| Raman mixture composition and flow velocity imaging with high repetition rates. | |
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MedLine Citation:
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PMID: 21164804 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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A novel and completely tracer free strategy to image composition and velocity fields during the mixing process of two liquids is introduced. The achieved temporal resolution, spatial resolution and sampling rate of 30 ns, 54 x 54 µm2 and 10 kHz, respectively, are sufficient to resolve Kolmogorov time and length scales as well as transient mixing phenomena of many technical mixing processes. During the injection of liquid water into liquid ethanol, mixing was quantitatively observed by means of high repetition rate Raman imaging using a laser cluster for the excitation of the Raman process with 8 successive light sheet pulses. One high speed camera was used to detect the CH-vibration Raman band signal of ethanol, while a second one was used to detect the OH-vibration Raman band signal of water and ethanol. From the ratio of both, the mixture composition field was computed. The dense flow field was determined by processing the mixture composition images with a variational optical flow method. |
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Authors:
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Andreas Braeuer; Sascha Ronald Engel; Stefan Dowy; Sebastian Luther; Jürgen Goldlücke; Alfred Leipertz |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Optics express Volume: 18 ISSN: 1094-4087 ISO Abbreviation: Opt Express Publication Date: 2010 Nov |
Date Detail:
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Created Date: 2010-12-17 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101137103 Medline TA: Opt Express Country: United States |
Other Details:
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Languages: eng Pagination: 24579-87 Citation Subset: IM |
Affiliation:
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Lehrstuhl für Technische Thermodynamik and Erlangen Graduate School in Advanced Optical Technologies, Universität Erlangen-Nürnberg, Am Weichselgarten 8, 91058 Erlangen, Germany. andreas.braeuer@aot.uni-erlangen.de |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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