thanaphat p
TRANSCRIPT
ANSYSComputational Fluid & Dynamics (CFD)
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
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
ANSYS Computational Fluid & Dynamics (CFD)
“Mathematical Simulation for Pulverized Fuel Combustion”
Furnace & Burner Velocity Particle Trajectory Temperature Oxygen
ANSYSStatic Structural
ANSYS “Static Structural Simulation”
Material Properties
Slider
Clamper
Clamper (SST)
Kinematic HardeningYield 1,029 MPa
Simplified Model to FEA (Clamper and Slider)
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
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
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
SolidWorksTooling / Jig Fixture
SolidWorks “Tooling / Jig Fixture”
SolidWorks “Tooling / Jig Fixture”
Thank you
Thanaphat Phakdeeworrawong