Temperature Distribution and Heat Flux of a Furnace
Prof. Charlton S. Inao
FEA Thermal Analysis
CONDUCTION
CONVECTION
RADIATION
Given Data:• Outer Wall, 300 x 300• Inner Wall , 120 x 120• Furnace opening , 100x 100• Kc= 0.01 W/mK, thermal conductivity of the concrete wall (Mat’l No. 1)• Kb=0.0057 W/mK, thermal conductivity of the brick wall (Material
No.2)• T=673 K temp within the furnace• K1= 0.208 W/m2K, convection heat transfer coefficient in the furnace
• Ta= 253 K temperature of the surrounding air, where the outside wall is exposed to.
• K2=0.068 W/m2K, convection heat transfer coefficient of the outside wall and the surrounding air
Define Element types
Thermal conductivity for material No.1
Thermal conductivity for Material No. 2Click Material (pull down menu), then New Model
Modeling of a Furnace
Outline of Brick and Concrete Wall
Define Mesh Size Controls
Glue the areas, after performing mesh size controls,
Before meshing is done, it is necessary to specify
material numbers for theconcrete and the brick
walls.
From ANSYS Main Menu select Preprocessor →Meshing →Mesh
Attributes→ Picked Areas.
Specify Material Numbers for the Concrete(1) and Brick (2) Walls
Material Number for Concrete WallPreprocessor >Meshing>Mesh Attribute>Pick Areas
Material Number for Brick Wall
After defining the two areas, we can now Mesh the area., free
Be sure material numbering is ON, in Plot Controls ,Numbering, Attribute Numbering, Material Number
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