New Framework for Upscaling Gas-Solid Heat Transfer in Dense Packing - Archive ouverte HAL Access content directly
Journal Articles International Journal of Heat and Mass Transfer Year : 2022

New Framework for Upscaling Gas-Solid Heat Transfer in Dense Packing

(1) , (1)
1
Emeline Noël
  • Function : Author
  • PersonId : 1141344

Abstract

The objective of this work is to provide a suitable upscaling framework for modeling gas-solid heat transfer in dense packings. In a macroscopic two-temperature model, the pore-scale heat transfer is modeled by determining a Nusselt number. We introduce a new surface statistical filter to extract the Nusselt number from pore-scale simulations. A thermal offset boundary condition is developed to deal with dense packings that exhibit high heat transfer. The new method is applied to sphere packings. Several pore-scale simulations over a range of Reynolds number (10–100) and solid volume fraction (0.1–0.6) are performed. The extracted Nusselt numbers show very good agreement with results available in the literature for lower solid volume fractions (0.1–0.5). We show that the Nusselt number to be used with the two-temperature model is the Nusselt number extracted using macroscopic (filtered) temperature. We propose a valid Nusselt number correlation for a dense packing of spheres. Nevertheless, the proposed scaling framework is not restricted to sphere packings.
Embargoed file
Embargoed file
1 1 10
Year Month Jours
Avant la publication

Dates and versions

hal-03619437 , version 1 (25-03-2022)

Identifiers

Cite

Emeline Noël, David Teixeira. New Framework for Upscaling Gas-Solid Heat Transfer in Dense Packing. International Journal of Heat and Mass Transfer, 2022, 189, pp.122745. ⟨10.1016/j.ijheatmasstransfer.2022.122745⟩. ⟨hal-03619437⟩

Collections

IFP
23 View
18 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More