AUTHORS: Kirill Zeyde, Vadim Sharov, Mikhail Ronkin

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ABSTRACT: We give a detailed description of our experimental studies of the electromagnetic dragg effect under the laboratory conditions. Our main goal is to show the criteria for an experiment to the successful observation of a small effect versus noise and errors. We use X-band rectangular waveguide, in the cavity of which a dielectric pipe is placed, in which a flow of liquid is achieved. The S11 parameters of the circuit are measured using a vector network analyzer. The experimental study is divided into three parts: pilot experiment, preliminary experiment, and target experiment. We describe in detail the stages of experiment designing, as well as the algorithm for experimental data processing. Expectations for the experiment results, we get from the semi-analytical solution of a scattering problem. To describe the effect, we apply an adapted strict solution to the electromagnetic waves propagation in moving media. In conclusion, the internal and external validity of the study is discussed. The distinctiveness of the effect is proved, despite the fact that the flow velocities are relatively low and are about 2 and 3 m/s. The frequency band in which it was possible to observe the effect is quite narrow and approximately equal to 1.25% of the X-band. We propose to use the results of our target experiment as initial data for a pilot experiment of our future studies, and as a consequence, the application of the effect in practice, especially in problems of a radio flow measurement and flow velocity profiles reconstruction.

KEYWORDS: Design for experiments, Electromagnetic measurements, Fluid flow measurement, Measurement errors , Microwave propagation, Relativistic effects, Remote monitoring, Transmission line measurements

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