Flow Interaction Between Porous and Non-porous region in a Channel Partially Filled with a Porous Block: Pore-scale LES Study

Mohammad Jadidi, Yasser Mahmoudi Larimi

Research output: Contribution to conferencePaperpeer-review

32 Downloads (Pure)

Abstract

The present study investigates fluid flow interaction between porous and non-porous regions in a channel partially filled with a porous block. For this purpose, a detailed pore-scale large eddy simulation is utilized. Flow visualization shows that some portion of the fluid entering the porous blocks is pushed upwards to the porous-fluid interface and leaves the porous region; this phenomenon is called flow leakage. Spectral analysis of vertical velocity and correlation coefficients confirm the flow leakage. Below the porous interface, the magnitude of correlation coefficients exposes a strong positive correlation between vertical velocity fluctuations that reveals the upward tendency of flow in the porous region. This trend is also observed across the porous interface which confirms momentum transfer through the porous interface. Moreover, spectral analysis of vertical velocity reveals that the dominant frequencies within the porous region exist in the non-porous region where the flow leakage is pronounced. This observation shows strong momentum transfer between the porous and non-porous regions due to the flow leakage.
Original languageEnglish
Publication statusPublished - 17 Jan 2021
EventProceedings of the 7th World Congress on Momentum, Heat and Mass Transfer (MHMT'22) - Portugal, Lisbon
Duration: 7 Apr 20229 Apr 2022
https://mhmtcongress.com

Conference

ConferenceProceedings of the 7th World Congress on Momentum, Heat and Mass Transfer (MHMT'22)
CityLisbon
Period7/04/229/04/22
Internet address

Keywords

  • Porous flow
  • Flow leakage
  • Large eddy simulation
  • spectral analysis
  • correlation coefficient

Fingerprint

Dive into the research topics of 'Flow Interaction Between Porous and Non-porous region in a Channel Partially Filled with a Porous Block: Pore-scale LES Study'. Together they form a unique fingerprint.

Cite this