FLOW AROUND A CYLINDER - istiarto

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– 2.18 – Fig. 2.6 Comparison of the measured relative scour depth with other measurements (see Graf and Altinakar, 1996)
– 2.19 – Fig. 2.7 Scour hole geometry obtained with the selected flow configuration, Q = 0.200 [m 3 /s], U∞ = 0.45 [m/s], h∞ = 18 [cm], and Dp = 15 [cm]. 2.4 Velocity measurements in the uniform approach flow (without cylinder) 2.4.1 Measurement stations The measurement of velocity in the uniform flow (it will be the approach flow when the cylinder is installed) is intended to provide the reference flow data, which shall be useful later in analyzing the flow data from the measurements around the cylinder. Six vertical distributions of velocity were measured at stations xL [m] = 9, 10, 11, 12, 13, and 14 along the centerline of the channel. At each station, 52 data points are obtained
Page 1 and 2: FLOW AROUND A CYLINDER IN A SCOURED
Page 3 and 4: - iii - Flow around a Cylinder in a
Page 5 and 6: - v - Écoulement à Surface Libre
Page 7 and 8: - vii - Acknowledgements I wish to
Page 9 and 10: - ix - Table of Contents Abstract i
Page 11 and 12: - xi - 4.4 Pressure-velocity coupli
Page 13 and 14: Chapter 1 - 1.i - 1 Introduction 1.
Page 15 and 16: 1 Introduction 1.1 Flow around a cy
Page 17 and 18: - 1.3 - pitot tubes. Ahmed and Raja
Page 19 and 20: Chapter 2 - 2.i - 2 Flow Measuremen
Page 21 and 22: 2 Flow Measurements Abstract - 2.1
Page 23 and 24: 2.1 Measurement design - 2.3 - The
Page 25 and 26: - 2.5 - The water circuit is a clos
Page 27 and 28: - 2.7 - Consider a target ―i‖ m
Page 29 and 30: - 2.9 - Obtaining the velocity comp
Page 31 and 32: - 2.11 - Fig. 2.4 Cartesian and cyl
Page 33 and 34: - 2.13 - transducer were used, a fo
Page 35 and 36: - 2.15 - typically needed for this
Page 37: - 2.17 - 2.3.3 Comparison to other
Page 41 and 42: - 2.21 - Fig. 2.8 Distributions of
Page 43 and 44: u ��u �� u� � Du exp�
Page 45 and 46: - 2.25 - �o , and accordingly the
Page 47 and 48: - 2.27 - Measurements in zone A. Th
Page 49 and 50: - 2.29 - and 0.3 u �� u ��
Page 51 and 52: - 2.31 - Fig. 2.12b Cont’d.
Page 53 and 54: - 2.33 - Fig. 2.12d Cont’d.
Page 55 and 56: 2.5.4 Measurements in the plane �
Page 61 and 62: - 2.41 - the solid boundary of the
Page 67 and 68: - 2.47 - Turbulence intensities in
Page 69 and 70: - 2.49 - Fig. 2.15a Vertical distri
Page 71 and 72: - 2.51 - Fig. 2.15c Cont’d.
Page 73 and 74: - 2.53 - Reynolds stresses in the p
Page 75 and 76: - 2.55 - Fig. 2.16c Cont’d.
Page 77 and 78: 2.6 Summary and conclusions - 2.57
Page 79 and 80: - 2.59 - Rolland, T. (1994). Develo
Page 81 and 82: Chapter 3 - 3.i - 3 Elaboration of
Page 83 and 84: - 3.1 - 3 Elaboration of the measur
Page 85 and 86: 3.1 Introduction - 3.3 - Presented
Page 87 and 88: - 3.5 - Fig. 3.1 Measured velocity
Page 89 and 90:
3.2.2 Flow pattern around the cylin
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- 3.9 - Fig. 3.2 Cont’d.
Page 93 and 94:
Flow in the plane � = 45° and 90
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- 3.13 - Fig. 3.4 Contours of the m
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3.2.4 Vertical velocity (downward f
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- 3.17 - flow may undergo a rotatin
Page 101 and 102:
- 3.19 - Fig. 3.7 Cont’d.
Page 103 and 104:
- 3.21 - A similar observation, in
Page 105 and 106:
- 3.23 - Fig. 3.9 Measured turbulen
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The following is to be observed: -
Page 109 and 110:
- 3.27 - Fig. 3.10 Cont’d.
Page 111 and 112:
- 3.29 - 3.4 Bed shear-stresses alo
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x [cm] - 3.31 - Table 3.1 Estimated
Page 115 and 116:
- 3.33 - Fig. 3.12 Estimated bed sh
Page 117 and 118:
- 3.35 - (see Fig. 3.10 and Fig. 3.
