每年出版 12 期
ISSN 打印: 1091-028X
ISSN 在线: 1934-0508
Indexed in
NEURAL-NETWORK METAMODELLING FOR THE PREDICTION OF THE PRESSURE DROP OF A FLUID PASSING THROUGH METALLIC POROUS MEDIUM
摘要
The pressure drop across metallic porous mediums is a critical element in cooling aerospace engineering applications. This paper presents a metamodel based on artificial neural networks (ANNs) for estimating the pressure drop through metallic porous media. The ANN is developed using experimental data obtained from an experimental bench, developed at PRISME Laboratory, which ensures the monitoring of temperature, pressure, and mass flow rate in stationary and transient conditions. For each case the gas pressure which crosses the metallic porous material is measured as a function of inlet gas pressure, gas mass flow rate, and temperature. The optimal feedforward ANN architecture with error backpropagation (BPNN) was determined by the cross-validation method. The ANN architecture having 35 hidden neurons gives the best choice. Comparing the modelled values by ANN with the experimental data indicates that the neural-network model provides accurate results. The performance of the ANN model is compared with a metamodelling method using the multilinear regression approximation.
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