Seepage Modeling with SEEP/W - GeoStudio 2007 version 7.22

More documents

Recommendations

Info

Table of Contents SEEP/W Activation values ....................................................................................................... 110 Spatial function for the initial conditions ................................................................... 111 No initial condition .................................................................................................... 111 6.3 Time stepping - temporal integration 111 Finite element temporal integration formulation ....................................................... 112 Problems with time step sizes .................................................................................. 112 General rules for setting time steps .......................................................................... 113 Adaptive time stepping ............................................................................................. 113 6.4 Staged / multiple analyses 114 6.5 Axisymmetric 114 6.6 Plan view (confined aquifer only) 115 7 Functions in GeoStudio .................................................................. 118 7.1 Spline functions 118 Slopes of spline functions ......................................................................................... 119 7.2 Linear functions 120 7.3 Step functions 120 7.4 Closed form curve fits for water content functions 121 7.5 Add-in functions 121 7.6 Spatial functions 121 8 Numerical Issues ............................................................................ 123 8.1 Convergence 123 Significant figures ..................................................................................................... 124 Minimum difference .................................................................................................. 124 8.2 Evaluating convergence 124 Mesh view ................................................................................................................. 124 Graphs ...................................................................................................................... 125 Commentary ............................................................................................................. 127 8.3 Under-relaxation 127 8.4 Gauss integration order 127 8.5 Equation solvers (direct or parallel direct) 128 8.6 Time stepping 129 Estimating a starting time step size .......................................................................... 129 Time steps too small ................................................................................................. 129 9 Flow nets, seepage forces, and exit gradients ................................ 131 9.1 Flow nets 131 Page iv
SEEP/W Table of Contents Equipotential lines .................................................................................................... 132 Flow paths ................................................................................................................ 132 Flow channels ........................................................................................................... 133 Flow quantities .......................................................................................................... 135 Uplift pressures ......................................................................................................... 136 Limitations ................................................................................................................ 136 9.2 Seepage forces 137 Forces on a soil element .......................................................................................... 137 9.3 Exit gradients 138 Gradients .................................................................................................................. 138 Critical gradients ....................................................................................................... 139 Geometry considerations .......................................................................................... 139 Effective stress and soil strength .............................................................................. 142 Flow velocity ............................................................................................................. 143 9.4 Concluding remarks 143 10 Visualization of Results ................................................................... 145 10.1 Transient versus steady state results 145 10.2 Node and element information 145 10.3 Graphing node and gauss Data 148 10.4 “None” values 150 10.5 Water table 150 10.6 Isolines 151 10.7 Projecting Gauss point values to nodes 151 10.8 Contours 152 10.9 Animation in GeoStudio 153 10.10 Velocity vectors and flow paths 153 Calculating gradients and velocities ......................................................................... 153 Velocity vectors ........................................................................................................ 154 Flow paths ................................................................................................................ 154 10.11 Flux sections 155 Flux section theory ................................................................................................... 156 Flux section application ............................................................................................ 157 11 Modeling Tips and Tricks ................................................................ 159 11.1 Introduction 159 11.2 Problem engineering units 159 11.3 Flux section location 160 Page v
Page 1 and 2: Seepage Modeling with SEEP/W An Eng
Page 3 and 4: SEEP/W Table of Contents Table of C
Page 5: SEEP/W Table of Contents Method 3 (
Page 9 and 10: SEEP/W Chapter 1: Introduction 1 In
Page 11 and 12: SEEP/W Chapter 2: Numerical Modelin
Page 33 and 34: SEEP/W Chapter 3: Geometry and Mesh
Page 57 and 58:
SEEP/W Chapter 3: Geometry and Mesh
Page 59 and 60:
SEEP/W Chapter 3: Geometry and Mesh
Page 61 and 62:
SEEP/W Chapter 4: Material Models a
Page 63 and 64:
Page 65 and 66:
Page 67 and 68:
Page 69 and 70:
Page 71 and 72:
Page 73 and 74:
Page 75 and 76:
2 SEEP/W Chapter 4: Material Models
Page 77 and 78:
Page 79 and 80:
Page 81 and 82:
Page 83 and 84:
Page 85 and 86:
Page 87 and 88:
Page 89 and 90:
SEEP/W Chapter 5: Boundary Conditio
Page 91 and 92:
Page 93 and 94:
Page 95 and 96:
Page 97 and 98:
Page 99 and 100:
Page 101 and 102:
Page 103 and 104:
Page 105 and 106:
Page 107 and 108:
Page 109 and 110:
Page 111 and 112:
Page 113:
Page 116 and 117:
Chapter 6: Analysis Types SEEP/W ON
Page 118 and 119:
Chapter 6: Analysis Types SEEP/W Fi
Page 120 and 121:
Chapter 6: Analysis Types SEEP/W Fi
Page 122 and 123:
Chapter 6: Analysis Types SEEP/W 6.
Page 124 and 125:
Chapter 6: Analysis Types SEEP/W se
Page 126 and 127:
Chapter 7: Functions in GeoStudio S
Page 128 and 129:
Page 130 and 131:
Page 132 and 133:
Chapter 8: Numerical Issues SEEP/W
Page 134 and 135:
Page 136 and 137:
Page 138 and 139:
Page 140 and 141:
15 Chapter 9: Flow nets, seepage fo
Page 142 and 143:
Chapter 9: Flow nets, seepage force
Page 144 and 145:
Page 146 and 147:
Page 148 and 149:
Page 150 and 151:
Page 152 and 153:
Page 154 and 155:
Chapter 11: Modeling Tips and Trick
Page 156 and 157:
Page 158 and 159:
Page 160 and 161:
Page 162 and 163:
Page 164 and 165:
Page 166 and 167:
Page 168 and 169:
Page 170 and 171:
Page 172 and 173:
Page 174 and 175:
Page 176 and 177:
Page 178 and 179:
Chapter 12: Illustrative Examples S
Page 180 and 181:
Chapter 13: Theory SEEP/W k x k y Q
Page 182 and 183:
Chapter 13: Theory SEEP/W L = a des
Page 184 and 185:
Chapter 13: Theory SEEP/W Table 13-
Page 186 and 187:
Chapter 13: Theory SEEP/W [ C] = wh
Page 188 and 189:
Chapter 13: Theory SEEP/W { Q} = q
Page 190 and 191:
Chapter 13: Theory SEEP/W Figure 13
Page 192 and 193:
Chapter 13: Theory SEEP/W Page 184
Page 194 and 195:
References SEEP/W Figure 14-1 Globa
Page 196 and 197:
References SEEP/W In equation form,
Page 198 and 199:
References SEEP/W Table 14-4 Interp
Page 200 and 201:
References SEEP/W Burland J.B. 1996
Page 202 and 203:
References SEEP/W Swanson, D. 1991.
Page 204 and 205:
SEEP/W Index Adaptive time stepping
Page 206 and 207:
SEEP/W Seepage faces ..............
show all

Seepage Modeling with SEEP/W - GeoStudio 2007 version 7.22

Create successful ePaper yourself

Delete template?

Save as template?