A numerical study of mixing in a novel impinging stream in-line mixer

Numerical simulations were performed to study fluid mixing in a novel two-d imensional in-line mixer utilizing multiple impinging stream inlets operate d in the laminar flow regime. Effects of the inlet jet Reynolds number as w ell as mixer geometry on the mixing characteristics are investigated and di scussed. Offsetting the top and bottom inlet jets is effective in improving the quality of mixing due to the presence of intense mixing zones between the inlet jets. It is found that the operating as well as geometric paramet ers affect mixing differently in different zones of the mixer. Results show that excellent fluid mixing is achievable over a rather short axial distan ce in this mixer. (C) 2001 Elsevier Science B.V. All rights reserved.