Heat Transfer in Uniform Suction Porous Media of Micro Channel with Variable Cross-section

Akrami, Hamid Reza | 2015

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  1. Type of Document: M.Sc. Thesis
  2. Language: English
  3. Document No: 47110 (58)
  4. University: Sharif University of Technology, International Campus, Kish Island
  5. Department: Science and Engineering
  6. Advisor(s): Nouri Borujerdi, Ali; Kazemzadeh Hannani, Siamak
  7. Abstract:
  8. Fully developed fluid flow and heat transfer is numerically investigated in micro-channels. There are many techniques to intensify heat transfer for internal flows, such as: increasing Reynolds number, extending surface area of channel wall and also disrupting the boundary layer thickness on the wall. Among these, extension wall surface area is a common technique. There are several ways to extend surface area including finned, slotted, chemically etched, grooved as well as porous media adhered wall surface. One other method that we work on it is modifying wall cross-section and usage of uniform suction porous media. The governing equations include the momentum equation of the core region that is be linked to corresponding equation of the porous region. Under the non-equilibrium condition, the energy equations include the core region and two energy equations of solid and fluid in porous region. The heat transfer coupling conditions links these equations. Discretization of the governing equations is performed by a finite difference scheme and the SIMPLE algorithm will solve the set of discretized algebraic equations. By solving the numerical rectangular micro channel in various cases and conditions in this study, the enhancing of heat transferring specially by adding the suction on the wall is observed. Furthermore, comparison of diversity conditions of micro channel is the main role of this research
  9. Keywords:
  10. Heat Transfer ; Microchannel ; Cross Section Variable ; Numerical Solution ; Porous Media

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