Ultrasound Technique for Prediction of Statistical Characteristics of Grid-Generated Turbulence

Ultrasonic technique can be used to determine some characteristics of turbulent flows. In this work, measurements of the difference in propagation times of ultrasonic waves along two paths are combined with the Kolmogorov (2/3)-power law to study characteristics of grid-generated turbulence. The paper focuses on ultrasonic measurements of turbulent flow using the travel-time technique. The theoretical analysis is based on the well-known Kolmogorov theory and supported by experimental data. The present research is of interest from two points of view. First, it demonstrates a non-invasive method of investigation of turbulence, and second, it furthers understanding of the effect of turbulence on sound propagation.

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