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Author Fujiwara, Tamio ♦ Urata, Takumi ♦ Ohue, Hiroshi
Source SpringerLink
Content type Text
Publisher Springer-Verlag
File Format PDF
Copyright Year ©2012
Language English
Subject Domain (in DDC) Technology ♦ Engineering & allied operations
Subject Keyword Visualization ♦ Concentration ♦ Mixing ♦ Methylene blue ♦ Micromixer ♦ Microreactor ♦ Microchannel ♦ Classical Continuum Physics ♦ Engineering Fluid Dynamics ♦ Engineering Thermodynamics, Heat and Mass Transfer ♦ Computer Imaging, Vision, Pattern Recognition and Graphics
Abstract During the development of micromixers and microreactors, it is important to assess the concentration field and mixing status in their microchannels. Therefore, this study establishes a visualization method for evaluating the concentration field using images of dilution of a methylene blue solution with water. Noted that the original methylene blue solution is deep blue before it is mixed with water; it becomes paler once it is diluted, as observed against a white background. Because the methylene blue concentration has a highly reliable relationship with the saturation of the captured color, the local methylene blue concentration can be determined on the basis of a calibration result obtained in advance. The saturation value is affected not only by the concentration but also by the optical effect of the channel walls. Therefore, we established a method of eliminating the channel wall effect. As a trial, we estimated the concentration field in our novel microreactor using the proposed visualization method and estimated the mixing status in the microchannel. We showed that the proposed visualization method effectively estimated the concentration field and mixing status in micromixers and microreactors.
ISSN 13438875
Age Range 18 to 22 years ♦ above 22 year
Educational Use Research
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2012-03-28
Publisher Place Berlin, Heidelberg
e-ISSN 18758975
Journal Journal of Visualization
Volume Number 15
Issue Number 3
Page Count 9
Starting Page 197
Ending Page 205


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Source: SpringerLink