Arama Sonuçları - "free surface flow"

High-Performance Computing for Structural Mechanics and Earthquake/Tsunami Engineering

İçindekiler: “…Fundamentals of high-performance computing for finite element analysis -- Simulation of seismic wave propagation and amplification -- Seismic response simulation of infrastructure -- Seismic response simulation of building structures -- Seismic response simulation of nuclear power plant -- Tsunami run-up Simulation -- Inundation simulation coupling free surface flow and structures.…”
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Unified Lagrangian Formulation for Fluid and Solid Mechanics, Fluid-Structure Interaction and Coupled Thermal Problems Using the PFEM Yazar: Franci, Alessandro

İçindekiler: “…1 Introduction -- 1.1 Objectives -- 1.2 State of the art -- 1.2.1 Eulerian and Lagrangian approaches for free surface flow analysis -- 1.2.2 Stabilization techniques -- 1.2.3 Algorithms for FSI problems -- 1.3 Numerical model -- 1.3.1 Reasons -- 1.3.2 Essential features -- 1.3.3 Outline -- 1.4 Publications -- 2 Velocity-based formulations for compressible materials -- 2.1 Velocity formulation -- 2.1.1 From the local form to the spatial semi-discretization -- 2.1.2 Time integration -- 2.1.3 Linearization -- 2.1.4 Incremental solution scheme -- 2.2 Mixed velocity-pressure formulation -- 2.2.1 Quasi-incompressible form of the continuity equation -- 2.2.2 Solution method -- 2.3 Hypoelasticity -- 2.3.1 Velocity formulation for hypoelastic solids -- 2.3.2 Mixed Velocity-Pressure formulation for hypoelastic solids -- 2.3.3 Theory of plasticity -- 2.3.3.1 Hypoelastic-plastic materials -- 2.3.4 Validation examples -- 2.4 Summary and conclusions -- 3 Unified stabilized formulation for quasi-incompressible materials -- 3.1Stabilized FIC form of the mass balance equation -- 3.1.1 Governing equations -- 3.1.2 FIC mass balance equation in space and in time -- 3.1.3 FIC stabilized local form of the mass balance equation -- 3.1.4 Variational form -- 3.1.5 FEM discretization and matrix form -- 3.2 Solution scheme for quasi-incompressible Newtonian fluids -- 3.2.1 Governing equations -- 3.2.2 Solution scheme -- 3.3 Solution scheme for quasi-incompressible hypoelastic solids -- 3.4 Free surface flow analysis -- 3.4.1 The Partiele Finite Element Method -- 3.4.1.1 Remeshing -- 3.4.1.2 Basic steps -- 3.4.1.3 Advantages and disadvantages -- 3.4.2 Mass conservation analysis -- 3.4.2.1 Numerical examples -- 3.4.3 Analysis of the conditioning of the solution scheme -- 3.4.3.1 Drawbacks associated to the real bulk modulus -- 3.4.3.2 Optimum value for the pseudo bulk modulus -- 3.4.3.3 Numerical examples -- 3.5 Validation examples -- 3.5.1 Validation of the Unified formulation for Newtonian fluids -- 3.5.2 Validation of the Unified formulation for quasi-incompressible hypoelastic solids -- 3.6 Summary and conclusions -- 4 Unified formulation for F SI problems -- 4.1 Introduction -- 4.2 FSI algorithm -- 4.3 Coupling with the Velocity formulation for the solid -- 4.4 Coupling with the mixed Velocity-Pressure formulation for the solid -- 4.5 Numerical examples -- 4.6 Summary and conclusions -- 5 Coupled thermal-mechanical formulation -- 5.1 Introduction -- 5.2 Heat problem -- 5.2.1 FEM discretization and solution for a time step -- 5.3 Thermal coupling -- 5.3.1 Numerical examples -- 5.4 Phase change -- 5.4.1 Numerical example: melting of an ice block -- 5.5 Summary and conclusions -- 6 Industrial application: PFEM Analysis Model of NPP Severe Accident -- 6.1 Introduction -- 6.1.1 Assumptions allowed by the specification -- 6.2 Numerical method -- 6.3 Basic Model -- 6.3.1 Problem data -- 6.3.2 Preliminary study -- 6.3.3 Numerical results -- 6.4 Detailed model -- 6.4.1 Problem data -- 6.4.2 Preliminary study -- 6.4.3 Numerical results -- 6.5 Summary and conclusions -- 7 Conclusions and future lines of research -- 7.1 Contributions -- 7.2 Lines for future work.…”
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OpenFOAM® Selected Papers of the 11th Workshop /

