Sub-models for the formation of insoluble material or for describing th stcikiness of particles have been added to DrySim Three industrial dryers , For example to obtain a better product quality , a higher capacity or to reduce fouling.

Case study I

DrySim model simulations are widely used at the request of the dairy industry and suppliers of drying equipment to simulate existing spray dryers or new designs . About 50 soray dryer configurations have ben simulated up to now .An example is the simulation of an existing spray dryer with rotary-wheel atomisation.This dryer sometimes exhibited strange behaviour, and a short cut air-flow from the inlet to the outlet was suspected by the operators .According to the supplier , a short cut flow was out of the question. TO get a better understandinng of the bahaviour ,Simulations were carried out .