Mixing and mean age in multiphase systems.

Russ, David C.

doi:10.18297/etd/2467

Cited by 1 publication

(1 citation statement)

References 15 publications

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“…After some transformations, the convection-diffusion equation transferred to a steady-state transport equation with a source term of value 1, and the interested reader is referred to the literature. 16,31 The source term was implemented and the mean age field was obtained to determine the batch-wise mixing time, which was discussed in the next section. The steady flow field was applied to unsteady state simulations as initial conditions.…”

Section: Torque Measurementsmentioning

confidence: 99%

Multi‐impeller mixing performance prediction in stirred tanks using mean age theory approach

Wu,

Jurtz,

Hohl

et al. 2023

AIChE Journal

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The mixing performance and power consumption for four dual‐impeller configurations in a stirred tank are studied using the mean age theory (MAT) approach, the fully transient techniques (FTT), and experiments. A novel method is developed based on the scaled mean age probability distribution curve, allowing the MAT method to be applied to multi‐impeller systems for the first time. The MAT approach provides three‐dimensional tracer distribution within the vessel, which is confirmed by FTT and experiments. Compared to the experimental data, the predicted mixing time from the MAT approach shows a deviation within 20%. This is a good degree of accuracy compared to FTT and correlations. For steady‐state predicted power numbers, a 20% deviation from the experimental data is observed, while the transient approach exhibits a lower deviation at 10%. However, the computational time can be reduced significantly using the steady‐state MAT approach.

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Section: Torque Measurementsmentioning

confidence: 99%