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

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Presentation transcript:

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

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

Governing Equations Continuity equation Momentum equation

Flow over a cylinder Slip boundary No slip boundary Inlet Outlet

Computational mesh Triangular Hybrid

Velocity contours Reynolds number 20Reynolds number 40

Pressure coefficient Reynolds number 20Reynolds number 40

Periodic vortex shedding at Reynolds number 100

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

Drag Coefficient

Strouhal number

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