anybody know the physical meanings of energy equation for porous medium ?help me pls.i need a good case about porous medium.

Try these, may be it is helpful:

Nield, D.A.; Bejan, A.: Convection in Porous Media, 2nd ed. New York, Springer, 1999

Vafai, K.(ed.): Handbook of Porous Media, Mercel Dekker, New York, 2000

Ene, H.I.; Polisevscki, D.: Thermal Flow in Porous Media, Reidel, Dordrecht, 1987

Ingham, D.B.; Pop, I. (eds.): Transport Phenomena in Porous Media, Pergamon, Oxford, 1998, Vol. 2, 2002.

If you are referring to the implementation of the porous medium in FLUENT, there is no impact on the energy equation. FLUENT only applies an additional sink term to the momentum equation.

look at fluent manual, section 6.19.3: "Treatment of the Energy Equation in Porous Media"

"FLUENT solves the standard energy transport equation in porous media regions with modifications to the conduction flux and the transient terms only."

Also "The effective thermal conductivity in the porous medium is computed by FLUENT as the volume average of the fluid conductivity and the solid conductivity"

[vittal]

hello
i am modelling porous media using discrete phase model.
I am unable to calculate permeability
I know velocity 5.6 m/s
pressure 5600pa
thickness of porous medium 0.15mm
droplet diameter 0.5 mm

Originally Posted by Ralf Schmidt
;116504

look at fluent manual, section 6.19.3: "Treatment of the Energy Equation in Porous Media"

"FLUENT solves the standard energy transport equation in porous media regions with modifications to the conduction flux and the transient terms only."

Also "The effective thermal conductivity in the porous medium is computed by FLUENT as the volume average of the fluid conductivity and the solid conductivity"