3D species transport model -- CFD Online Discussion Forums

April 21, 2004, 15:41	3D species transport model	#1
co2 Guest Posts: n/a	A cylindrical tank contains grain at the bottom. Grain is modeled as porous zone Tank walls are thin but are modeled as solid zone for sun radiation calculations (Heat source terms are specified in the tank walls to account for sun radiation) Grain liberates co2 gas due to grain respiration Heat is also liberated during grain respiration and has been incorporated in the engery source term in porous zone pannel I am using mixture template consisting of co2 + O2 + N2 There are no reactions involved I am using species model question: Do I need to turn volumetric reactions ON or OFF? question: I know diffusivity of co2 in air is 1.65e-5 -- Can I specify the this value for diffusivity in the mixture template?

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