Compressible Flow | CD-adapco
Proper, robust & accurate numerical formulation for high-speed compressible flows
Compressible flow modeling is mostly used to examine the effects of shocks through a fluid, such as external flows around an aircraft or rocket, nozzle or other high speed flows, and airfoil flow.
  • High angle of attack re-entry simulation of the NASA X-34 with adaptive meshing for off-body shock capture: STAR-CCM+ offers a comprehensive range of efficient solvers for flow regimes from low speed up to hypersonic (whilst the fluid remains a continuum). Image courtesy of TLG Aerospace.
  • Simulation of Space Shuttle re-entry.
  • A wide range of flow regimes can be simulated using STAR-CCM+, including inviscid, laminar, turbulent (RANS, LES, DES), transition modeling. incompressible through to hypersonic. Visualized here are the Mach contours on a Scud missile.

STAR-CCM+ is able to make use of two flow regimes: coupled flow and segregated flow. CD-adapco recommends the coupled flow model for compressible flows, which includes the optional AUSM+ invisic flux scheme.

The coupled flow model solves the conservation equations for mass and momentum simultaneously using a time-marching approach. It can use either the implicit or explicit pseudo-time integration.

The segregated flow model can be used for mildly compressible flow, which is a faster approximation for the solution. This model solves the flow equations individually.

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