Fluid mechanics for chemical engineering:
Gespeichert in:
1. Verfasser: | |
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Format: | Buch |
Sprache: | English |
Veröffentlicht: |
London
ISTE
2011
Hoboken, NJ Wiley |
Schlagworte: | |
Online-Zugang: | Inhaltsverzeichnis |
Beschreibung: | Includes bibliographical references and index |
Beschreibung: | XV, 422 S. Ill., graph. Darst. 24 cm |
ISBN: | 9781848212817 184821281X |
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245 | 1 | 0 | |a Fluid mechanics for chemical engineering |c Mathieu Mory |
264 | 1 | |a London |b ISTE |c 2011 | |
264 | 1 | |a Hoboken, NJ |b Wiley | |
300 | |a XV, 422 S. |b Ill., graph. Darst. |c 24 cm | ||
336 | |b txt |2 rdacontent | ||
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500 | |a Includes bibliographical references and index | ||
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Datensatz im Suchindex
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adam_text | Titel: Fluid mechanics for chemical engineering
Autor: Mory, Mathieu
Jahr: 2011
Table of Contents
Preface........................................... xiii
Part I. Elements in Fluid Mechanics...................... 1
Chapter 1. Local Equations of Fluid Mechanics................. 3
1.1. Forces, stress tensor, and pressure...................... 4
1.2. Navier-Stokes equations in Cartesian coordinates............. 6
1.3. The plane Poiseuille flow........................... 10
1.4. Navier-Stokes equations in cylindrical coordinates: Poiseuille flow
in a circular cylindrical pipe............................. 13
1.5. Plane Couette flow............................... 17
1.6. The boundary layer concept.......................... 19
1.7. Solutions of Navier-Stokes equations where a gravity field is present,
hydrostatic pressure.................................. 22
1.8. Buoyancy force................................. 25
1.9. Some conclusions on the solutions of Navier-Stokes equations..... 26
Chapter 2. Global Theorems of Fluid Mechanics................ 29
2.1. Euler equations in an intrinsic coordinate system............. 30
2.2. Bernoulli s theorem............................... 31
2.3. Pressure variation in a direction normal to a streamline.......... 33
2.4. Momentum theorem............................... 36
2.5. Evaluating friction for a steady-state flow in a straight pipe....... 38
2.6. Pressure drop in a sudden expansion (Borda calculation)........ 40
2.7. Using the momentum theorem in the presence of gravity......... 43
2.8. Kinetic energy balance and dissipation................... 43
2.9. Application exercises.............................. 47
Exercise 2.1: Force exerted on a bend...................... 47
vi Fluid Mechanics for Chemical Engineering
Exercise 2.II: Emptying a tank.......................... 48
Exercise 2.Ill: Pressure drop in a sudden expansion and heating...... 48
Exercise 2.IV: Streaming flow on an inclined plane............. 49
Exercise 2.V: Impact of a jet on a sloping plate................ 50
Exercise 2. VI: Operation of a hydro-ejector.................. 51
Exercise 2.VII: Bypass flow........................... 53
Chapter 3. Dimensional Analysis........................... 55
3.1. Principle of dimensional analysis, Vaschy-Buckingham theorem ... 56
3.1.1. Example-the oscillating pendulum................... 60
3.2. Dimensional study of Navier-Stokes equations.............. 61
3.3. Similarity theory................................. 63
3.4. An application example: fall velocity of a spherical particle in a
viscous fluid at rest.................................. 65
3.4.1. Application of the Vaschy-Buckingham theorem........... 65
3.4.2. Forces exerted on the ball......................... 66
3.4.3. The hydrodynamic force opposing the particle s movement
relative to the fluid................................. 67
3.4.4. Fall velocity for a small Reynolds number............... 67
3.4.5. Fall velocity for a large Reynolds number............... 68
3.5. Application exercises.............................. 69
Exercise 3.1: Time of residence and chemical reaction in a stirred
reactor........................................ 69
Exercise 3.II: Boundary layer on an oscillating plate............. 69
Exercise 3.III: Head capacity curve of a centrifugal pump......... 70
Chapter 4. Steady-State Hydraulic Circuits.................... 73
4.1. Operating point of a hydraulic circuit.................... 73
4.2. Steady-state flows in straight pipes: regular head loss........... 78
4.3. Turbulence in a pipe and velocity profile of the flow........... 81
4.4. Singular head losses............................... 83
4.5. Notions on cavitation.............................. 87
4.6. Application exercises.............................. 88
