On the thermal entrance length of moderately dense gas-particle flows

Beetham, Sarah; Lattanzi, Aaron M.; Capecelatro, Jesse

doi:10.1016/j.ijheatmasstransfer.2021.121985

Cited by 6 publications

(1 citation statement)

References 37 publications

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“…Hence, the implementation of their models requires time‐consuming implicit iterative algorithms at each grid. In the work of Beetham et al, 32 the nondimensional temperature for the fluid and particle phase is given by ( T f/p − T p,0 )/( T f,0 − T p,0 ). That is, the normalizing factor is the initial temperature difference between phases.…”

Section: Introductionmentioning

confidence: 99%

Modeling filtered heat transfer model by considering dimensionless temperature difference between gas and solid phases

Han

et al. 2022

AIChE Journal

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Computational fluid dynamics–discrete element method is used to simulate gas–solid flows with heat transfer. The strategy of repetitively resetting the gas phase temperature is adopted to maintain the temperature difference between the gas and solid phases. The difference between the heat transfer characteristics produced by this strategy and the traditional heat source method is analyzed. It is found that heat transfer in dense regions is artificially enhanced by the heat source method. Therefore, the results obtained by the temperature reset method are filtered to develop a three‐marker model for the filtered interphase heat transfer coefficient (IHTC). In the developed model, the filtered gas–solid temperature difference is nondimensionalized by the average gas–solid temperature difference in surrounding grids, which is shown to have an impact on the filtered IHTC. The developed model is demonstrated to be effective and accurate in both a prior and a posterior tests.

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Section: Introductionmentioning

confidence: 99%

Modeling filtered heat transfer model by considering dimensionless temperature difference between gas and solid phases

Han

et al. 2022

AIChE Journal

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Continuum modeling of gas–particle flows: an overview

Schneiderbauer

2024

Acta Mech

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In this review paper, we provide a brief overview of the recent advances in the continuum modeling of gas–particle flows. First, we focus on the kinetic theory-based two-fluid models, which have become a valuable tool to investigate small-scale moderately dense turbulent gas–particle flows. Second, the continuum description is quite restrictive with respect to the maximum grid spacing, and large-scale simulations usually employ coarse mesh resolutions to keep the analyses practicable. Such coarse-graining inevitably neglects the small unresolved scales, which requires additional modeling. Here, filtered two-fluid models have been applied successfully to a variety gas–solid flow problems. Finally, we give a condensed outline about future research challenges for the continuum modeling of gas–particle flows.

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A multiscale interphase heat transfer model for fluidized beds based on the steady-state EMMS approach

Zhang,

Tian,

et al. 2024

Chemical Engineering Science

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On the thermal entrance length of moderately dense gas-particle flows

Cited by 6 publications

References 37 publications

Modeling filtered heat transfer model by considering dimensionless temperature difference between gas and solid phases

Modeling filtered heat transfer model by considering dimensionless temperature difference between gas and solid phases

Continuum modeling of gas–particle flows: an overview

A multiscale interphase heat transfer model for fluidized beds based on the steady-state EMMS approach

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