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Modeling of Fluid Flow and Heat Transfer in a Partially Filled Porous Channel with Wall Suction

Hashemi, Mir Hossein | 2013

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 45009 (08)
  4. University: Sharif University of Technology
  5. Department: Mechanical Engineering
  6. Advisor(s): Nouri-Borujerdi, Ali
  7. Abstract:
  8. This work numerically simulates pressure drop and heat transfer for flow in a pipe with porous wall. Incompressible two dimensional, ax symmetric laminar or turbulence flow with constant mass flow rate is considered. It is assumed that there is no thermal equilibrium in the porous media region between solid and fluid phase. Effect of porous wall thickness and Darcy number on the rate of heat transfer and pressure drop were investigated. The Darcy number varies from to and porous wall thickness can fill entire pipe. the turbulent model is used to calculate the fluid flow and heat transfer characteristics in turbulent flow. Nusselt number can enhance about five times compared with turbulence flow at pipe without porous medium. For a porous tickness to pipe radius radius ratio less than about , the effect of the Darcy number on the pressure drop is not that significant. Main diffusion of fluid from pipe wall occur at short distance from pipe inlet. Mass flow rate from pipe wall increase with porous medial thickness and Darcy number, until for full porous pipe mass flow rate from pipe outlet reaches to zero. Nusselt number decrease to one fifth and approximate thermal entrance length increase to three times with increasing the porous media thickness at the wall. Darcy number has no significant effect on the Nusselt number for the range of parameters investigated
  9. Keywords:
  10. Turbulent Flow ; Numerical Solution ; Partial Porous Channel ; Forced Convection ; Wall Suction

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