Numerical simulation on forced convection heat transfer performance and pressure drop of high permeability porous media

Shigeki Hirasawa, Tsuyoshi Kawanami, Katsuaki Shirai

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We studied the forced convection heat transfer performance and pressure drop of high permeability metal cellular porous media in air flow using a 3-dimensional thermofluid computation code. The temperature and velocity distributions in the air flow region, local heat transfer coefficient, and local heat flux on the surface of the porous media were numerically calculated for steady air flow by changing the parameters of the pore size and air velocity. The cellular porous media were modeled by pin array, cube geometry, and truncated octahedron geometry using thin wires. The diameter of the wires was 0.1 mm, and the pore per inch (PPI) was 5-50. The relations between the Nusselt number using the volumetric heat transfer coefficient and the Reynolds number were obtained from our calculation results, and we compared them with conventionally proposed experimental correlations. Also, the pressure drop calculation result was compared with conventionally proposed experimental correlations. The following results were obtained. The local heat transfer coefficient and local heat flux on the surface of porous media were small near the joint positions of the wires of the cellular porous media because of the thermal boundary layer. The volumetric heat transfer coefficient and pressure drop agreed with conventionally proposed experimental correlations within errors of twice the volumetric heat transfer coefficient and pressure drop. The relation between the heat transfer rate per unit volume and the heat transfer area per unit volume agreed with the convection heat transfer correlation for a tube bundle.

Original languageEnglish
Title of host publicationHeat Transfer and Thermal Engineering
PublisherAmerican Society of Mechanical Engineers (ASME)
Volume8
ISBN (Electronic)9780791850626
DOIs
Publication statusPublished - 2016 Jan 1
Externally publishedYes
EventASME 2016 International Mechanical Engineering Congress and Exposition, IMECE 2016 - Phoenix, United States
Duration: 2016 Nov 112016 Nov 17

Other

OtherASME 2016 International Mechanical Engineering Congress and Exposition, IMECE 2016
CountryUnited States
CityPhoenix
Period16/11/1116/11/17

Keywords

  • Cellular porous media
  • Fin
  • Forced convection heat transfer
  • Numerical simulation
  • Pressure drop

ASJC Scopus subject areas

  • Mechanical Engineering

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  • Cite this

    Hirasawa, S., Kawanami, T., & Shirai, K. (2016). Numerical simulation on forced convection heat transfer performance and pressure drop of high permeability porous media. In Heat Transfer and Thermal Engineering (Vol. 8). American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/IMECE201665321