Application-Specific Tools

Simcenter STAR-CCM+ includes tools for specific industry applications. These tools shorten the time required for creating and analysing typical cases that those industries require.

Simcenter STAR-CCM+ In-cylinder

Simcenter STAR-CCM+ In-cylinder provides a dedicated interface within Simcenter STAR-CCM+ for simulating internal combustion engines (ICE) using transient moving-mesh methods. Simcenter STAR-CCM+ In-cylinder capabilities include fuel injection, the fuel/air mixing process, and combustion using ECFM-3Z with spark-ignition.

Geometry
Import engine CAD and map to recognized parts: full or half-engine (with symmetry)
Physics
Simcenter STAR-CCM+ In-cylinder uses a subset of physics models that are relevant for ICE cases:
  • Time: transient calculations
  • Time-step: constant, stepped table, or automatic
  • Solution domain: single-domain (gas)
  • Material: multi-component specification of air, vapor fuel, and liquid fuel
  • Heat transfer modes: conduction and convection (forced and buoyancy driven)
  • GruMo-UniMORE heat transfer model
  • UNIFAC multi-component evaporation model
  • Flow regime: turbulent (Realizable K-Epsilon Two-Layer All Y+)
  • Equation of state: ideal gas
  • Lagrangian: KHRT or Reitz-Diwakar breakup; Huh atomization
  • Liquid film model
  • Combustion: ECFM-3Z or ECFM-CLEH, with ISSIM Spark Ignition, FI Spark Ignition, Subgrid Spark Ignition, ECFM Standard Auto-Ignition, or ECFM TKI Auto-Ignition.
  • ECFM table generators
Conditions
  • Geometry: full or half-engine (with symmetry); axisymmetric sectors
  • Initialization: import tabular pressure and temperature data
  • Flow boundaries: pressure outlets using tabular pressure and temperature data
  • Wall boundaries: thermal and wall surface specification
Motion
  • Cylinder motion: calculates piston position from engine geometry and operating conditions
  • Valves motion: import valve lift curves
Mesh
  • Volume mesh: trimmed cell mesher (predominantly hexahedral cells)
  • Prism layers: prismatic cells on walls for boundary flow accuracy
  • Cell size: based on best practices
  • Automatic creation of mesh refinement zones for chamfer, valves, and piston crevice
  • Facility for manual creation of mesh refinement zones
  • Mesh reuse in multi-cycle simulations
Solver
  • Segregated solver for flow and energy
  • SIMPLE and PISO algorithms for pressure-velocity coupling
  • Solver under-relaxation
  • Live monitoring of solution data
Fuel Spray Modeling
  • Lagrangian Multiphase with two-way coupling
  • Single or multiple nozzle injectors with solid or hollow spray cones
  • Define fuel mass flowrates, temperatures, droplet diameter distribution, and density
  • Vapor diffusion limited droplet evaporation
  • Bai-Gosman wall impingement
  • Reitz-Diwakar secondary breakup
Results
  • Visualization of geometry, mesh, and solution data
  • Access to solution data through plane sections that are positioned and oriented based on the engine geometry
  • Plots for characteristics of the in-cylinder flow, such as swirl, x-tumble, and y-tumble

Electronics Cooling

The Electronics Cooling Toolset provides a dedicated interface within Simcenter STAR-CCM+ for thermal management simulation of electronics devices.

Geometry
  • Geometry generation that is based on simple shape templates
  • Import of IDF (Intermediate Data Format) files and of ODB++ (Open Database) files
  • Import of CAD models from other CAD packages
  • Transfer of CAD data from the Simcenter STAR-CCM+ CAD modeler
Physics
  • Time: Steady-state calculations
  • Solution domains: multi-domain (fluid and solid)
  • Heat transfer modes: conduction, convection (forced and buoyancy driven), and radiation (wavelength independent Surface-to-Surface (S2S) radiative heat transfer)
  • Flow regime: laminar or turbulent (Realizable K-Epsilon Two-Layer All Y+)
  • Equation of state: constant density or ideal gas
Conditions
  • Convection: ambient boundary conditions
  • Thermal specification: specification of material or specification of layers (PCB)
  • Compact thermal models: resistor networks for chips
  • Heat dissipation: volumetric heat sources
Mesh
  • Volume Mesh: Trimmed cell mesher generates predominantly hexahedral cells
  • Prism Layers: prismatic cells on walls for boundary flow accuracy
  • Cell size: automatic calculation of target and minimum cell size that is based on overall model size
  • Mesh Refinement: integrated features for mesh refinement to detect and capture complex geometries
  • Local mesh controls: cell size customization on surfaces and within volumetric zones
Solver
  • Segregated solver for flow and energy
  • Solver under-relaxation
  • Live monitoring of solution data
Results
  • Visualization of geometry, scalar, and vector quantities
  • Access to solution data through streamlines, isosurfaces, and plane sections
  • Residuals and XY plots
  • Summary reports