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- 3.37 - Fig. 3.14 Axonometric pres
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- 3.39 - U, U∞ [m/s] sectional av
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Chapter 4 - 4.i - 4 Numerical Model
Page 125 and 126:
- 4.1 - 4 Numerical Model Developme
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�u �t �v �t �w �t �
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- 4.5 - The volume integrals of the
Page 131 and 132:
- 4.7 - Fig. 4.1 Overall iterative
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- 4.9 - increase the computer stora
Page 135 and 136:
- 4.11 - �� 1 ��
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- 4.13 - convective transport throu
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- 4.15 - n,��1 during a time st
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� for 0 � Pe e � q eL PE �
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4.3.8 Source terms - 4.19 - The sou
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2D � � � x �� b 2D �
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- 4.23 - b T � V P �t � n P
Page 149 and 150:
- 4.25 - �� u ��1 � c i
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- 4.27 - Next, we need to define th
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4.5 Boundary conditions 4.5.1 Bound
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- 4.31 - The above relation holds a
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- 4.33 - � extrapolate all variab
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G � � t 2 �V t - 4.35 - 2 �
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with � �� nt,b � ��
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- 4.39 - boundary node B are then a
Page 165 and 166:
- 4.41 - Wall function for the �
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k and � equations - 4.43 - � se
Page 169 and 170:
�� z-momentum: - 4.45 - ��1
Page 171 and 172:
- 4.47 - � reconstruct the mesh,
Page 173 and 174:
- 4.49 - Fig. 4.13 The structure of
Page 175 and 176:
- 4.51 - ��
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4.7 Summary - 4.53 - Development of
Page 179 and 180:
- 4.55 - B, �B [-] constant and w
Page 181 and 182:
- 4.57 - �, � 1 , � p [-] und
Page 183 and 184:
Chapter 5 - 5.i - 5 Numerical Simul
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5 Numerical Simulation Abstract - 5
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5.2 Experimental data - 5.3 - 5.2.1
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- 5.5 - computational nodes. The ot
Page 191 and 192:
- 5.7 - (i) Yulistiyanto data (ii)
Page 193 and 194:
- 5.9 - ( p � � 1 [mm]), but th
Page 195 and 196:
- 5.11 - Fig. 5.4 Model test result
Page 197 and 198:
- 5.13 - within a greater number of
Page 199 and 200:
- 5.15 - Fig. 5.6 Computational his
Page 201 and 202:
- 5.17 - 5.5 Simulation of flow aro
Page 203 and 204:
- 5.19 - Fig. 5.9 Definition sketch
Page 205 and 206:
- 5.21 - Fig. 5.10 Computed (lines)
Page 207 and 208:
- 5.23 - Fig. 5.11 Computed and mea
Page 209 and 210:
- 5.25 - 1.2U ∞ of the measuremen
Page 211 and 212:
Water-surface profile - 5.27 - The
Page 213 and 214:
- 5.29 - using a Joukowski transfor
Page 215 and 216:
- 5.31 - 5.6.3 Results of the simul
Page 217 and 218:
Velocity fields around the cylinder
Page 219 and 220:
- 5.35 - Fig. 5.18 Computed and mea
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- 5.37 - than the measured one. The
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- 5.39 - Production and dissipation
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- 5.41 - Production of turbulent ki
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- 5.43 - If the above approach were
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- 5.45 - and surface profiles (see
Page 231 and 232:
- 5.47 - Fig. 5.24 Surface boundary
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- 5.49 - S [m 2 ] surface area. So,
Page 235 and 236:
Chapter 6 - 6.i - 6 Summary and Con
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- 6.1 - 6 Summary and Conclusions 6
Page 239 and 240:
- 6.3 - The spatial distributions o
Page 241 and 242:
- 6.5 - � Laboratory measurements
Page 243 and 244:
- 6.7 - Fig. 6.1 Measured and compu
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IDENTITE - 7.1 - Curriculum Vitæ N
Page 247 and 248:
FLOW AROUND A CYLINDER IN A SCOURED
Page 249 and 250:
- iii - Appendices Appendix A: Expe
Page 251 and 252:
A Experimental Data - A.1 - The exp
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B Numerical Model B.1 Program struc
Page 255 and 256:
- B.3 -
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B.2 Input data file - B.5 - The inp
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- B.7 - #31 imon1, jmon1, kmon1 thr
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BLO for blocked cells, INL for inle
Page 263:
FLOW AROUND A CYLINDER IN A SCOURED
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