Synthetic Turbulence Model and Its Application for Ultrasonic Cross-correlation Flow Measurement

Abstract

In this paper, a new method of generating synthetic turbulence is presented, to provide an effective tool for creating a variety of turbulent fields, which can be used to model and analyze instrument performance under different flow conditions. In the proposed method, a turbulent field is presented as a Fourier time-series in each point in space. Turbulent structures are defined by a spatial distribution of phase functions for each harmonic. Results predicted by the mathematical model show good agreement with experimental data. Application of this model for ultrasonic cross-correlation flow measurement, used in nuclear power plants, is also presented and discussed.