May 24, 2024
Shoaib Khanmohammadi

Shoaib Khanmohammadi

Academic rank: Associate professor
Address: Department of Mechanical Engineering, Kermanshah University of Technology, Kermanshah, Iran
Education: Ph.D in Mechanical Engineering
Phone: 0833-8305001
Faculty: Faculty of Engineering

Research

Title
Experimental investigation and develop ANNs by introducing the suitable architectures and training algorithms supported by sensitivity analysis: Measure thermal conductivity and viscosity for liquid paraffin based nanofluid containing Al2O3 nanoparticles
Type Article
Keywords
Paraffinoil; Al2O3 nanoparticles; Thermal conductivity; Viscosityp; GMDH neural network
Researchers Amin Shahsavar Goldanloo، Shoaib Khanmohammadi، davood toghraie، hamze salehipour

Abstract

The objective of this experimental investigation is to assess the variations of thermal conductivity and viscosity of liquid paraffin-Al2O3 nanofluid containing oleic acid surfactant against temperature, nanoparticle mass concentration and surfactant concentration. The experiments are performed in the temperature range of 20–50 °C, nanoparticle mass concentration range of 1–5%, and surfactant/nanoparticle mass ratio of 1:3, 2:3 and 3:3. The results showed that the nanofluid behaves as a shear thinning fluid. Besides, it was found that boosting the nanoparticle concentration causes an increase in the thermal conductivity and viscosity, while augmenting the temperature results in a decrease in the viscosity and an increase in the thermal conductivity. Moreover, it was observed that the viscosity increases with surfactant concentration, while the thermal conductivity initially rises with surfactant concentration and then reduces. Furthermore, the Artificial Neural Network (ANN) was implemented to model the thermal conductivity and viscosity of the nanofluid using experimental data. The findings depicted that the thermal conductivity model predicts the outputs with RMS, RMSE, MAE and R2 values of 0.0381, 0.0018, 0.0015 and 0.982, respectively. Meanwhile, these values for the viscosity model were respectively 0.0662, 0.0179, 0.0044 and 0.96