Promotion of Chemical Reactions by a Grid in a Shear Mixing Layer. Issue 12 (7th November 2014)

• Record Type: Journal Article
• Authors: Ito, Yasumasa; Sakai, Yasuhiko; Nagata, Kouji
• Is Part Of: Chemical engineering & technology. Volume 37:Issue 12(2014:Dec.)
• Page Start: 2103
• Page End: 2108
• Publication Date: 2014-11-07
• Subjects: Chemical engineering -- Periodicals; Chemical processes -- Periodicals; 660.05
• DOI: 10.1002/ceat.201300835
• Languages: English
• ISSNs: 0930-7516

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>The effects of a turbulence‐generating grid on fluid mixing and a passive chemical reaction are experimentally investigated in a liquid shear mixing layer under a nonpremixed condition. The grid is installed at three streamwise locations to find the optimal location to promote the chemical reaction. The results show that the grid generates disturbances at small scales that enhance fluid mixing and the chemical reaction. However, the turbulence intensity and mass diffusion in the mixing layers with the grid decrease rapidly and become even smaller than those in the mixing layer without the grid in a downstream region. Therefore, in the present study, the chemical production is maximized when the grid is installed at where the flow is turning to a developed mixing layer.</p> </abstract>