thanaphat p
TRANSCRIPT
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ANSYSComputational Fluid & Dynamics (CFD)
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ANSYS Computational Fluid & Dynamics (CFD)
“Mathematical Simulation for Pulverized Fuel Combustion”
Overall Structure of Furnace
Structure of Burner
Schematic Diagram of The Burner for Simulation
The pattern of flow in combustion burner
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ANSYS Computational Fluid & Dynamics (CFD)
“Mathematical Simulation for Pulverized Fuel Combustion”
Proximate analysis
Volatile
Fixed carbon
Moisture
Ash
(% mass)
35.8
53.7
6.3
4.2
Ultimate analysis
Carbon
Hydrogen
Nitrogen
Sulphur
Oxygen
(% mass)
83.1
4.35
1.29
1.55
9.71
Particle Size Distribution (µm)
0-10
10-25
25-40
40-75
>75
(% mass)
15.0
25.0
20.0
20.0
20.0
Gross calorific value (MJ/kg) 29.29
Central pipe: Air flow rate (kg/s)
Swirl number
Temperature (K)
2.925 x 10-4
0.0
353
Primary pipe: Air flow rate (kg/s)
Swirl number
Temperature (K)
Coal feed rate (kg/s)
9.344 x 10-3
0.0
353
0.39 × 10-2
Secondary pipe: Air flow rate (kg/s)
Swirl number
Temperature (K)
3.537 x 10-2
1.03
573
Excess air (%) 15
CHARACTERISTICS OF BITUMINOUS COAL FURNACE OPERATING CONDITION
Kinetic parameters :
Devolatilization Activation Energy, (J/kg-mol)
Pre-Exponential Factor
7.40 × 107
3.82 x 105
Char Reaction Activation Energy, (J/kg-mol) 7.90 x 107
KINETIC PARAMETERS FOR COAL COMBUSTION
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ANSYS Computational Fluid & Dynamics (CFD)
“Mathematical Simulation for Pulverized Fuel Combustion”
Furnace & Burner Velocity Particle Trajectory Temperature Oxygen
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ANSYSStatic Structural
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ANSYS “Static Structural Simulation”
Material Properties
Slider
Clamper
Clamper (SST)
Kinematic HardeningYield 1,029 MPa
Simplified Model to FEA (Clamper and Slider)
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ANSYS “Static Structural Simulation”
Config. Node Element Min. Qual Max.Qual Avg. Qual
Clamper 1.0 19,314 12,528 0.057 0.999 0.948
Hexahedral meshing
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ANSYS “Static Structural Simulation”
Fix all DOF at
welding spots
Non-linear
solver is applied
Augmented-Lagrange formula
Friction Coefficient = 0.5Displacement load on
slider surface
6 loading step, max displacement
up to 0.150 mm
Loading / Constraint / Contact / Solver
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0
100
200
300
400
500
600
700
800
900
0 0.02 0.04 0.06 0.08 0.1 0.12 0.14 0.16
ST
RE
SS
(M
PA
)X - DEFORMATION (MM)
Total Stress1.0
0
100
200
300
0.00 0.02 0.04 0.06 0.08 0.10 0.12 0.14 0.16
ST
IFF
NE
SS
(G
/MM
)
X - DEFORMATION (MM)
X - Stiffness1.0
ANSYS “Static Structural Simulation”
Results
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SolidWorksTooling / Jig Fixture
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SolidWorks “Tooling / Jig Fixture”
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SolidWorks “Tooling / Jig Fixture”
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Thank you
Thanaphat Phakdeeworrawong