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Analysis of Heat Transfer and Fluid Flow in Partial Porous Microchannel

Shamsoddini Lori, Mohammad | 2020

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 52874 (08)
  4. University: Sharif University of Technology
  5. Department: Mechanical Engineering
  6. Advisor(s): Nouri Brorujerdi, Ali
  7. Abstract:
  8. In this study, heat transfer and fluid flow inside a rectangular microchannel with partial porous media is simulated numerically. Darcy-Brinkman-Forchheimer equations are used to model the porous media. The effect of height of porous media, permeability (Darcy number), porosity and inlet velocity (Reynolds number) on Hydrodynamic and heat transfer performance are examined. At different values of height of porous media 0.2, 0.4, 0.6, 0.8, and 1 mm the Nusselt number of microchannel are 1.72, 1.78, 1.86, 1.94, and 2.02 compared to the microchannel without porous media. And the porous drop are 1.09, 1.2, 1.49, 1.76, and 2.15 compared to the microchannel without porous media. And FOM are 1.78, 1.93, 2.12, 2.35, and 2.61. For a better insight, effect of the porosity parameters including porosity and permeability (Darcy number) of the porous substrate and inlet velocity (Reynolds number) are investigated. With decrease of porosity and permeability, heat transfer performance improve, hydrodynamic performance diminish and heat transfer and hydrodynamic performance simultaneously (FOM) improve. With decrease of inlet velocity heat transfer performance diminish, hydrodynamic performance improve, and hydrodynamic performance simultaneously (FOM) improve
  9. Keywords:
  10. Microchannel ; Partial Porous Channel ; Laminar Flow ; Heat Transfer ; Hydrodynamic Performance Curve ; Numerical Solution ; Figure-of-Merit (FoM)

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