Exercise 4.1: Regular head loss measurement and flow rate in a pipe ... 88
Exercise 4.II: Head loss and cavitation in a hydraulic circuit........ 89
Exercise 4.III: Ventilation of a road tunnel.................. 91
Exercise 4.IV: Sizing a network of heating pipes............... 92
Exercise 4.V: Head, flow rate, and output of a hydroelectric
power plant..................................... 93
4.7. Bibliography................................... 93
Table of Contents vii
Chapter 5. Pumps.................................... 95
5.1. Centrifugal pumps................................ 96
5.1.1. Operating principle............................. 96
5.1.2. Similarity laws and head/capacity curves................ 97
5.1.3. Implementation of a centrifugal pump................. 101
5.2. Classification of turbo pumps and axial pumps............... 105
5.3. Positive displacement pumps......................... 106
Chapter 6. Transient Flows in Hydraulic Circuits: Water Hammers .... Ill
6.1. Sound propagation in a rigid pipe....................... Ill
6.2. Over-pressures associated with a water hammer: characteristic
time of a hydraulic circuit.............................. 115
6.3. Linear elasticity of a solid body: sound propagation in an
elastic pipe....................................... 118
6.4. Water hammer prevention devices...................... 120
Exercise....................................... 121
Chapter 7. Notions of Rheometry.......................... 123
7.1. Rheology..................................... 123
7.2. Strain, strain rate, solids and fluids...................... 126
7.3. A rheology experiment: behavior of a material subjected
to shear......................................... 129
7.4. The circular cylindrical rheometer (or Couette rheometer) ....... 132
7.5. Application exercises.............................. 136
Exercise 7.1: Rheometry and flow of a Bingham fluid in a pipe...... 136
Exercise 7.II: Cone/plate rheometer....................... 137
Part II. Mixing and Chemical Reactions................... 139
Chapter 8. Large Scales in Turbulence: Turbulent Diffusion -
Dispersion......................................... 141
8.1. Introduction.................................... 141
8.2. Concept of average in the turbulent sense, steady turbulence, and
homogeneous turbulence.............................. 142
8.3. Average velocity and RMS turbulent velocity............... 145
8.4. Length scale of turbulence: integral scale.................. 146
8.5. Turbulent flux of a scalar quantity: averaged diffusion equation .... 151
8.6. Modeling turbulent fluxes using the mixing length model........ 153
8.7. Turbulent dispersion.............................. 157
8.8. The k-emodel.................................. 159
viii Fluid Mechanics for Chemical Engineering
8.9. Appendix: solution of a diffusion equation in cylindrical
coordinates....................................... 163
8.10. Application exercises............................. 165
Exercise 8.1: Dispersion of fluid streaks introduced into a pipe
by a network of capillary tubes.......................... 165
Exercise 8.II: Grid turbulence andA £ modeling............... 167
Chapter 9. Hydrodynamics and Residence Time
Distribution - Stirring................................. 171
9.1. Turbulence and residence time distribution................. 172
9.1.1. Notion of residence time distribution.................. 172
9.1.2. Modeling RTD via a turbulent diffusion approach:
cases of a tubular reactor with axial dispersion and of a CSTR....... 173
9.2. Stirring...................................... 178
9.2.1. Mechanical characterization of a stirrer................. 178
9.2.2. Stirring and mixing time.......................... 182
9.2.3. Emulsions and foams............................ 183
9.3. Appendix: interfaces and the notion of surface tension.......... 185
9.3.1. Interface between two non-miscible fluids and
surface tension................................... 185
9.3.2. Equilibrium in the contact line between three phases,
Jurin s law...................................... 187
Chapter 10. Micromixing and Macromixing................... 193
10.1. Introduction................................... 193
10.2. Characterization of the mixture: segregation index............ 195
10.3. The dynamics of mixing........................... 198
10.4. Homogenization of a scalar field by molecular diffusion:
micromixing...................................... 201
10.5. Diffusion and chemical reactions...................... 202
10.6. Macromixing, micromixing, and chemical reactions........... 204
10.7. Experimental demonstration of the micromixing process........ 205
Chapter 11. Small Scales in Turbulence...................... 209
11.1. Notion of signal processing, expansion of a time signal into