İçindekiler: “…The Harmonic Balance Method for Temporally Periodic Free Surface Flows -- Chap 34. Two-Way Coupled Eulerian-Eulerian Simulations of Drifting Snow with Viscous Treatment of the Snow Phase -- Chap 35. …”
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High performance polymers and their nanocomposites /

İçindekiler: “…<P>Preface xv</p> <p><b>1 High-Performance Polymer Nanocomposites and Their Applications: State of Art and New Challenges 1<br /></b><i>PM Visakh</i></p> <p>1.1 Liquid Crystal Polymers 1</p> <p>1.2 Polyamide 4, 6, (PA4,6) 3</p> <p>1.3 Polyacrylamide 4</p> <p>1.4 Effect of Nanostructured Polyhedral Oligomeric Silsesquioxone on High Performance Poly(urethane-Imide) 5</p> <p>1.5 Thermoplastic Polyimide 5</p> <p>1.6 Performance Properties and Applications of Polytetrafluoroethylene (PTFE) 7</p> <p>1.7 Advances in High-Performance Polymers Bearing Phthalazinone Moieties 9</p> <p>1.8 Poly(ethylene Terephthalate)-PET and Poly(ethylene Naphthalate)-PEN 11</p> <p>1.9 High-Performance Oil Resistant Blends of Ethylene Propylene Diene Monomer (EPDM) and Epoxydized Natural Rubber (ENR) 14</p> <p>1.10 High Performance Unsaturated Polyester/f-MWCNTs Nanocomposites Induced by F- Graphene Nanoplatelets 15</p> <p><b>2 Liquid Crystal Polymers 27<br /></b><i>Andreea Irina Barzic, Raluca Marinica Albu and Luminita Ioana Buruiana </i></p> <p>2.1 Introduction and History 27</p> <p>2.2 Polymerization 29</p> <p>2.2.1 Synthesis of Lyotropic LC Polymers 30</p> <p>2.2.2 Synthesis of Thermotropic LC Polymers 31</p> <p>2.3 Properties 32</p> <p>2.3.1 Rheology 32</p> <p>2.3.2 Dielectric Behavior 35</p> <p>2.3.3 Magnetic Properties 36</p> <p>2.3.4 Mechanical Properties 36</p> <p>2.3.5 Phases and Morphology 39</p> <p>2.4 Processing 41</p> <p>2.4.1 Injection Molding 41</p> <p>2.4.2 Extrusion 42</p> <p>2.4.3 Free Surface Flow 43</p> <p>2.4.4 LC Polymer Fiber Spinning 44</p> <p>2.5 Blends Based on Liquid Crystal Ppolymers 44</p> <p>2.6 Composites of Liquid Crystal Polymers 46</p> <p>2.7 Applications 49</p> <p>2.7.1 LC Polymers as Optoelectronic Materials 49</p> <p>2.7.2 Liquid Crystalline Polymers in Displays 50</p> <p>2.7.3 Sensors and Actuators 51</p> <p>2.8 Environmental Impact and Recycling 52</p> <p>2.9 Concluding Remarks and Future Trends 54</p> <p>Acknowledgment 54</p> <p><b>3 Polyamide 4,6, (PA4,6) 59<br /></b><i>Emel Kuram and Zeynep Munteha Sahin</i></p> <p>3.1 Introduction and History 59</p> <p>3.2 Polymerization and Fabrication 60</p> <p>3.3 Properties 69</p> <p>3.4 Chemical Stability 72</p> <p>3.5 Compounding and Special Additives 72</p> <p>3.6 Processing 73</p> <p>3.7 Applications 83</p> <p>3.8 Blends of Polyamide 4,6, (PA4,6) 84</p> <p>3.9 Composites of Polyamide 4,6, (PA4,6) 89</p> <p>3.10 Nanocomposites of Polyamide 4,6, (PA4,6) 90</p> <p>3.11 Environmental Impact and Recycling 94</p> <p>3.12 Conclusions 98</p> <p><b>4 Polyacrylamide (PAM) 105<br /></b><i>Małgorzata Wiśniewska</i></p> <p>4.1 Introduction and History 105</p> <p>4.2 Polymerization and