Relating Pore Scale DPF Models to Macroscopic Filter Behavior

Heather  Dillon, Pacific Northwest National Laboratory

Many aspects of diesel particulate filter behavior, both during loading and regeneration, are ultimately determined by mechanisms which take place at the microscopic scale of substrate pores. Recent attempts to model filtration and regeneration at this length scale may provide valuable insights, but only if micro-scale phenomena can be successfully related to observable macro-scale operating parameters. Ideas for making this critical transition in modeling efforts will be introduced for discussion.