Performance comparison between novel and commercial static mixers under turbulent conditions

Numerical Study of Flow Field and Mixing Performance of a New Curved-Sheet Blade-Folded Static Mixer

“…The peak extensional efficiency is located at the starting position of the second mixing element, where the fluid is significantly stretched due to the 90° rotation with respect to the first mixing element. There is no clear flow pattern observed under the operating conditions, and this conclusion is consistent with the founding of Chakleh Figure c shows the extensional efficiency distribution in the LPD static mixer.…”

“…Extensional efficiency is used to quantify the degree of dispersive mixing in the mixing process. ,− Extensional efficiency γ is defined as follows: γ = false| bold-italicS false| false| bold-italicS false| + false| bold-italicω false| false| bold-italicS false| = 1 2 false[ ∇ true u → + ∇ u → T false] false| bold-italicω false| = 1 2 false[ ∇ true u → − ∇ u → T false] where | S | and | ω | represent the magnitude of the rates of deformation and vorticity tensors, respectively. ∇ true u → represents the velocity gradient.…”

“…Extensional efficiency is used to quantify the degree of dispersive mixing in the mixing process. ,− Extensional efficiency γ is defined as follows: where | S | and | ω | represent the magnitude of the rates of deformation and vorticity tensors, respectively. represents the velocity gradient.…”

“…There is no clear flow pattern observed under the operating conditions, and this conclusion is consistent with the founding of Chakleh. 56 Figure 9c shows the extensional efficiency distribution in the LPD static mixer. Compared with other static mixers, the variation of extensional efficiency in LPD is not significant and the fluctuation is relatively small.…”

Numerical Simulation of the Mixing and Salt Washing Effects of a Static Mixer in an Electric Desalination Process

“…Most of the studies on static mixers have been carried out using Computational Fluid Dynamics (CFD), except for Hammoudi's work, which is experimental (Table 1) [13,14]. However, these studies mainly focus on the influence of static mixers (such as the shape and thickness of the mixing elements [15,16] and the type [17][18][19]) and the properties of the mixed liquid [20][21][22][23] on the oil-water mixing effect, and they only discuss the transmission process without delving into the mass transfer process of salt washing efficiency in the electric desalination process.…”