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3Dimentional Numerical Modeling of Air Particle Flow in a Cleanroom

Molaei Manesh, Gholam Reza | 2009

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 39708 (08)
  4. University: Sharif University of Technology
  5. Department: Mechanical Engineering
  6. Advisor(s): Saeedi, Mohammad Hassan
  7. Abstract:
  8. Nowadays, cleanrooms have a growing application in a broad range of industries, e.g. pharmacy, aerospace, nuclear energy and electronics. So, it seems that numerical modeling of airflow in such spaces becomes more essential. As computational fluid dynamics has become a powerful tool for indoor airflow studies, in this research, influence of effective parameters on the flow and concentration distribution in cleanrooms has been investigated by the use of CFD. To do so, aerosol flow in a 3-D cleanroom has been numerically modeled by Fluent 6.3, using Euler-Euler approach and standard k- turbulence model. Comparison between numerical results and experimental data shows a considerably good agreement which approve the capability of the modeling methods. By the way of this modeling, the role of inlet-outlet position, obstacle existance, location and motion of pollutant source has been investigated. The results show that the more distance between inlet and outlet vent and the more small obstacles in the room, the more efficient cleanroom we’ll have. In the cases that a pollutant source exists in the cleanroom, the more it is close to the main path of air, the higher efficiency we’ll have. Also the more its motion intersect the streamlines which reach the outlet vent, the more efficient cleanroom we’ll have.

  9. Keywords:
  10. Clean Room ; K-Epsilon Turbulence Model ; Obstruction ; inlet-Outlet Position ; Pollutant Source Location ; Pollutant Source Motion

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