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Simulation and Analysis of a Reactive Flow in a Porous Media, Using LBM and GPU

Sheida, Mojtaba | 2017

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  1. Type of Document: Ph.D. Dissertation
  2. Language: Farsi
  3. Document No: 50850 (45)
  4. University: Sharif University of Technology
  5. Department: Aerospace Engineering
  6. Advisor(s): Taeibi Rahni, Mohammad; Esfahanian, Vahid
  7. Abstract:
  8. In this research, surface reaction phenomenon in porous media has been numerically simulated in pore scale. The main interesting part in this kind of physics is surface reaction exposed to a flow field. In this regard, an in-house code, based on LBM was developed. To speed-up our simulation, parallel computing was used on a GPU platform leading to a significant speed-up. Also, to model a real complex geometry, X-CT and MRI medical imaging technique were used to accurately model several complex 3D geometries. While, image processing technique was used to model our 2D geometries. The basic equilibrium equation of isopropanol dehydrogenation was considered to simulate and to analize chemical surface reaction in a packed bed. The porosity effect of particles in porous media was considered and then the effects of specific area and elements arrangement were studied. The results show that in packed beds, formed by porous particles, the amount of effective reactive surface was affected by inflow momentum. In addition, the results show that the amount of specific area has direct role in the amount of surface reaction. Finally, even though no particular effect on reactant conversion ratio was considered, due to elements arrangement, more uniform flow pattern was observed in large to small arrangements
  9. Keywords:
  10. Lattice Boltzmann Method ; Porous Media ; Surface Reactions ; Mass Transfer ; Image Processing ; Parallel Processing ; Graphic Processing

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