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Fluent
1
2 ()
3
4 PLOT REPORT
1
2
3
FLUENT
/
FLUENT
19.2-19.5 19.6-19.13
19.1.2
19.2.2
19.2.2
19.2.2
19.1.3
FLUENT -
10-12%10-12%
/
FLUENT
1.
2.
3.
4.
FLUENT
Operating Conditions
19.2.1
FLUENT
x
u up rp
dpRe
1-10Stokes'[ 170]
F D
CcStokes'Cunningham
110
Snij, [ 135]
P611
19.2-1 Fx
DT , p
Talbot [ 237]
Kn = Knudsen= 2/d p
l =
K = k/ k p
k = =15/4R
kp=
CS = 1.17
Ct= 2.18
Cm = 1.14
mp =T = =
/
19.2-1
19.2-1
:
p19.2-21 19.2-22
19.2-12 19.2-13
Spalart-Allmaras
FLUENT
tuu '
number of tries
FLUENT
Discrete Random Walk (DRW)
-
CL19.2-28
19.2-36
Set Injection Properties
Spalart-Allmaras
()
LitchfordJeng [141]BaxterSmith [15]Jain [ 99]
txi
m
Set Injection Properties
19.9.15
19.7.1
11.3-20
Particle Radiation Interaction19.11.2
P
19.7.2
19.2-14
Particle Radiation Interaction19.11.2
7.3 /
, \ Coupled
Heat-Mass Solution FLUENT ODE
.
19.7.4
19.2.1
Discrete Phase Model panel.
Brownian Motion3Drag
Parameters Drag Law Stokes-Cunningham
19.7.5 Saffman
Saffman
19.2.1Discrete Phase Model panel
Saffman Lift Force
19.7.7
Drag Parameters Drag Law
spherical, non-spherical, Stokes-Cunningham, high-Mach-number
19.2.1dynamic-drag19.4.4
19.8.2
spherical high-Mach-number dynamic-drag
nonspherical
Shape Factor19.2-7 fCunningham
Cunningham Correction factor 19.2-9 Cc
19.8
19.9
Overview of Initial Conditions
Injection Types
Particle Types
Creating, Copying, Deleting, and Listing
Injections
Defining Injection Properties
Point Properties for Single Injections
Point Properties for Group Injections
Point Properties for Cone Injections
Point Properties for Surface Injections
Point Properties for Plain-Orifice Atomizer
Injections
Point Properties for Pressure-Swirl
Atomizer
Injections
Point Properties for Air-Blast/Air-Assist
Atomizer Injections
Point Properties for Flat-Fan Atomizer
Injections
Point Properties for Effervescent Atomizer
Injections
Modeling Turbulent Dispersion of Particles
Custom Particle Laws
Defining Properties Common to More
Than One Injection
19.9.1 Overview of Initial Conditions
FLUENT
x, y, z
u,v,w
19.9.8
d p
T p
m p
19.2
19.3
19.9.2
injection
FLUENT 10
single
group
cone (only in 3D)
surface
plain-orifice atomizer
pressure-swirl atomizer
flat-fan atomizer
air-blast atomizer
effervescent atomizer
read from a file
19.9.1
19.9.3 19.9.5
Models
``inert''19.2-1
119.3.2FLUENT
``droplet''
1 2 3
19.3.319.3.4
Materials panel,19.25
``combusting''19.2-1
1 4 19.3.5
5 19.3.6
6 Set Injection Properties
panelWet Combustion
23
19.3.319.3.4
Materials
panel
19.9.5
19.9.4 Set Injection
Properties panel19.9.5
Set...
14
1. Injection Name
19.9.4
2. 19.9.2 ( single,
group, cone, surface, plain-orifice-atomizer, pressure -swirl-atomizer,
air-blast-atomizer, flat-fan-atomizer, effervescent-atomizer, and file
Materials
surface injections
3. single group, cone
atomizerNumber of Particle
StreamsRelease From Surfaces
Set Injection Properties panel
File...
4. Particle TypeInert, Droplet, or Combusting19.9.3
5. Material
19.11.2 7.1.2
6. group or surface
groupgroup Diameter
Distributionrosin-rammlerrosin-rammler-logarithmic
19.9.7 group
7. Laws
Custom 19.9.16
8. InertDropletEvaporating Species
23
CombustingDevolatilizing Species
4 5
Oxidizing Species
Product Species
multiple-surface -reaction
Oxidizing Species Product Species
9. Point Properties
19.9.619.9.14
10. Turbulent Dispersion
Stochastic ModelCloud Mode
19.9.15
11. Wet CombustionWet
CombustionLiquid Material
Liquid Fraction
Evaporating Species
12. UDF
User-Defined Functions
UDF Manual
19.9.15
19.9.5
the``number of tries''.19.2.2
1. Set Injection Properties Turbulent Dispersion
2. Stochastic Tracking Stochastic Model
3. Number Of Tries
FLUENT19.2-1
1 FLUENT
19.2-201
23
1
19.2-37Random
Eddy Lifetime19.2-28CL
0.15RSM0.319.9.9
0
19.9.10>0
19.2.2
1. Set Injection Properties Turbulent Dispersion
2. Cloud TrackingCloud Model
3. Min. Cloud
DiameterMax. Cloud Diameter.
