STAR-CCM+ has a range of options for the simulation of both single and multi-component liquids and gasses. These include a number of different equations of state including both ideal and real gases as well as user defined and polynomial density relationships. For non-Newtonian flows, STAR-CCM+ allows the user to choose from standard models such as the power law, Cross model or Carreau-Yasuda. An extensive materials database is available with standard material properties as well as the ability for users to create and edit their own.
A key requirement in the accurate simulation of fluid flow is the choice of the correct approach to modeling turbulence. To this end, STAR-CCM+ provides a range of state of the art models. RANS models include; Spalart-Allmaras, a range of K-Epsilon models, both standard and SST variants of the K-Omega model as well as two Reynolds stress models. Where laminar-turbulent transition occurs, STAR-CCM+ has the option to use the Gamma-Re-Theta model to model its onset.
When more accurate capture of turbulent flow structures is required such as in the study of aeroacoustics, STAR-CCM+ has a number of options for both LES and DES modeling. For LES, the Smagorinsky, dynamic Smagorinsky and WALE subgrid models are available. For DES, the latest delayed and improved delayed detached eddy simulation models are available for both Spalart-Allmaras and K-Omega SST variants. Finally, the synthetic eddy method for the specification of realistic inflow boundary conditions is available for both LES and DES.