Editing Measurement of Near-Bed Velocity and Bottom Shear Stress by Ferrofluids

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[[Image:UC FERR 05.png|thumb|center|650px|'''<xr id="fig:tank01" />''': Plan of the wave tank adopted in <ref name = "Musumeci2015b"/>]]
 
[[Image:UC FERR 05.png|thumb|center|650px|'''<xr id="fig:tank01" />''': Plan of the wave tank adopted in <ref name = "Musumeci2015b"/>]]
 
</figure>
 
</figure>
 
 
  
 
<ref name = "Musumeci2018"/> extend the analysis by both increasing of the number of the tested flow conditions and studying the effects of the possible disturbances of the impact of moving sediment on the ferrofluid sensor. The goals of this study are (i) a quantitative assessment of the effect of the external controlling magnetic field and of the gain of the conditioning circuit on the calibration curves and on the error estimate is performed; (ii) a comparison of the performance of the system between steady current and wave conditions is carried out; and (iii) the effects of the impact of the sediments on the ferrofluid sensor are investigated in weak mobile bed conditions.
 
<ref name = "Musumeci2018"/> extend the analysis by both increasing of the number of the tested flow conditions and studying the effects of the possible disturbances of the impact of moving sediment on the ferrofluid sensor. The goals of this study are (i) a quantitative assessment of the effect of the external controlling magnetic field and of the gain of the conditioning circuit on the calibration curves and on the error estimate is performed; (ii) a comparison of the performance of the system between steady current and wave conditions is carried out; and (iii) the effects of the impact of the sediments on the ferrofluid sensor are investigated in weak mobile bed conditions.
 
The steady current tests were executed in a small scale flume which is 3.60 m long, 0.15 m wide and 0.36 m high (see <xr id="fig:smallscaleflume01" />), the regular wave tests were executed in canal which is 18 m long, 3.6 wide and 1.0 high. During the experimental campaign, 12 steady current conditions and 83 tests under regular wave tests were carried out. The tests were performed changing the magnet type and the number of magnets.  
 
The steady current tests were executed in a small scale flume which is 3.60 m long, 0.15 m wide and 0.36 m high (see <xr id="fig:smallscaleflume01" />), the regular wave tests were executed in canal which is 18 m long, 3.6 wide and 1.0 high. During the experimental campaign, 12 steady current conditions and 83 tests under regular wave tests were carried out. The tests were performed changing the magnet type and the number of magnets.  
 
  
 
The results of the experimental campaign can be resumed as follows:
 
The results of the experimental campaign can be resumed as follows:

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