旋涡场

激光－超声方法是通过测量由流动引起的超声脉冲信号在两束或更多来激光之间传递的时间差实现旋涡场测量的。

Our laser - ultrasonic method is better than existing laser methods for measuring flows . So we use our laser - ultrasonic method to measure the vortex field of the flow .

本文从复杂流场-旋涡场参量的激光-超声测试方法的需要出发，论述了超声波产生的声位相光栅对激光产生的衍射及偏转特性。

The properties of diffraction and deflection of laser beem caused by the acoustic phase grating in fluid are described .

旋涡的场特征与物质性&离散涡方法基础

Field and material characteristics of vortex ─ basis of vortex method

旋涡流化床空气动力场和气体混合试验研究

Investigation on Aerodynamical Characteristics and Gas Mixing in a Vortexing Fluidized Bed Freeboard

建立了二维浅水流动的旋涡诱导速度公式，在已知旋涡场和胀量场时，由该表达式可确定流动速度场。

A formula is deduced for the velocity induced by the vortices in two-dimensional shallow water flows and it is used to correct the Biot-Savart law .

然后对此进行涡量和旋涡强度计算，得到相应的涡量场和旋涡强度场。

The vorticity field and swirling strength field were then calculated from the flow structure .