CFD

Flow

Permeable baffles for selected species in gas mixtures
- Enable modeling of gas separation processes with permeable membranes by introducing an Impermeable/Permeable species options for baffle interfaces
  - Equivalent to the Conductive/Non-Conductive baffle thermal option
  - Embedded calculation of species mass flux through the baffle interface by defining selective species permeabilities
Porous phase substance replaceable when “in Use” by Reaction Component Manager
- Improved workflow for battery chemistry analyses via on-the-fly replacement of porous phase substance components
  - A Replace with action is now available on right-click for porous phase substances independently of whether it is being used or not in the simulation

Surface radiation property input revision and Surface properties database
- Streamlined process to setup radiation properties via a completely redesigned and fully automatable workflow
  - Assignment of surface properties aligned with the solid properties (at the continuum level)
- New material database section for surface properties supporting Radiation properties in first release
  - Flexible infrastructure to support more surface properties in future releases (i.e., corrosion, friction etc.)
Patch-Face Proportion available as a parameter
- Improved customization of VTM and CHT model templates via Patch-Face proportion value
  - Can be specified as a parameter

User-defined Equation of State (EoS) with Complex Chemistry
- Improve stability when modeling combustion of supercritical fluids with User EoS and Complex Chemistry compatibility
  - EoS properties can be defined using e.g. Tables to account for unique properties around the critical point
  - Extends previous compatibilities with Ideal Gas and Real Gas EoS models
Surface chemistry with time-varying porosity
- Account for consumption of battery material (jellyroll) in thermal runaway with variable solid phase porosity
  - Surface Chemistry model in a porous media can now account for time-varying porosity
  - Allows for reaction rates to be limited by bulk species concentration
  - New field function added - Porous Phase Mass
Acoustic Modal Solver: arbitrary number of n-tau sources
- Capture thermoacoustic impact of several flame fronts in a combustion system with multiple n-tau sources
  - Typical applications include axially staged combustion
Single Precision Flamelet Tables now as default
- Improve speed and memory with reduced table size, without impacting solution accuracy
- The ability to generate single precision Flamelet Tables was introduced in Simcenter STAR-CCM+ 2402
- Now single precision table generation are the default option

Gamma transition model for Spalart-Allmaras ID-0005664
- Extend applicability of Spalart-Allmaras (SA) turbulence model to transitional flows with a new Gamma transition model for Spalart-Allmaras
  - Improve accuracy of Spalart-Allmaras turbulence model for low Reynolds flows (Urban Air Mobility)
  - Compatible with both RANS and DES approaches
  - Similar accuracy as K-Omega with Gamma transition model with up to 10% reduction in turnaround time
Support for turbulence model selection and deselection in Stage
- Fully automate RANS-to-Scale Resolving Simulation (SRS) workflows by added support for turbulence model selection and deselection in Stages
  - All turbulence methods supported (RANS, DES, LES), as well as all RANS and LES sub-grid scale models
- Robust initialization of aerospace supersonics and hypersonics with fully automated Inviscid-to-RANS workflow
  - All viscous regimes supported (Inviscid, Laminar, Turbulent)
- Multiple physics setups in one single simulation
  - Reduced need for multiple continua and Java scripting