Experimental validation and critical analysis of inverse method in mass transfer using electrochemical sensor

Spatial Resolution Correction for Electrochemical Wall-shear Stress Measurements using Rectangular Sensors

“…Considering the first point, Mao and Hanratty (1992) have developed a technique for the inverse problem, based on a numerical solution of the mass balance equation. More recently, the inverse method has been used by Rehimi et al (2006) and also validated on transient flow (Zidouh et al 2009;Berrich et al 2011;Berrich et al 2013a;Berrich et al 2013b). The inverse method was applied in the present study for the determination of the "true" wall-shear stress fluctuations of the turbulent flow for different Kármán numbers (Re τ = u τ .h/2 ν , where u τ is the friction velocity).…”

“…Then Mao and Hanratty (1992) and Patankar (1980) used it to solve mass transfer problems. This method was well developed by Berrich (Berrich et al 2011;Berrich et al 2013a;Berrich et al 2013b) for known simulated solutions of the convection-diffusion equation, and consists in the iterative determination of the wall velocity shear stress from the measured mass transfer. The flow sheet of this method is presented in Fig.…”

Evaluation of mass transfer in a novel hollow fiber module design using an electrochemical technique

“…To overcome these limitations, the electrochemical method can be applied to estimate KL or the shear stress close to the surface independent of the dimension and configuration (Barthès et al, 2015, Berrich et al, 2013, Borges, 1993, Fulton et al, 2011, Futselaar, 1993, Gaucher et al, 2002, Keirsbulck et al, 2012, Li et al, 2004, Sakakibara et al, 1994, Böhm et al, 2013, Böhm et al, 2014, Jankhah and Bérubé, 2013, Káňavová et al, 2015, Wilk, 2014. The electrochemical method is based on the monitoring of an electrochemical reaction that occurs when the limiting step is the diffusion of ions in the direction of the electrode.…”