Articles | Volume 4, issue 1
J. Sens. Sens. Syst., 4, 239–247, 2015
https://doi.org/10.5194/jsss-4-239-2015
J. Sens. Sens. Syst., 4, 239–247, 2015
https://doi.org/10.5194/jsss-4-239-2015
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 et al.

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Latest update: 28 Sep 2022
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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.