Synthetic Turbulence Modeling for Evaluation of Ultrasonic Cross-Correlation Flow Measurement
Performance of an ultrasonic cross-correlation flow measurement instrument may be significantly affected by turbulence at the location of the ultrasonic sensors. 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. Turbulence structures are defined by a spatial distribution of phase functions for each harmonic. Principles of designing a phase function to achieve the desirable distribution of turbulence scales, and two-point correlations, are outlined by considering the example of Uniform Isotropic Turbulence. One application of this method, presented in this work, is the mathematical modeling of ultrasonic cross-correlation flow measurement. Results predicted by the proposed mathematical model show good agreement with experimental data.
The file attached to this record is the author's final peer reviewed version. The Publisher's final version can be found by following the DOI link
Citation : Gurevich, A., Goman, M., Gurevich, Y.G. and Lopez, A.M. (2017) Synthetic Turbulence Modeling for Evaluation of Ultrasonic Cross-Correlation Flow Measurement. Flow Measurement and Instrumentation,
ISSN : 0955-5986
Research Group : Engineering and Physical Sciences Institute (EPsi)
Peer Reviewed : Yes