Chaotic Analysis of the Concentration Field in a Submerged Impinging Stream Mixer

• Published in: Chemical engineering & technology Vol. 38; no. 9; pp. 1530 - 1536
• Main Authors: Zhang, Jianwei, Dong, Xin, Ma, Hongyue, Li, Xiaoming, Feng, Ying
• Format: Journal Article
• Language: English
• Published: Weinheim WILEY-VCH Verlag 01.09.2015; WILEY‐VCH Verlag
• Subjects: Chaos theory; Chemical engineering; Concentration field; Impinging stream mixer; Inlet flow; Microcosmic mixture; Mixers; Nozzles; Planar laser induced fluorescence; Streams; Submerged
• ISSN: 0930-7516; 1521-4125
• DOI: 10.1002/ceat.201400406

The concentration field was measured with various nozzle diameters, nozzle distances, and inlet flow rates in a submerged impinging stream mixer (SISM) using planar laser‐induced fluorescence to obtain characteristic parameters such as correlation dimension, Kolmogorov entropy, and Lyapunov exponents that describe the chaos phenomenon and reflect the microcosmic mixture effect of a SISM by mean of the chaos theory. The chaotic characteristic parameters were influenced significantly by different nozzles distances, nozzle diameters, and inlet flow rates and their distributions followed a similar changing regularity by which all parameters decreased with larger nozzle diameter and increased with higher inlet flow rate. The chaos theory is applied to analyze the concentration signal of a flow field. In order to study the abundant information of concentration signals in a submerged impinging stream mixer, planar laser‐induced fluorescence was applied to measure its 2D concentration field. Operating conditions were varied to obtain the optimal microcosmic mixture effect.