Here are some comments on the Mathematica file (PFR/MFR.nb) that illustrates the concepts of “earliness of mixing” (mixed flow followed by plug flow; “keep the concentration as low as possible”) and “lateness of mixing” (plug flow followed by mixed flow; “keep the concentration as high as possible”).

 

Page 1

Page 2

Page 3

Page 4

Page 5

Page 6

Page 7

Page 8

Page 9

Page 10

 

LRR3@psu.edu