Mechanical engineering technologies and applications. (Volume 1)

This book focuses on cases and studies of interest to mechanical engineers and industrial technicians. The considered applications in this volume are widely used in several industrial fields particularly in the automotive and aviation industries. Readers will understand the theory and techniques which are used in each application covered in each chapter. The book contents include the following topics: Numerical analysis of hydrokinetic turbines Computational fluid dynamics of a CuO based nanofluid in mini-channel cross-sections Orthodontic biomechanics of a NiTi arch wires Reynold’s number effects on fluid flow through Savonius rotors Effect of operating parameters on Zn-Mn alloys deposited from additive-free chloride bath Optical properties and stability of a blue-emitting phosphor (Sr2P2O7:Eu2+) Under UV and VUV excitation Numerical study of the influence of nanofluid type on thermal improvement in a three dimensional mini channel Electrochemical studies and characterization of Zn-Mn coatings deposited in the presence of novel organic additives Prediction of fire and smoke propagation under a range of external conditions Structural design of a 10 kW H-Darrieus wind turbine The presented case studies and development approaches aim to provide the readers, such as graduate students, PhD candidates and professionals with basic and applied information broadly related to mechanical engineering and technology. Cover 1 Title 2 Copyright 3 End User License Agreement 4 Contents 6 Preface 10 List of Contributors 13 Numerical Study of a Hydrokinetic Turbine 15 Mabrouk Mosbahi1,*, Mariem Lajnef1 and Zied Driss1 15 INTRODUCTION 15 Physical Model 17 Numerical Method 18 Computing Domain and Limit Conditions 18 Meshing 19 Numerical Settings 21 Comparison with Experimental Results 24 RESULTS AND DISCUSSION 26 Magnitude Velocity 26 Static Pressure 28 Turbulent Kinetic Energy 29 Turbulence Eddy Dissipation 30 Eddy Viscosity 31 CONCLUDING REMARKS 32 CONSENT FOR PUBLICATION 33 CONFLICT OF INTEREST 33 ACKNOWLEDGEMENTS 33 REFERENCES 33 CFD Simulation of the Heat Transfer using a Cuo-water Nano-fluid in Different Cross-sections of Mini-channels 36 Kamel Chadi1,*, Aymen Mohamed Kethiri1, Nourredine Belghar1, Belhi Guerira2 and Zied Driss3 36 INTRODUCTION 37 STUDIED GEOMETRIES 39 MATHEMATICAL FORMULATION 40 RESULTS AND INTERPRETATIONS 43 CONCLUSION 47 CONSENT FOR PUBLICATION 47 CONFLICT OF INTEREST 47 ACKNOWLEDGEMENTS 47 REFERENCES 47 Influence of the Force Delivery of Orthodontic NiTi Arch Wire on its Tribological Behavior 49 Ines Ben Naceur1,* and Khaled Elleuch1 49 INTRODUCTION 49 MATERIALS AND METHODS 51 RESULTS 52 Microhardness Test 52 Tribological Response of NiTi Archwires 52 CONCLUDING REMARKS 61 CONSENT FOR PUBLICATION 61 CONFLICT OF INTEREST 61 ACKNOWLEDGEMENTS 61 REFERENCES 61 Reynolds Number Effects on the Flow through a Savonius Wind Rotor 64 Sobhi Frikha1,*, Mariem Lajnef1 and Zied Driss1 64 INTRODUCTION 64 MATERIAL AND METHOD 65 EXPERIMENTAL METHODS 65 EXPERIMENTAL RESULTS 69 Power Coefficient 69 Dynamic Torque Coefficient 69 Static Torque Coefficient 72 CONCLUSION 73 CONSENT FOR PUBLICATION 73 CONFLICT OF INTEREST 74 ACKNOWLEDGEMENTS 74 NOMENCLATURE 74 REFERENCES 74 Effect of Operating Parameters on Zn-Mn Alloys Deposited from Additive-free Chloride Bath 76 Nouha Loukil1,* and Mongi Feki1 76 INTRODUCTION 76 MATERIAL AND METHODS 77 RESULTS AND DISCUSSION 78 Effect of the Current Density 78 Effect of Mn2+Concentration 80 Effect of Stirring on Mn Content 81 Morphology of Zn-Mn Alloys 82 CONCLUSION 83 NOTES 84 CONSENT FOR PUBLICATION 84 CONFLICT OF INTEREST 84 ACKNOWLEDGEMENTS 84 REFERENCES 84 Optical Properties and Stability of a Blue-Emitting Phosphor Sr2P2O7:Eu2+ Under UV and VUV Excitation 86 Mouna Derbel1,* and Aïcha Mbarek1,2 86 INTRODUCTION 86 EXPERIMENTAL 87 Sample Synthesis 87 Characterization Technique 88 RESULTS AND DISCUSSION 88 Phase Analysis 88 Solid-state NMR Spectroscopy 90 IR Spectroscopy 90 The Absorption of α-Sr2P2O7 91 PHOTOLUMINESCENCE PROPERTIES 92 UV- Vis SPECTROSCOPY 92 VUV Spectroscopy 94 Thermal Stability 95 CONCLUDING REMARKS 97 CONSENT FOR PUBLICATION 98 CONFLICT OF INTEREST 98 ACKNOWLEGEMENTS 98 REFERENCES 98 Numerical Study of the Influence of Nano-fluid Type on Thermal Improvement in a Three Dimensional Mini Channel 101 Kamel Chadi1,*, Nora Boultif1, Nourredine Belghar1, Aymen Mohamed Kethiri1, Zied Driss3 and Belhi Guerira2 101 INTRODUCTION 102 STUDIED GEOMETRIES 104 MATHEMATICAL FORMULATION 105 RESULTS AND INTERPRETATIONS 108 CONCLUSION 112 CONSENT FOR PUBLICATION 112 CONFLICT OF INTEREST 113 ACKNOWLEDGEMENTS 113 REFERENCES 113 Electrochemical Studies and Characterization of Zn-Mn Coatings deposited in the presence of Novel Organic Additives 115 Nouha Loukil1,* and Mongi Feki2 115 INTRODUCTION 115 EXPERIMENTAL DETAILS 117 Cyclic Voltammetry 118 Morphology and Composition Characterizations 118 RESULTS AND DISCUSSION 118 Zn Deposition 118 Mn Deposition 120 Zn-Mn Co-Deposition 122 Characterization of the Coatings 123 Chemical Composition of Zn-Mn Deposits 123 Morphological Characterisation of Zn-Mn Deposits 124 Structural Properties of Zn-Mn Coatings 126 CONCLUSION 128 CONSENT FOR PUBLICATION 128 CONFLICT OF INTEREST 128 ACKNOWLEDGEMENTS 128 REFERENCES 128 Prediction of Fire and Smoke Propagation under a Range of External Conditions 132 Miloua Hadj1,*, Blidi Djamel1, Soummar Ahmed1 and Bouderne Hamid1 132 INTRODUCTION 132 MATERIALS AND METHODS 133 Calculation Tool and Computational Domain 134 MATHEMATICAL MODELS 134 RESULTS AND DISCUSSIONS 137 Flame Shape without any External Wind or Ventilation 137 Fire and Water Mist Interaction 139 Forest Fire 141 Domestics and Urban Fire 142 CONCLUSIONS 142 CONSENT FOR PUBLICATION 142 CONFLICT OF INTEREST 143 ACKNOWLEDGEMENTS 143 NOMENCLATURE 143 REFERENCES 145 Structural Design of a 10 kW H-Darrieus Wind Turbine 147 Soumia Benbouta1,*, Fateh Ferroudji2 and Toufik Ouattas1 147 INTRODUCTION 147 TYPES OF WIND TURBINES AND THEIR ADVANTAGES AND DISADVANTAGES [8, 9] 149 Horizontal Axis Wind Turbines (Hawt) [8] 149 WIND TURBINE COMPONENTS 150 WIND TURBINE DESIGN 151 Rotor Design 152 Wind Turbine Operation Parameters 152 Design Parameters 154 Generator Design (MADA) 156 Mast Design 158 Foundation 159 CONCLUDING REMARKS 159 CONSENT FOR PUBLICATION 160 CONFLICT OF INTEREST 160 ACKNOWLEDGEMENTS 160 LIST OF ABBREVIATIONS 160 REFERENCES 161 Subject Index 163 Back Cover 169