CEP: September 2017 Coupling the traditional computational fluid dynamics (CFD) approach to model the fluid phase with the discrete element method (DEM) to model the particles creates a powerful numerical method to study multiphase particulate flows. See how CFD-DEM can be applied to modeling gas-solid multiphase systems. Other topics in this issue include human factors in alarm response, back to basics: boilers, and troubleshooting wastewater treatment. Editorial CEP on the Go Last month I wrote about some of the personal benefits of volunteering — such as better emotional and physical health, a lower risk of cognitive impairment as you age, and a perception of having more time on your hands — as well as the positive impacts volunteering can have on your career. And last month’s Your AIChE Benefits article (Aug. 2017, p. 75) explained the concept of micro-volunteering — i.e., quick, easy tasks that do not require a large investment of time. Read more Share CFD-DEM: Modeling the Small to Understand the Large September2017Computational MethodsRaymond Cocco, William D. Fullmer, Peiyuan Liu, Christine HrenyaCoupling the traditional computational fluid dynamics (CFD) approach to model the fluid phase with the discrete element method (DEM) to model the particles creates a powerful numerical method to study multiphase particulate flows. Plug the Holes in the Swiss Cheese Model September2017SafetyTodd Stauffer, P.E., Nicholas P. Sands, P.E., David Strobhar, P.E.Stop using operator error as an excuse. Apply human factors considerations to improve your alarm system and help operators respond to alarms effectively. Boiler Project Fundamentals September2017Back To BasicsJason L. BellThis article describes several variables to consider when selecting a steam boiler — from choosing a boiler configuration to understanding boiler water chemistry. Troubleshooting Wastewater Treatment Plants September2017Plant OperationsSeán MoranUse statistical analysis to find a cure for a “sick” wastewater treatment plant. Copyright Permissions: Would you like to reuse content from CEP Magazine? It’s easy to request permission to reuse content. Simply click here to connect instantly to licensing services, where you can choose from a list of options regarding how you would like to reuse the desired content and complete the transaction.