Fourier series..................................... 210
11.2. Turbulent energy spectrum.......................... 213
11.3. Kolmogorov s theory............................. 214
11.4. The Kolmogorov scale............................ 218
11.5. Application to macromixing, micromixing and
chemical reaction................................... 221
Table of Contents ix
11.6. Application exercises............................. 222
Exercise 11.1: Mixing in a continuous stirred tank reactor......... 222
Exercise 11.11: Mixing and combustion..................... 223
Exercise 11.Ill: Laminar and turbulent diffusion flames........... 225
Chapter 12. Micromixing Models.......................... 229
12.1. Introduction................................... 229
12.2. CD model.................................... 233
12.2.1. Principle.................................. 233
12.2.2. CD model in a closed reactor without reaction............ 235
12.2.3. CD model in an open reactor without reaction............ 239
12.2.4. CD model in the presence of a chemical reaction.......... 241
12.3. Model of interaction by exchange with the mean............. 245
12.3.1. Principle.................................. 245
12.3.2. IEM model without a chemical reaction................ 246
12.3.3. IEM model with a chemical reaction.................. 249
12.4. Conclusion................................... 250
12.5. Application exercise.............................. 251
Exercise 12.1: Implementation of the IEM model for a slow or fast
chemical reaction.................................. 251
Part III. Mechanical Separation........................ 253
Chapter 13. Physical Description of a Particulate Medium
Dispersed Within a Fluid................................ 255
13.1. Introduction................................... 255
13.2. Solid particles.................................. 257
13.2.1. Geometrical characterization of a particle............... 257
13.2.2. Grain size distribution in a granular medium............. 259
13.2.3. Determination of a solid s density using apycnometer....... 261
13.2.4. Concentrations............................... 263
13.2.5. Formation of clusters, coagulation, and flocculation........ 264
13.3 Fluid particles.................................. 270
13.4. Mass balance of a mechanical separation process............ 273
Chapter 14. Flows in Porous Media......................... 277
14.1. Consolidated porous media; non-consolidated porous media,
and geometrical characterization.......................... 278
14.2. Darcy s law................................... 280
14.3. Examples of application of Darcy s law.................. 282
14.3.1. Laboratory permeameters........................ 282
x Fluid Mechanics for Chemical Engineering
14.3.2. Membrane resistance to filtration.................... 286
14.3.3. Dead-end filtration and cross-flow filtration............. 288
14.4. Modeling Darcy s law through an analogy with the flow
inside a network of capillary tubes......................... 289
14.5. Modeling permeability, Kozeny-Carman formula............ 291
14.6. Ergun s relation................................ 293
14.7. Draining by pressing.............................. 293
14.7.1. Draining the liquid............................ 295
14.7.2. Mechanical equilibrium of forces applied on the solid skeleton
and on the liquid.................................. 295
14.7.3. Force transmission in the structure................... 296
14.7.4. Characteristic time of draining by pressing.............. 298
14.8. The reverse osmosis process......................... 298
14.9. Energetics of membrane separation..................... 301
14.10. Application exercises............................ 301
Exercise: Study of a seawater desalination process.............. 301
Chapter 15. Particles Within the Gravity Field.................. 305
15.1. Settling of a rigid particle in a fluid at rest................. 306
15.2. Settling of a set of solid particles in a fluid at rest............ 309
15.3. Settling or rising of a fluid particle in a fluid at rest........... 312
15.4. Particles being held in suspension by Brownian motion......... 315
15.5. Particles being held in suspension by turbulence............. 319
15.6. Fluidized beds................................. 321
15.6.1. Flow regimes................................ 321
15.6.2. Mechanical equilibrium in a fluidized bed.............. 324
15.6.3. Fluid flow in a fluidized bed...................... 327
15.7. Application exercises............................. 329
Exercise 15.1: Distribution of particles in suspension and grain size
sorting resulting from settling.......................... 329
Exercise 15.11: Fluidization of a bimodal distribution of particles..... 330
