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Směrové charakteristiky vícesegmentových ED čidel pod vlivem zdánlivého skluzu při stěně
Wein, Ondřej
The direction-sensitive electrodiffusion (ED) probes consist of three working electrodes (segments), separated by thin insulated insertions. In common, the directional characteristics, ie. the ratios of individual limiting diffusion currents, are determined experimentally, using a suitable calibrator that generates a steady viscometric flow. It has been shown in that, at high enough Peclet number, the directional characteristics can be calculated from a front photograph of the probe via the linear theory of convective diffusion. In the present contribution, the original theory for a constant wall shear rate is generalized for a class of non-linear velocity profiles.

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