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PortfolioThanaphat Phakdeeworrawong

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Email: pkthanaphat@gmail.com

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