Experimental investigation of a scaled-up passive interdigital micromixer with circular-sector mixing elements

Kristina Cook, Yan Feng Fan, Ibrahim Hassan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Flow patterns and mixing phenomena are investigated qualitatively in a planar passive scaled-up micromixer using flow visualization over 5 ≤ Re ≤ 200. To promote molecular diffusion, the test section utilizes an uneven interdigital inlet which reduces the diffusion path and enhances mixing at the side walls. Five circular sector obstructions located along the channel length serve to divide and recombine the flow, as well as induce Dean vortex formation at high Reynolds numbers. Induced fluorescence is used to provide a quantitative estimate of mixing efficiency at certain Reynolds numbers. A decreasing-increasing trend in mixing efficiency is observed with increasing Reynolds numbers, marking the transition from mass diffusion dominance to mass advection dominance. The design operates well at higher Reynolds numbers, where the dominant mixing mechanism is mass advection.

Original languageEnglish
Title of host publicationASME/JSME 2011 8th Thermal Engineering Joint Conference, AJTEC 2011
Publication statusPublished - 2011
Externally publishedYes
EventASME/JSME 2011 8th Thermal Engineering Joint Conference, AJTEC 2011 - Honolulu, HI, United States
Duration: 13 Mar 201117 Mar 2011

Other

OtherASME/JSME 2011 8th Thermal Engineering Joint Conference, AJTEC 2011
CountryUnited States
CityHonolulu, HI
Period13/3/1117/3/11

Fingerprint

Reynolds number
Advection
Flow visualization
Flow patterns
Vortex flow
Fluorescence

ASJC Scopus subject areas

  • Energy Engineering and Power Technology

Cite this

Cook, K., Fan, Y. F., & Hassan, I. (2011). Experimental investigation of a scaled-up passive interdigital micromixer with circular-sector mixing elements. In ASME/JSME 2011 8th Thermal Engineering Joint Conference, AJTEC 2011

Experimental investigation of a scaled-up passive interdigital micromixer with circular-sector mixing elements. / Cook, Kristina; Fan, Yan Feng; Hassan, Ibrahim.

ASME/JSME 2011 8th Thermal Engineering Joint Conference, AJTEC 2011. 2011.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Cook, K, Fan, YF & Hassan, I 2011, Experimental investigation of a scaled-up passive interdigital micromixer with circular-sector mixing elements. in ASME/JSME 2011 8th Thermal Engineering Joint Conference, AJTEC 2011. ASME/JSME 2011 8th Thermal Engineering Joint Conference, AJTEC 2011, Honolulu, HI, United States, 13/3/11.
Cook K, Fan YF, Hassan I. Experimental investigation of a scaled-up passive interdigital micromixer with circular-sector mixing elements. In ASME/JSME 2011 8th Thermal Engineering Joint Conference, AJTEC 2011. 2011
Cook, Kristina ; Fan, Yan Feng ; Hassan, Ibrahim. / Experimental investigation of a scaled-up passive interdigital micromixer with circular-sector mixing elements. ASME/JSME 2011 8th Thermal Engineering Joint Conference, AJTEC 2011. 2011.
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