基于超声层析成像技术的三维流场重建  

Reconstruction of three dimensional flow field based on ultrasonic tomography technique

作　　者：王浩源[1] 王伯雄[1] 柳建楠[1] 崔园园[1] 

机构地区：[1]清华大学精密仪器系精密测试技术及仪器国家重点实验室,北京100084

出　　处：《传感器与微系统》2016年第1期72-75,共4页Transducer and Microsystem Technologies

基　　金：国家自然科学基金资助项目(11274199)

摘　　要：在现有的以超声层析成像为基础的流场重建方法中,一般只能单独重建横向流场或轴向流场。为能够同时获得横向和轴向流场的信息,提出一种方法,通过在圆管周围合理布置超声换能器,采用联合代数迭代重建算法同时得到圆管中的横向流场和轴向流场的重建图像,完成圆管中流场的三维重建。实际的单弯管实验成功重建了横向流场和轴向流场表明方法可靠。In existed methods of flow field reconstruction based on ultrasonic tomography, it can only reconstruct transverse flow field distribution or axial flow field distribution at a time. To get the information of both transverse flow field and axial flow field at the same time, a new method is proposed. By reasonable arrangement of ultrasonic transducers around circular pipe and using the simultaneous algebraic reconstruction technique （SART）, transverse and axial flow fields can be reconstructed simultaneously to get reconstructed three-dimensional flow field. It shows that the new method is reliable as the transverse and axial flow field are reconstructed successfully in the reconstruction experiment with practical single-bend pipe experiment.

关 键 词：超声层析成像技术 三维流场 联合代数迭代重建算法 

分 类 号：TB559[理学—物理] TP391[理学—声学]