Today's ANSYS: Analysis of Water Purification Treatment Using UV Sterilization Equipment

Introduction to the analysis of water purification treatment using ultraviolet sterilization devices.

I would like to introduce information that highlights how CAE and CFD are beneficial to society, along with interesting application examples, primarily through articles from the information magazine "ADVANTAGE" published by ANSYS, Inc. and ANSYS Japan Co., Ltd. This time, I will discuss the analysis of water purification treatment using ultraviolet sterilization devices. ANSYS Fluent is equipped with numerous radiation models, and in this case, we will simulate using the DO model and model various microorganisms with DPM (Lagrangian), which is a somewhat unique example. When I first saw this case, I thought it might not fall within the realm of CFD (fluid analysis), but depending on how it is used, there seems to be potential for increased applications. We will incorporate the total amount of ultraviolet light (UV Dose) that bacteria receive while flowing through the ultraviolet sterilization device using a UDF (User Defined Function). In the tap water we use and drink in our daily lives, ultraviolet irradiation devices are reportedly always used for sterilization (to kill chlorine-resistant bacteria such as Cryptosporidium). In other words, if we could improve the sterilization efficiency by even an average of 1% at the countless water purification plants across the country, it would create a significant impact.

Scientific Calculation and Simulation Softwareothers