Fabrication 107</p> <p>4.3 Properties 110</p> <p>4.4 Chemical Stability 111</p> <p>4.5 Compounding and Special Additives  112</p> <p>4.6 Processing  113</p> <p>4.7 Applications  114</p> <p>4.8 Blends of Polyacrylamide  116</p> <p>4.9 Composites of Polyacrylamide  118</p> <p>4.10 Nanocomposites of Polyacrylamide  119</p> <p>4.11 Environmental Impact and Recycling  121</p> <p>4.12 Conclusions  122</p> <p><b>5 Effect of Nanostructured Polyhedral Oligomeric Silsesquioxone on High Performance Poly(urethane-imide) 133<br /></b><i>Dhorali Gnanasekaran</i></p> <p>5.1 Introduction 134</p> <p>5.2 Experimental 136</p> <p>5.3 Results and Discussion 138</p> <p>5.4 Conclusions 145</p> <p><b>6 Thermoplastic Polyimide (TPI) 149<br /></b><i>Xiantao Feng and Jialei Liu</i></p> <p>6.1 Introduction and History 149</p> <p>6.2 Polymerization and Fabrication 150</p> <p>6.2.1 Thermoplastic Polyimides Based on BEPA 150</p> <p>6.2.2 Thermoplastic Polyimides based on PMDA 153</p> <p>6.2.3 Thermoplastic Polyimides Based on BTDA 154</p> <p>6.2.4 Thermoplastic Polyimides Based on ODPA 157</p> <p>6.2.5 Thermoplastic Polyimides Based on BPDA 157</p> <p>6.2.6 Thermoplastic Copolyimides 158</p> <p>6.3 Properties 160</p> <p>6.3.1 TPI Based on BEPA 160</p> <p>6.3.2 Thermoplastic Polyimides based on PMDA 163</p> <p>6.3.3 TPI Based on ODPA 163</p> <p>6.3.4 Thermoplastic Polyimides Based on BPDA 168</p> <p>6.3.5 Thermoplastic Copolyimides 170</p> <p>6.4 Chemical Stability 170</p> <p>6.4.1 Hydrolytic Stability 170</p> <p>6.4.2 Oxidative Stability 174</p> <p>6.5 Compounding 175</p> <p>6.5.1 Chloromethylation 175</p> <p>6.5.2 Sulfonation 178</p> <p>6.5.3 Phosphorylation 178</p> <p>6.5.4 Bromination 178</p> <p>6.5.5 Arylation 181</p> <p>6.6 Processing 181</p> <p>6.6.1 Injection Molding 181</p> <p>6.6.2 Compression Molding 182</p> <p>6.6.3 Extrusion Molding 184</p> <p>6.6.4 Coating 184</p> <p>6.6.5 Spinning [40] 186</p> <p>6.7 Applications 186</p> <p>6.7.1 Membranes 186</p> <p>6.7.2 Adhesives 188</p> <p>6.7.3 Composites 189</p> <p>6.7.3.1 Skybond 190</p> <p>6.7.4 Engineering Plastics 190</p> <p>6.7.4.1 VESPEL Plastics 190</p> <p>6.7.4.2 ULTEM Plastics [48, 49] 191</p> <p>6.7.4.3 AURUM Plastics [50] 192</p> <p>6.7.4.3 Ratem Plastics [51] 192</p> <p>6.8 Blends of Thermoplastic Polyimide (TPI) 193</p> <p>6.8.1 TPI Blends with TPI 193</p> <p>6.8.2 Polyamic Acid Blending 195</p> <p>6.9 Composites of Thermoplastic Polyimide (TPI) 196</p> <p>6.9.1 LaRC Composites 197</p> <p>6.9.2 Skybond 202</p> <p>6.9.3 PAI Polyamide-Imide Composites 205</p> <p>6.10 Nanocomposites of Thermoplastic Polyimide (TPI) 208</p> <p>6.10.1 TPI/silver Nanocomposite 208</p> <p>6.10.2 TPI/Fe-FeO Nanocomposite 210</p> <p>6.10.3 TPI/Carbon Nanocomposites 211</p> <p>6.10.4 TPI/CF/TiO2 Nanocomposite 214</p> <p>6.11 Environmental Impact and Recycling 214</p> <p>6.12 Conclusions 215</p> <p><b>7 Performance Properties and Applications of Polytetrafluoroethylene (PTFE) -- A Review 221<br /></b><i>E. …”
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