Research in DSMC
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Research in DSMC. Development of a general-purpose 2D/2D-axisymmetric/3D [ P arallelized D irect S imulation Monte Carlo C ode ( PDSC )] Solving the Boltzmann equation using particle-based Monte Carlo method < 5 sets in the world (DAC & MONACO in USA; SMILE in Russia)

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Research in DSMC

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Research in dsmc

Research in DSMC

  • Development of a general-purpose 2D/2D-axisymmetric/3D [Parallelized Direct Simulation Monte Carlo Code (PDSC)]

    • Solving the Boltzmann equation using particle-based Monte Carlo method

    • < 5 sets in the world (DAC & MONACO in USA; SMILE in Russia)

    • Unstructured grid topology that is flexible in treating complex geometry.

    • Dynamic domain decomposition & variable time step scheme that greatly increases the computational speed.

    • Parallelized adaptive mesh refinement that improves solution accuracy where it needs.

    • Developing extended conservative weighting scheme in efficiently treating flow problems involving trace species.

    • Development of pressure-boundary treatment method for internal flow problems.

    • Deriving VSS collision parameters using quantum chemistry calculation.

    • Developing non-equilibrium high-temperature chemistry module related to air

    • Developinghybrid DSMC-NS scheme

    • Applications include micro gas flow, vacuum technology, plume impingement in space vehicle, hypersonic non-equilibrium aerodynamics, PVD process, etc.


Research in dsmc

Research in DSMC

(cont’d)

Dynamic domain decomposition

(64 processors)

Parallel Adaptive Mesh Refinement

Hypersonic flow past the Apollo

(with chemical reactions)

Hybrid DSMC-NS scheme

(nozzle plume)

Plume impingement on spacecraft

(Formosan-3)

Spiral-grooved pump flow

Sputtering PVD flow

(neutral species)

Under-expanded twin-jet interaction


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