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A Non-oscillatory Forward in Time Formulation for Incompressible Fluid Flows

A Non-oscillatory Forward in Time Formulation for Incompressible Fluid Flows. Joanna Szmelter, Pradeep K Manickam. NFT Framework. For the generic equation . The NFT framework is written as. Explicit. Implicit. (non-symmetric Krylov subspace elliptic solver).

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A Non-oscillatory Forward in Time Formulation for Incompressible Fluid Flows

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  1. A Non-oscillatory Forward in Time Formulation for Incompressible Fluid Flows Joanna Szmelter, Pradeep K Manickam

  2. NFT Framework For the generic equation The NFT framework is written as Explicit Implicit (non-symmetric Krylov subspace elliptic solver) (P.K.Smolarkiewicz et.al., Monthly weather review,1993)

  3. Governing Equations Continuity equation Momentum equation

  4. Flow over a cylinder Slip boundary Outlet Inlet Slip boundary No slip boundary

  5. Computational mesh Triangular Hybrid

  6. Velocity contours Reynolds number 20 Reynolds number 40

  7. Pressure coefficient Reynolds number 20 Reynolds number 40

  8. Periodic vortex shedding at Reynolds number 100

  9. Drag and lift coefficients Reynolds number 100 Reynolds number 200 Reynolds number 300

  10. Drag Coefficient

  11. Strouhal number

  12. Summary The NFT MPDATA edge based solver shows good agreement for the initial computations. The next stage includes further validation for turbulent flows.

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