Mixing Study in an Unbaffled Stirred Precipitator Using LES Modelling

Figure 13

Energy spectrum of the vertical velocity fluctuations in the forced vortex (𝑧^∗=0.11 and 𝑟^∗=0.18). Violet line: experiments (measured at 0, 90, 180, and 270° at the same 𝑧^∗ and 𝑟^∗); orange lines: LES computations (measured at 0, 45, 90,…, 315°) at the same 𝑧^∗ and 𝑟^∗). The black straight line is a 𝑘^−5/3 slope.