CFD Modeling of Ammonia Release and Water Curtain for Mitigation

Khajehpour, Amir Hossein | 2017

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 51000 (06)
  4. University: Sharif University of Technology
  5. Department: Chemical and Petroleum Engineering
  6. Advisor(s): Rashtchian, Davoud
  7. Abstract:
  8. The release of toxic materials causes tragic accidents every year. There are various techniques in order to mitigate the release effect of these materials such as Application of air jets, steam curtains and water curtains. This study presents numerical calculations to reproduce the continuous ammonia release dispersion with and without the mitigating influence of a downwind water curtain using computational fluid dynamic (CFD) software ANSYS Fluent 15.0. The RNG model coupled with Lagrangian discrete phase model (DPM) was used to simulate the dilution effectiveness of the water curtain system. The ammonia absorption was taken into account by means of user-defined functions (UDF). The simulated results were compared with literature. Finally, tha influence of various parameters such as wind speed and water/gas ratio are on the performance of water sprays are studied
  9. Keywords:
  10. Dispersion ; Ammonia ; Adsorption ; Modeling ; Computational Fluid Dynamics (CFD) ; Discrete Phase Model ; Mitigation ; User Defined Functions ; Toxic Release

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