液态金属中谐波和瞬态eddy currents时空分布的测量
Measurement of the spatio-temporal distribution of harmonic and transient eddy currents in a liquid metal
摘要：
通过测量一个简单的电位探针中的电压降，确定了位于励磁线圈上方的液态金属中的谐波和瞬态涡流。所得到的时空涡流场进行了比较与相应的解析表达式的导电半空间。此外，涡流分布的变形，由于一个不导电的环面浸入液体金属的测量和数值结果进行比较。该方法可以推广到任意的几何形状，并可能有助于验证无损检测和磁感应成像的数值模型。
英文摘要：
Harmonic and transient eddy currents in a liquid metal positioned above an excitation coil are determined by measuring the voltage drop in a simple potential probe. The resulting spatio-temporal eddy current field is compared with the corresponding analytical expressions for a conducting half-space. Further, a deformation of the eddy current distribution due to a non-conducting torus immersed into the liquid metal is measured and compared with numerical results. The method can be generalized to arbitrary geometries, and might help to validate numerical models for non-destructive testing and magnetic inductance tomography.
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