Turbulent forced convection in porous media: A direct numerical simulation study

Publikationstyp
Conference Paper
Date Issued
2018
Sprache
English
Author(s)
Gasow, Stefan  
Kuznetsov, Andrey V.  
Schlüter, Michael  
Jin, Yan 
Institut
Mehrphasenströmungen V-5  
TORE-URI
http://hdl.handle.net/11420/2960
Start Page
2775
End Page
2782
Citation
International Heat Transfer Conference (2018-August): 2775-2782 (2018-01-01)
Contribution to Conference
16th International Heat Transfer Conference, IHTC 2018  
Publisher DOI
10.1615/IHTC16.cov.022301
Scopus ID
2-s2.0-85068319326
Forced convection in porous media has many important applications, one of which is in thermal energy storage systems that use low cost materials, such as stones or brick, as heat storage materials. Turbulence is welcomed in such thermal energy storage systems since it efficiently enhances heat transfer. Forced convection in porous media can be described by the macroscopic momentum and energy equations. In order to close the macroscopic equations, we analyzed the microscopic flow and temperature fields in porous media by direct numerical simulation (DNS) methods. Two DNS methods were adopted in our study to compare and verify the results. They are a finite volume method (FVM) and a Lattice-Boltzmann method (LBM). The porous matrix is made of a large number of periodically arranged 3-dimensional spheres. Based on our DNS results, we proposed a macroscopic model for calculating forced convection in porous media.