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Computational fluid dynamics (CFD)
  • Computational fluid dynamics (CFD) is one of the branches of fluid mechanics that uses numerical methods and algorithms to solve and analyze problems that involve fluid flows.
  • Turbulence models
    • Turbulent flow produces fluid interaction at a large range of length scales. This problem means that it is required that for a turbulent flow regime calculations must attempt to take this into account by modifying the Navier-Stokes equations. Failure to do so may result in an unsteady simulation. When solving the turbulence model there exists a trade-off between accuracy and speed of computation.
  • Reynolds-averaged Navier-Stokes
  • Reynolds-averaged Navier-Stokes (RANS)equations are the oldest approach to turbulence modeling. An ensemble version of the governing equations is solved, which introduces new apparent stresses known as Reynolds stresses. RANS models can be divided into two broad approaches: Boussinesq hypothesis Reynolds stress mode1 (RSM)
  • Laminar single-phase flow simulations
  • Flow against abackward-facing step with buoyancy forces.
  • Lid-driven flow in a rectangular cavity.
  • Natural convection in a rectangular cavity.
  • Concurrent lid- and buoyancy-driven flow in a rectangular cavity.
  • Isothermal flow against a sudden expansion.
  • Development of thermal and hydrodynamic pipe flow entry region.
  • Viscoelastic fluid flow in a tube.
  • Flow through an orifice.
  • Simulation of a tubular reactor.
  • Flow around a rectangular body placed in a free stream.
  • Simulation of a silicon nanoparticle deposition chamber for nonvolatile memory devices.
  • Diffusion and flow through a microfluidic device.
  • Turbulent one-phase flow simulations
  • Problem 1: Flow through an abrupt circular tube expansion.
  • Turbulent diffusion within a canyon.
  • Laminar two-phase flow simulations
  • Simulation of a T-By plate design for distillation columns.
  • Simulation of two-phase batch sedimentation.
  • Simulation of two phase batch sedimentation in tanks with internal obstructions.
  • Simulation of flow in an airlift pump.

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