CFD Simulation for Improving Selective Catalyst Reduction (SCR) After Treatment Devices
Tuesday, June 4, 2013

Selective Catalytic Reduction (SCR) is widely used within industry to help meet the challenging nitric oxide emissions requirements for diesel engines. There are a number of important criteria necessary for designing an efficient SCR system, including fast mixture preparation of the liquid urea-water solution and high ammonia uniformity at the SCR device.

The use of simulation to optimize the design of SCR devices is allowing engineers to improve NOx reduction, necessary for complying with aggressive emission standards.

This webcast covers new modeling techniques to improve calculations and overall accuracy of the devices. Presenters show how Computational Fluid Dynamics helps engineers to better understand the complex interactions between the liquid phase, the turbulent flow field and the hot surfaces of the exhaust system.

Attendees learn the benefits and ease of automating their models by incorporating fluid flow data, chemical reactions, thermal and structural analysis in a single process. Topics covered include:

  • Urea-water solution spray modeling
  • Droplet wall interaction modeling
  • Multi-component wall film modeling with phase change
  • Impact of numerical discretization and turbulent modeling on the mixing process
  • Deposit risk assessment

A live demonstration highlights how to optimize the uniformity of ammonia mass at the entrance of the catalytic SCR device to prevent too high localized concentration of urea.

Fred Ross
Thomas Lauer
Piyush Thackre
Speaker Company: 
Vienna University of Technology