Improvement of the five-hole probe calibration using artificial neural networks
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Journal Title
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Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Author
Date
2022-08
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Language
en
Pages
13
Series
Flow Measurement and Instrumentation, Volume 86
Abstract
In the present study, the artificial neural networks (ANNs) technique was implemented to link non-dimensional pressure coefficients and flow characteristics to calibrate a five-hole probe. The experimental data of this work were obtained from a subsonic open-circuit wind tunnel at the velocity of 10 m/s. Here, the efficiency of ANNs was compared with two conventional data reduction methods, including linear interpolation technique and 5th-order polynomial surface fit algorithm. Based on the statistical parameters of calibration data, it was concluded that the radial basis function (RBF) algorithm was more accurate and had more flexibility compared to the multi-layer perceptron (MLP) regression algorithm, the linear interpolation and 5th-order polynomial methods. In the RBF method, the mean absolute errors of 0.11, 0.64, 0.02 and 0.03 were achieved for α, β, Cpt and Cps, respectively. Furthermore, the effects of training data reduction and data selection on the performance of RBF were studied. The accuracy of the proposed RBF method was analyzed at different α angles and for random test data. Finally, the influence of increasing number of test data on the efficiency of calculated RBF method was evaluated.Description
Publisher Copyright: © 2022 The Authors
Keywords
Artificial neural networks, Calibration, Data reduction, Five-hole probe, Radial basis function, Wind tunnel
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Citation
Fathi, S & Sadeghi, H 2022, ' Improvement of the five-hole probe calibration using artificial neural networks ', Flow Measurement and Instrumentation, vol. 86, 102189 . https://doi.org/10.1016/j.flowmeasinst.2022.102189