Chapter 16. Movement of a Solid Particle in a Fluid Flow........... 331
16.1. Notations and hypotheses........................... 332
16.2. The Basset, Boussinesq, Oseen, and Tchen equation.......... 333
16.3. Movement of a particle subjected to gravity in a fluid at rest...... 336
16.4. Movement of a particle in a steady, unidirectional shear flow..... 339
16.5. Lift force applied to a particle by a unidirectional flow......... 341
16.5.1. Lift force exerted on a particle in a fluid flow
in an infinite medium............................... 342
16.5.2. Lift force exerted on a particle in the vicinity of a wall....... 346
16.6. Centrifugation of a particle in a rotating flow............... 350
Table of Contents xi
16.7. Applications to the transport of a particle in a turbulent flow or
in a laminar flow................................... 355
16.7.1. Application to laminar flows...................... 356
16.7.2. Application to turbulent flows..................... 356
Chapter 17. Centrifugal Separation......................... 359
17.1 Rotating flows, circulation, and velocity curl............... 360
17.2. Some examples of rotating flows...................... 364
17.2.1. Solid-body rotation in a rotating tank................. 364
17.2.2. Vortex flow................................. 366
17.2.3. Flow in a hydrocyclone......................... 369
17.3. The principle of centrifugal separation................... 377
17.4. Centrifuge decanters.............................. 381
17.4.1. Discontinuous centrifuge decanters.................. 381
17.4.2. Continuous centrifuge decanters.................... 383
17.5. Centrifugal separators............................. 385
17.6. Centrifugal filtration.............................. 388
17.7. Hydrocyclones................................. 391
17.7.1. Separation by a hydrocyclone of particles that are denser
than the fluid.................................... 392
17.7.2. Separation by a hydrocyclone of particles less dense
than the fluid.................................... 395
17.8. Energetics of centrifugal separation..................... 396
17.9. Application exercise.............................. 397
Exercise 17.1: Grain size sorting in a hydrocyclone............. 397
Chapter 18. Notions on Granular Materials.................... 401
18.1. Static friction: Coulomb s law of friction................. 402
18.2. Non-cohesive granular materials: Angle of repose, angle of
internal friction.................................... 403
18.3. Microscopic approach to a granular material............... 405
18.4. Macroscopic modeling of the equilibrium of a granular
material in a silo.................................... 407
18.5. Flow of a granular material: example of an hourglass.......... 413
Physical Properties of Common Fluids....................... 417
Index............................................ 419
|
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institution | BVB |
isbn | 9781848212817 184821281X |
language | English |
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physical | XV, 422 S. Ill., graph. Darst. 24 cm |
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spelling | Mory, Mathieu Verfasser aut Fluid mechanics for chemical engineering Mathieu Mory London ISTE 2011 Hoboken, NJ Wiley XV, 422 S. Ill., graph. Darst. 24 cm txt rdacontent n rdamedia nc rdacarrier Includes bibliographical references and index Chemical processes Fluid dynamics Strömungsmechanik (DE-588)4077970-1 gnd rswk-swf Strömungsmechanik (DE-588)4077970-1 s DE-604 HBZ Datenaustausch application/pdf http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=024794273&sequence=000004&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA Inhaltsverzeichnis |
spellingShingle | Mory, Mathieu Fluid mechanics for chemical engineering Chemical processes Fluid dynamics Strömungsmechanik (DE-588)4077970-1 gnd |
subject_GND | (DE-588)4077970-1 |
title | Fluid mechanics for chemical engineering |
title_auth | Fluid mechanics for chemical engineering |
title_exact_search | Fluid mechanics for chemical engineering |
title_full | Fluid mechanics for chemical engineering Mathieu Mory |
title_fullStr | Fluid mechanics for chemical engineering Mathieu Mory |
title_full_unstemmed | Fluid mechanics for chemical engineering Mathieu Mory |
title_short | Fluid mechanics for chemical engineering |
title_sort | fluid mechanics for chemical engineering |
topic | Chemical processes Fluid dynamics Strömungsmechanik (DE-588)4077970-1 gnd |
topic_facet | Chemical processes Fluid dynamics Strömungsmechanik |
url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=024794273&sequence=000004&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
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