Journal of Sensors and Sensor Systems
Journal of Sensors and Sensor Systems
JSSS
Articles | Volume 4, issue 1
Articles | Volume 4, issue 1
https://doi.org/10.5194/jsss-4-239-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/jsss-4-239-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
Articles | Volume 4, issue 1
Regular research article
 | 
18 Jun 2015
Regular research article |  | 18 Jun 2015

Novel microthermal sensor principle for determining the mixture ratio of binary fluid mixtures using Föppl vortices

B. Schmitt, C. Kiefer, and A. Schütze

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Short summary
A novel sensor principle for determining binary fluid mixtures of known components is presented. A bluff body is placed in the fluid channel, causing the formation of a stationary pair of vortices behind the body. The length of the vortex pair depends on the mixture’s viscosity and thus its composition. It is measured by placing a microheater in the vortex area and making use of forced convection which changes with the size of the vortices.
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