Enhanced mass and heat transfer in catalytic reactors
Artikel i vetenskaplig tidskrift, 2013

Mass and heat transfer in square ducts with one side containing a porous wall were simulated using large eddy simulation (LES). Increased wall normal turbulent intensity was observed along the porous wall compared to the smooth wall. Depending on the wall permeability the fluid elements penetrated to different depth resulting in enhanced mass and heat transfer rates. The larges effect was obtained for mass transfer in liquids with up to 20 times larger mass transfer rate, compared to smooth surfaces. An increased penetration into the porous wall was obtained with more open porous structure and with fluids having high density and low viscosity. Most benefit of the porous walls is obtained for fluids with high rho/mu ratio and high Pr or Sc numbers i.e. for mass transfer in liquids.

duct

Mass and heat transfer

numbers

flow

Structured catalyst

Författare

Ronnie Andersson

Chalmers, Kemi- och bioteknik, Kemisk reaktionsteknik

Bengt Andersson

Chalmers, Kemi- och bioteknik, Kemisk reaktionsteknik

Catalysis Today

0920-5861 (ISSN)

Vol. 216 117-120

Ämneskategorier

Kemiteknik

Kemi

DOI

10.1016/j.cattod.2013.05.027

Mer information

Skapat

2017-10-07