“…Typical applications range from the reactor in polymer systems (Fourcade et al, 2001), heat or mass transfer alternative devices (Simões et al, 2008), mixing liquid-liquid systems in the laminar or turbulent flow (Rama Rao et al, 2007) to intensifying gas-liquid mass transfer processes (Al Taweel et al, 2005). Moreover, static mixers have a wide range of applications, such as continuous mixing, chemical reactors or mass and heat transfer processes or a thermal homogenization (Li et al, 1996;Visser et al, 1999;Lemenand et al, 2010). Several theoretical and experimental studies of the pressure drop are presented in (Liu et al, 2006;Engler et al, 2004;Hobbs et al, 1998;Kumar et al, 2008;Li et al, 1997;Joshi et al, 1995).…”