alexa Intelligent Flow Friction Estimation.
Biochemistry

Biochemistry

Journal of Membrane Science & Technology

Author(s): Brki D, ojbai

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Abstract Nowadays, the Colebrook equation is used as a mostly accepted relation for the calculation of fluid flow friction factor. However, the Colebrook equation is implicit with respect to the friction factor (λ). In the present study, a noniterative approach using Artificial Neural Network (ANN) was developed to calculate the friction factor. To configure the ANN model, the input parameters of the Reynolds Number (Re) and the relative roughness of pipe (ε/D) were transformed to logarithmic scales. The 90,000 sets of data were fed to the ANN model involving three layers: input, hidden, and output layers with, 2, 50, and 1 neurons, respectively. This configuration was capable of predicting the values of friction factor in the Colebrook equation for any given values of the Reynolds number (Re) and the relative roughness (ε/D) ranging between 5000 and 10(8) and between 10(-7) and 0.1, respectively. The proposed ANN demonstrates the relative error up to 0.07\% which had the high accuracy compared with the vast majority of the precise explicit approximations of the Colebrook equation.
This article was published in Comput Intell Neurosci and referenced in Journal of Membrane Science & Technology

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