I have written a simple distributed volume counter-flow heat exchanger model.  I would like to add a simple model of ice deposition to it.  My approach is to somehow divide the flow out of a segment into a moist air flow and an ice flow and account for the ice flow as an accumulation of ice.  The frost layer will be thin so there is no need to model the impact of the ice on the heat transfer so there is no need to model this.  I have been trying to figure out how to use the Modelica.Media.Air.MositAir.Xsaturation library call to specify how much of the flow will be ice and how much will be moist air.

Can someone point me to a relevant example or paper that describes how to do this?