Annular Ultraviolet Reactor, Optically Transparent Water

Application ID: 110991

Fluence rate is a key parameter for ultraviolet (UV) water purifier. It describes the amount of radiation that pathogens absorb and is then directly related to the disinfection level of the purifier.

The aim of this example is to demonstrate the fluence rate calculation with the Surface-to-Surface Radiation interface from the Heat Transfer module. It models an ultraviolet water purifier consisting of a cylindrical lamp surrounded by a cylindrical reactor. The annular region in between represents the water flowing through the purifier. In this model, only the fluence rate is calculated with no consideration for the water flow.

This model example illustrates applications of this type that would nominally be built using the following products: