Large-eddy simulation of enhanced mixing with buoyant plumes

Chen, Boyang; Fraga, Bruño; Hemida, Hassan

doi:10.1016/j.cherd.2021.11.009

Cited by 8 publications

(1 citation statement)

References 62 publications

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“…However, as the distortion of bubble shapes becomes more pronounced with increasing mass and heat flux, representing bubbles as spheres can lead to significant errors. Recently, the EL model has been primarily applied in conjunction with the Large Eddy Simulation (LES) model to simulate turbulent bubble columns , or biochemical reactors with bubble injection from the bottom. These simulations have considered the species transport and mass transfer induced by reactions, , bubble breakage/coalescence, bubble growth/collapse, bubble deformation, and bubble-induced turbulence .…”

Section: Introductionmentioning

confidence: 99%

Analysis of Spatial Nonuniform Behaviors of Subcooled Flow Boiling Employing Euler–Lagrange Approach

Li,

Zhang

et al. 2024

Ind. Eng. Chem. Res.

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Researching subcooled flow boiling behaviors is critical for achieving efficient heat exchange in engineering processes involving heat generation. This study endeavors to apply a wall boiling model within the Euler−Lagrange framework to evaluate the nonuniform dynamics of subcooled flow boiling in the vertically oriented channels. The simulated dynamics are observed to well reproduce the experimentally captured data. The computed results revealed that boiling can facilitate maintaining a uniform wall temperature distribution and mitigate wall temperature rising owing to the reduced convective heat flux components, which are linked to an increase in bubble influence area radio. The heating wall can be divided into two or three regions under varying wall heat fluxes. The improved heat exchange performance in each region is related to the enhanced fluid turbulence and/or bubble influence area. Additionally, the linear enlargement of bubble size along the channel is prompted by a shift toward larger bubbles and a decrease in small ones. This work may offer meaningful simulation strategies and novel perspectives for subcooled flow boiling.

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