19.10
FLUENT
19.10.1
19.2
19.10.1
22 ``Reflect''
[ 236]
v n12
vt
1.0
0.0
``reflect''1
19.10.1
1.0
``trap''``trapped''
``escape''``escaped''19.10.3
``interior''
FLUENT
FLUENT ;
wallsymmetryaxis``reflect''
1.0
-pressure inlets-velocity inlets
-pressure outlets ``escape''
- radiator- porous jump
wall
19.10.2
Boundary Conditions
19.10.4
Discrete Phase Model Conditions Boundary Cond. Type
Select reflect, trap, escapeDPM
Discrete Phase Model Conditions
interiorinterior
wall reflect wall
Discrete Phase Reflection Coefficients
constantpolynomial piecewise-linear
piecewise-polynomial
19.11.2
19.9
.
:inert-particle, droplet-particle,combusting-particle
(Set Injection Properties Set Multiple Injection
Properties ,19.9),Materials
panelMaterial Type
!!,,Materials
Material Type.,
(19.9),,.
,,(.
).
Materials panel (Set Injection
Properties Set Multiple Injection Properties ,19.9.5,19.9.17)
.
.,
19.11.1-19.11.4.
Density
Cp
CpCp
7.1.3
Thermal Conductivity
W/m-KBtu/ft-h-F
FLUENT
Latent Heat:
h fg19.3-17
19.3-58J/kg
Btu/lbmFLUENT
Thermophoretic Coefficient:
19.2-14 DT,pthe
Discrete Phase Model Thermophoretic Force 19.2.1
FLUENT Talbot [237]
talbottalbot-diffusion-coeff
Thermophoretic Coefficient
7.1.3
Particle Emissivity
pP-1
19.3-319.3-1719.3-5819.3-78
Discrete Phase Model panel Particle Radiation Interaction
1.00.5[143]
Particle Scattering Factor
P-111.3-20fp
Discrete Phase Model panel Particle Radiation Interaction
fp0.9[143]
19.12
19.2-1
/
19.3
19.12.119.12.2
19.12.319.12.4
Parameters Controlling the Numerical Integration
Performing Trajectory Calculations
Resetting the Interphase Exchange Terms
Parallel Processing for the Discrete Phase Model
19.12.1
Discrete Phase Model panel Tracking Parameters
DefineModels Discrete Phase...
19.7.4
19.2.1
Discrete Phase Model panel.
Brownian Motion3Drag
Parameters Drag Law Stokes-Cunningham
19.7.5 Saffman
Saffman
19.2.1Discrete Phase Model panel
Saffman LiftForce
Saffman
Max. Number Of Steps
19.2-119.2-21
FLUENT
incomplete
500
109
Length Scale
FLUENTL
upuc
L19.12-1
Specify Length ScaleDiscrete Phase Model
Length Scale
Step Length Factor
Length Scale
the Length ScaleSpecify Length Scale
FLUENT
t*FLUENT
t
Step Length Factor19.12.2
20
D
D
19.12.2
1.
2.
19.12.2
19.13
19.12.27
FLUENT
1.
2.
3.
4.
5.
19.12.3 /
FLUENT/
FLUENT
1.
2. Discrete Phase Model panelInteraction with Continuous Phase
3. Number Of Continuous Phase Iterations Per DPM Iteration
5
0FLUENT
Iterate panelFLUENT
iter continuity x-velocity y-velocity k epsilon energy time/ite
314 2.5249e-01 2.8657e-01 1.0533e+00 7.6227e-02 2.9771e-02 9.8181e-03 0:00:05
315 2.7955e-01 2.5867e-01 9.2736e-01 6.4516e-02 2.6545e-02 4.2314e-03 0:00:03
DPM Iteration ....
number tracked= 9, number escaped= 1, aborted= 0, trapped= 0, evaporated = 8, i
Done.
316 1.9206e-01 1.1860e-01 6.9573e-01 5.2692e-02 2.3997e-02 2.4532e-03 0:00:02
317 2.0729e-01 3.2982e-02 8.3036e-01 4.1649e-02 2.2111e-02 2.5369e-01 0:00:01
318 3.2820e-01 5.5508e-02 6.0900e-01 5.9018e-02 2.6619e-02 4.0394e-02 0:00:00
solve/dpm-update
Set Injection Properties panel Number of Tries
19.9.15
0n1n
19.12.3
0
0
SolveInitializeReset DPM Sources
Reset DPM Sources 0
19.13
FLUENT
/
19.13.1 Graphical Display of Trajectories
19.9 Particle Tracks panel
19.13.1
Display Particle Tracks...
29
1. Release From Injections
2. Discrete Phase Model panel
19.12.1DefineModelsDiscrete Phase...
Set Injection Properties
19.9.15
3.
4. ComputeCompute
StartStop
5. DisplayPulse
PulseStopStop
6. Display
Stylepoint
Pulse
Injections panel
19.9.4
Define Injections...
