Numerical Simulation of Soot Trapping Process and Manufacturing of Three-Way Catalyzed Membrane Filter.

Soot trapping on GPF, TWC Membrane fabrication on GPF, and soot trapping on TWC membrane have been studied using computer numerical simulation. The results of pressure drop, filtration efficiency, and morphology visualization satisfied the experimental results. The simulation could clarify the trapping phenomena up to 3D-nanoscale resolution, which overcame an experimental limitation. Visualization revealed the particles first trapped on the substrate generating a dendrite structure at the constricted area. Then, it expanded by accumulating flying particles until the bridge structure was completed, which is the same point of 100% filtration efficiency that proved the hypothesis from the experiment. [ABSTRACT FROM AUTHOR]