This paper presents the application of artificial neural network (ANN) in prediction of heat transfer coefficients (HTCs) of two-phase flow of air–water in a pipe in the horizontal and slightly upward inclined (2, 5, and 7 deg) positions. For this purpose, the superficial liquid and gas Reynolds numbers and the inclination of the pipe were used as input parameters, while the HTCs of two-phase flow were used as output parameters in training and testing of the multilayered, feedforward, backpropagation neural networks. In this present study, experimental data were taken from literature and then used for the ANN model. The superficial liquid and gas Reynolds numbers ranged from 740 to 26,100 and 560 to 47,600 for water and air, respectively. The mean deviations against experimental data were determined for the model. Results showed that the network predictions were in very good agreement with the experimental HTC data, whereas the correlation showed more deviations. Finally, results showed that the accuracy between the neural network predictions and experimental data was achieved with mean relative error (MRE) of 2.92% and correlation coefficient (R) that was 0.997 for all datasets, which suggests the reliability of the ANNs as a strong tool for predicting HTCs with two-phase flows.
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Prediction of Two-Phase Heat Transfer Coefficients in a Horizontal Pipe for Different Inclined Positions With Artificial Neural Networks
Najmeh Sobhanifar,
Najmeh Sobhanifar
Young Researchers and Elite Club,
Shoushtar Branch,
e-mail: sobhanifar.najme@yahoo.com
Shoushtar Branch,
Islamic Azad University
,Shoushtar 64517-41117
, Iran
e-mail: sobhanifar.najme@yahoo.com
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Ebrahim Ahmadloo,
Ebrahim Ahmadloo
1
Young Researchers and Elite Club,
Darab Branch,
e-mail: ebrahimahmadloo@yahoo.com
Darab Branch,
Islamic Azad University
,Darab 74817-83143
, Iran
e-mail: ebrahimahmadloo@yahoo.com
1Corresponding author.
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Sadreddin Azizi
Sadreddin Azizi
Department of Chemical Engineering,
e-mail: sadraazizii@yahoo.com
Yasouj University
,Yasouj 75918-74831
, Iran
e-mail: sadraazizii@yahoo.com
Search for other works by this author on:
Najmeh Sobhanifar
Young Researchers and Elite Club,
Shoushtar Branch,
e-mail: sobhanifar.najme@yahoo.com
Shoushtar Branch,
Islamic Azad University
,Shoushtar 64517-41117
, Iran
e-mail: sobhanifar.najme@yahoo.com
Ebrahim Ahmadloo
Young Researchers and Elite Club,
Darab Branch,
e-mail: ebrahimahmadloo@yahoo.com
Darab Branch,
Islamic Azad University
,Darab 74817-83143
, Iran
e-mail: ebrahimahmadloo@yahoo.com
Sadreddin Azizi
Department of Chemical Engineering,
e-mail: sadraazizii@yahoo.com
Yasouj University
,Yasouj 75918-74831
, Iran
e-mail: sadraazizii@yahoo.com
1Corresponding author.
Manuscript received April 24, 2014; final manuscript received October 6, 2014; published online March 17, 2015. Assoc. Editor: Giulio Lorenzini.
J. Heat Transfer. Jun 2015, 137(6): 061009 (6 pages)
Published Online: June 1, 2015
Article history
Received:
April 24, 2014
Revision Received:
October 6, 2014
Online:
March 17, 2015
Citation
Sobhanifar, N., Ahmadloo, E., and Azizi, S. (June 1, 2015). "Prediction of Two-Phase Heat Transfer Coefficients in a Horizontal Pipe for Different Inclined Positions With Artificial Neural Networks." ASME. J. Heat Transfer. June 2015; 137(6): 061009. https://doi.org/10.1115/1.4029865
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