Problem Specification:

Air at 300K enters through a porous medium (Aluminum foam) of 10mm thickness and height

100mm. the width of heating plate is 150mm

Air properties: (at 300K) Density = 1.177 (boussinesq approx. applied) Cp = 1004.9 K = 0.0262 Viscosity = 1.84e-05

Porous Material Properties: (Copper Foam) – 150*100*10

Density = 8900 Cp = 386 K = 386 Permeability = 1.41e-07 Porosity = 0.86 Form Drag Coefficient: 5.57

Geometry: 150*10 mm

Meshing Details:

Element size: 1mm

Total cells: 1500

Effective thermal Conductivity:

Nields model = Ke = (Kf^(porosity))+( Ks^(1-porosity))

Ke = 2.34 (calculated)

I have adjusted the thermal consuctivity of Solid such that the effective thermal conductivity

comes to 2.345

Results:

Contours

1) Pressure contour

2) Temperature Contour

3) Density Contour

Graphs/plots:

1) Centerline Temperature

2) Pressure along center

3) Wall Heat Flux Distribution:

Mean temperature Values at different heights:

height Temperature in K

10mm 348.61

20mm 349.86

30mm 349.99

40mm 349.99

50mm 350

60mm 350

70mm 350

80mm 350

90mm 350

100mm 350

Note:

1) The form drag coefficient value was entered as double the value in fluent as it uses

½*(density)*C*V^2 to compute pressure drop due to from drag wheras the measured

value is from the formulae (density)*C*V^2 alone.

2) Boussiensq approximation makes the density to remain same throughout

3) The height mentioned by you in previous mail was 100mm whereas renju Kurian has

mentioned the height to be 150mm. please clarify

Results for 3m/s:

Contours

Pressure contour

4) Temperature Contour

5) Density Contour

Graphs/plots:

4) Centerline Temperature

5) Pressure along center

6) Wall Heat Flux Distribution:

Mean temperature Values at different heights:

height Temperature in K

10mm 326.192

20mm 337.866

30mm 342.798

40mm 349.99

50mm 347.032

60mm 348.07

70mm 348.833

80mm 349.393

90mm 349.58

100mm 349.742