Simulations of flow through fluid/porous layers by a characteristic-based method on unstructured grids

Baili Zhang, Yong Zhao

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

An upwind characteristic-based finite volume method on unstructured grids is employed for numerical simulation of incompressible laminar flow and forced convection heat transfer in 2D channels containing simultaneously fluid layers and fluid-saturated porous layers. Hydrodynamic and heat transfer results are reported for two configurations: the first one is a backward-facing step channel with a porous block inserted behind the step, and the second one is a partially porous channel with discrete heat sources on the bottom wall. The effects of Darcy numbers on heat transfer augmentation and pressure loss were investigated for low Reynolds laminar flows. The results demonstrate the accuracy and robustness of the numerical scheme proposed, and suggest that partially porous insertion in a channel can significantly improve heat transfer performance with affordable pressure loss.

Original languageEnglish
Pages (from-to)2443-2457
Number of pages15
JournalInternational Journal for Numerical Methods in Engineering
Volume50
Issue number11
DOIs
Publication statusPublished - Apr 20 2001

Keywords

  • Characteristic-based method
  • Heat transfer
  • High-order scheme
  • Incompressible flow
  • Porous media
  • Unstructured grids

ASJC Scopus subject areas

  • Numerical Analysis
  • Engineering(all)
  • Applied Mathematics

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