Smith AG, Smith MW (Dstl) & Taylor K.
Prediction of flow and mass transfer in canister filters

Publication: PHOENICS User Conference, Melbourne

Canister filters typically comprise of a cylindrical body containing a packed bed of material which can adsorb toxic gases and vapours from the air. In previous work, pressure drop prediction capability was created based on linking the Ergun equation to the derived voidage distribution within the packed bed. An adsorption model has also been added using suitable source terms for a contaminant. This paper describes the application of these physical modelling techniques to a respirator canister. The geometry of the canister is defined as a PHOENICS BFC mesh and the flowfield is solved with transient, i.e. breathing, flow boundary conditions.

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