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Mixing

Experimental and Numerical Investigation of Mixing Enhancement in Free Turbulent Flows Presentation by Subba Rao V. Mandava Supervisors Prof. Francesc Giralt Prof. Joan Herrero. Mixing . Mixing is important in many practical engineering situations

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Mixing

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  1. Experimental and Numerical Investigation of Mixing Enhancement in Free Turbulent FlowsPresentation by Subba Rao V. MandavaSupervisorsProf. Francesc Giralt Prof. Joan Herrero

  2. Mixing • Mixing is important in many practical engineering situations • Dispersion of contaminents of combustion • Flows tend to be complex • Turbulence models used to predict them break down

  3. ..related to wake flows • 3-D turbulence structures and their related transfer processes in a plane turbulent wake • Entrainment and transfer of momentum, heat and mass occur in free flows depend on structure of the internal vertical motions • Interact with external irrotational flow field

  4. Wake

  5. Entrainment

  6. Experiments • Expensive • Time taking • Risky

  7. Computational fluid dynamics (CFD) • Discretize the domain • Discretize the equiations • Solve discretized equations

  8. Discretize the domain

  9. Discretize the domain

  10. Discretize the domain

  11. Discretize the domain

  12. Discretize the domain

  13. Discretize the domain

  14. Computational fluid dynamics (CFD) • Discretize the domain • Discretize the equations • Solve discretized equations

  15. } Discretize the equations

  16. B-spline results

  17. Finite cylinders

  18. Finite cylinders

  19. Finite cylinders

  20. Thank you !!

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