Numerical simulations were conducted for fully developed, steady-state flow with mass transfer in fiber bundles arranged in regular lattices. The porosity was 0.5 and the Schmidt number 500. Several combinations of axial flow, transverse flow and flow attack angles in the cross-section plane were considered. The axial and transverse Reynolds numbers Rez , ReT were made to vary from 10(^−4) to 10(^2). Concentration boundary conditions, and the definition of an average Sherwood number, were addressed. Results for the hydraulic permeability were compared with the literature. Both hexagonal and square lattices were found to be hydraulically almost isotropic up to transverse flow Reynolds numbers ReT of ~10, while they behaved anisotropically in regard to mass transfer even at ReT as low as 0.1. A larger anisotropy was exhibited by the square lattice. In mixed (axial + transverse) flow, the transverse friction coefficient was almost completely unaffected by the simultaneous presence of axial flow, while the axial friction coefficient (and thus the axial pressure loss) increased with the transverse Reynolds number for ReT > ~5-10. In regard to mass transfer, the Sherwood number settled in all cases to the higher between the Sherwood number in purely transverse flow and that in purely axial flow.

Cancilla N, Gurreri L, Marotta G, Ciofalo M, Cipollina A, Tamburini A, et al. (2021). CFD prediction of shell-side flow and mass transfer in regular fiber arrays. INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 168 [10.1016/j.ijheatmasstransfer.2020.120855].

CFD prediction of shell-side flow and mass transfer in regular fiber arrays

Cancilla N;Gurreri L
;
Ciofalo M;Cipollina A;Tamburini A;Micale G
2021

Abstract

Numerical simulations were conducted for fully developed, steady-state flow with mass transfer in fiber bundles arranged in regular lattices. The porosity was 0.5 and the Schmidt number 500. Several combinations of axial flow, transverse flow and flow attack angles in the cross-section plane were considered. The axial and transverse Reynolds numbers Rez , ReT were made to vary from 10(^−4) to 10(^2). Concentration boundary conditions, and the definition of an average Sherwood number, were addressed. Results for the hydraulic permeability were compared with the literature. Both hexagonal and square lattices were found to be hydraulically almost isotropic up to transverse flow Reynolds numbers ReT of ~10, while they behaved anisotropically in regard to mass transfer even at ReT as low as 0.1. A larger anisotropy was exhibited by the square lattice. In mixed (axial + transverse) flow, the transverse friction coefficient was almost completely unaffected by the simultaneous presence of axial flow, while the axial friction coefficient (and thus the axial pressure loss) increased with the transverse Reynolds number for ReT > ~5-10. In regard to mass transfer, the Sherwood number settled in all cases to the higher between the Sherwood number in purely transverse flow and that in purely axial flow.
Settore ING-IND/26 - Teoria Dello Sviluppo Dei Processi Chimici
Settore ING-IND/19 - Impianti Nucleari
Cancilla N, Gurreri L, Marotta G, Ciofalo M, Cipollina A, Tamburini A, et al. (2021). CFD prediction of shell-side flow and mass transfer in regular fiber arrays. INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER, 168 [10.1016/j.ijheatmasstransfer.2020.120855].
File in questo prodotto:
File Dimensione Formato  
CFD prediction of shell-side flow and mass transfer in regular fiber arrays.pdf

non disponibili

Descrizione: Versione editoriale
Tipologia: Versione Editoriale
Dimensione 4.33 MB
Formato Adobe PDF
4.33 MB Adobe PDF   Visualizza/Apri   Richiedi una copia
Pre-print.pdf

accesso aperto

Descrizione: Self-archived version of the article published in International Journal of Heat and Mass Transfer
Tipologia: Pre-print
Dimensione 1.79 MB
Formato Adobe PDF
1.79 MB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/10447/477335
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 3
  • ???jsp.display-item.citation.isi??? 3
social impact