FLUENT
ID
1. Particle Tracks panel.Track Single Particle Stream
2.
x y
25.14
Color ByParticle Variables...
/Update Min/Max
FLUENT
19.13.2
FLUENT
DPM Iteration ....
number tracked = 7, escaped = 4, aborted = 0, trapped = 0, evaporated = 3, incoDone.
Track
Escaped''
Incomplete''
Discrete Phase Model panel Max. Number Of Steps
19.12.1
1. 19.13.1 12
2. Report TypeSummaryDisplay Track
Report toFileWrite...Display
Select File dialog box
19.13.3
1. 19.3.1 12 Track Single Particle
Stream
2. Report TypeStep By Step
3. Report to FileDisplayWrite...
4. Significant Figures
5. Write...Select File dialog box.
Report toConsoleDisplay
Track
Time X-Position Y-Position Z-Velocity X-Velocity Y-Velocity Z-Veloc
0.000e+00 1.411e-03 3.200e-03 0.000e+00 2.650e+01 0.000e+00 0.000e
3.773e-05 2.411e-03 3.200e-03 0.000e+00 2.648e+01 0.000e+00 0.000e
5.403e-05 2.822e-03 3.192e-03 0.000e+00 2.647e+01 0.000e+00 0.000e
9.181e-05 3.822e-03 3.192e-03 0.000e+00 2.644e+01 0.000e+00 0.000e
1.296e-04 4.821e-03 3.192e-03 0.000e+00 2.642e+01 0.000e+00 0.000e
1.608e-04 5.644e-03 3.192e-03 0.000e+00 2.639e+01 0.000e+00 0.000e
. . . . . . .
. . . . . . .
. . . . . . .
elocity Y-Velocity Z-Velocity Diameter Temperature Density Mass
650e+01 0.000e+00 0.000e+00 2.000e-04 3.000e+02 1.300e+03 5.445e-09
648e+01 0.000e+00 0.000e+00 2.000e-04 3.006e+02 1.300e+03 5.445e-09
647e+01 0.000e+00 0.000e+00 2.000e-04 3.009e+02 1.300e+03 5.445e-09
644e+01 0.000e+00 0.000e+00 2.000e-04 3.015e+02 1.300e+03 5.445e-09
642e+01 0.000e+00 0.000e+00 2.000e-04 3.022e+02 1.300e+03 5.445e-09
639e+01 0.000e+00 0.000e+00 2.000e-04 3.027e+02 1.300e+03 5.445e-09
. . . . . . .
. . . . . . .
. . . . . . .9.
19.13.4
ParticleTracks panelReport TypeCurrent Positions
1. 19.3.1 12 Track Single Particle
Stream
2. Report TypeCurrent Position
3. Report to File Display Write...
4. Significant Figures
5. Write...Select File dialog box.
Time X-Position Y-Position Z-Position X-Velocity Y-Velocity Z-Veloc
0.000e+00 1.000e-03 3.120e-02 0.000e+00 1.000e+01 5.000e+00 0.000e
1.672e-05 1.168e-03 3.128e-02 0.000e+00 1.010e+01 4.988e+00 0.000e
3.342e-05 1.337e-03 3.137e-02 0.000e+00 1.019e+01 4.977e+00 0.000e
5.010e-05 1.508e-03 3.145e-02 0.000e+00 1.028e+01 4.965e+00 0.000e
6.675e-05 1.680e-03 3.153e-02 0.000e+00 1.038e+01 4.954e+00 0.000e
8.338e-05 1.854e-03 3.161e-02 0.000e+00 1.047e+01 4.942e+00 0.000e
. . . . . . .
. . . . . . .
. . . . . . .
elocity Y-Velocity Z-Velocity Diameter Temperature Density Mass
000e+01 5.000e+00 0.000e+00 7.000e-05 3.000e+02 1.300e+03 2.335e-10
010e+01 4.988e+00 0.000e+00 7.000e-05 3.009e+02 1.300e+03 2.335e-10
019e+01 4.977e+00 0.000e+00 7.000e-05 3.019e+02 1.300e+03 2.335e-10
028e+01 4.965e+00 0.000e+00 7.000e-05 3.028e+02 1.300e+03 2.335e-10
038e+01 4.954e+00 0.000e+00 7.000e-05 3.037e+02 1.300e+03 2.335e-10
047e+01 4.942e+00 0.000e+00 7.000e-05 3.046e+02 1.300e+03 2.335e-10
. . . . . . .
. . . . . . .
19.13.5
FLUENT
Discrete Phase Model...
s Source
4
/
27
19.13.1 19.13.2
19.13.6
Sample Trajectories panel 19.13.2
ReportDiscretePhase Sample...
19.13.2
1.
2. Boundaries
PlanesLines
3. ComputeStart
StopCompute
.dpm
Start
Stop
Compute
Append FilesAccumulate Erosion/Accretion Rates
19.13.8
Output
19.13.7
Trajectory Sample Histograms panel 19.13.3 Sample
Trajectories panel
19.13.6
Report Discrete Phase Histogram...
30
1. Read...
Sample
2. SampleFields
3. Plot
y OptionsPercent
Divisions
Delete Compute Min/Max