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Successful Urea/SCR system design requires capturing the composition and mixing upstream of the catalyst as well as the NOx reduction reactions that occur within the catalyst. CFD is the dominant tool for simulating the urea-water spray, filming, mixing and urea conversion upstream of the SCR catalyst. Surface chemistry kinetic tools using detailed chemistry are the dominant approach to evaluate what happens inside of the catalyst. This webinar video shows how to couple 3D CONVERGE CFD simulations with high fidelity 3D GT-SUITE surface chemistry simulations. CONVERGE CFD can accurately model the spray interactions with exhaust flows including multi-component atomization, filming, film evaporation, and urea decomposition to define the gas composition, flow conditions, and uniformity entering the SCR catalyst brick. GT-SUITE then couples to the non-uniform condition upstream of the catalyst from CONVERGE, allowing comprehensive surface chemistry calculations with a wide array of options. The coupled CONVERGE – GT-SUITE simulations offer timely, accurate data of real urea/SCR performance that aftertreatment engineers can use in their designs.

Who should watch this video:

  • Engine aftertreatment system engineers
  • CFD modeling engineers for urea/SCR systems
  • GT-SUITE engine aftertreatment simulation engineers
  • Product managers for powertrain and aftertreatment