massive cross-flow separation in the case of ship and submarine maneuvering as well as the complex viscous phe⁃nomena associated with large-amplitude ship motions in high sea states. Domestically, researchers have ap⁃plied SPIV into the research of the measurement of wake field and the noise field of ships, whose results truthfully reflect the flow characteristics. As SPIV trials are bound to combine with the CFD method in the future, the experimental study of full-scale ships shall also be promoted. It can be safely concluded that with the developments of computer technology, laser technology, and CCD performance, the research and development of the multidimensional measurement SPIV system will become a key research topic in marine engineering.%精细流场作用现象和流动细节对解决船舶与海洋工程领域的疑难问题有重要影响，粒子图像测速（PIV）技术实现了在同一瞬态时刻记录大量空间点上的速度分布信息，可提供丰富的流场空间信息及流动特性。三维粒子图像测速（SPIV）技术在国外已被成功用于研究水面舰船和潜艇在高海况下与船体大幅运动有关的复杂粘性现象及壳体大规模流体分离现象，取得了一定的研究成果；在国内，SPIV技术也已应用于船舶尾流场测量及舰船噪声测量中，试验结果能够真实反映流场特征。未来SPIV试验将与CFD方法相结合，向实船试验研究方向发展。随着计算机技术、激光技术、CCD性能的发展，多方位测量的SPIV系统将是未来重要的研究方向。