Patent ID: 8459017

Claim:
A method of mixing a flow of exhaust flowing along a flow axis including the step(s) of: rearranging the flow of exhaust along the flow axis via a mixer arrangement coaxial to the flow axis, the exhaust made up entirely of combusted gases, wherein rearranging the flow of exhaust includes the steps of: directing a first portion of the flow radially outward away from the flow axis by passing the first portion of the flow only over a plurality of first flow directing tabs, of the mixer arrangement, that are convex to the flow axis, and directing a second portion of the flow radially inward toward the flow axis by passing the second portion of the flow only over a plurality of second flow directing tabs, of the mixer arrangement, that are concave to the flow axis; and wherein the steps of directing the first and second portions includes separating the first portion into a plurality of first segments and directing the first segments radially outward and separating the second portion into a plurality of second segments and directing the second segments radially inward, wherein the step of rearranging includes increasing the surface area between the first and second portions.