Solver uses the input data defined in the Pre-processor to calculate the thermal-fluid flow field. The user only specifies the name and location of the input file. The monitor function enables observation of the calculation status.

High-speed Computing

scSTREAM uses high-speed computing to quickly complete an analysis. High-speed computing also enables scSTREAM to solve large-scale analyses in an acceptable time. This allows use of complicated CAD data with minimum modification and/or clean-up to the original CAD data.

--Computational Speed Examples--

1) Indoor Temperature and Heat: 520,000 elements 500 iterations: 1 hr 15 min (Pentium Xeon 3.06GHz)
2) Outdoor wind environment: 2,210,000 elements 200 iterations: 2 hr 43 min (Pentium Xeon 3.06GHz)
3) Bubble action in a tank 560,000 elements: 3000 iterations: 52 minutes (AthlonMP 2.13GHz)

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Monitor Function

The Windows version of the scSTREAM Solver uses a monitoring function to indicate the status of the calculations process. The status of basic monitoring indicators can be observed in real-time or the process can be interrupted to confirm more detailed velocity and temperature developments within the calculation domain. Batch processing can be resumed at any time.

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Parallel computing

scSTREAM's parallel solver is available for further reducing computation time. The increased speed of parallel solvers is especially valuable for large scale models and for transient calculations. The parallel solver is available in various configurations and is optimized for each supported computer Operating System (OS). The Windows version of the parallel solver can be used in the same manner as the standard Windows solver. This enables the user to use parallel technology without any extra knowledge about parallel computing.


Xeon E5-2690 (2.9GHz,@8cores) x 2 x 16nodes
CentOS 6.2, Infiniband (FDR)


The HPC version of HP-MPI ( enables parallel computation in large-scale decentralized storage cluster bundles.

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List of Solver Function

Mesh Structured grids Rectangular coordinates(for multiblock), Cylindrical coordinates
Unstructured grids Moving object
Numerical scheme Analysis method Finite volume method, Finite element method (inside the moving object)
Pressure correction method (SIMPLEC)
Accuracy of advective term 1D/3D (QUICK) Accuracy of upwind difference
Mesh-related functions
Opening ratio, Fluid occupancy  
Periodic boundary  
Physics model
Computing feature
computation control Steady-state, Transient
Flow analysis Incompressible fluid, Compressible fluid, Non-Newtonian fluid
Forming resin, Multi-fluid flow, Multiple gas mixing
Buoyancy effect (Businesque approximation), Marangoni convection
Turbulence model k-ε model(Standard, RNG, MP, Linear low-Reynolds-number, Non-linear low Reynolds-number)
Two-equation heat transfer model, Algebraic stress model
Thermal analysis Conduction (inside fluid/solid, between moving objects)
Heat transfer (Convection/Turbulence)
Radiation (View factor method/Flux method)
Solar heat source, Joule heat
Mean Radiation Temperature (MRT)
Heat conduction panel
(Conduction, Heat transfer, Radiation)
Diffusion anlaysis Diffusion coefficient, Sedimentation velocity, SORE effect
Ventilation efficiency Index for age of air and life expectancy, Inlet/Outlet contribution rate (SVE3~6)
Index of comfort PMV/SET (Space distribution)
Humidity/Dew condensation analysis Relative/Absolute humidity, Dew condensation/Evaporation calculation
Reaction analysis Chemical reaction, Combustion (Eddy dissipation model), Solidification/Melting
Particle Analysis Marker particle, Mass particle, Reactive particle
Multiphase flow analysis Free surface (MARS method, VOF method)
Electric current Braking effect of a static magnetic field
Thermal circuit model Two-resistor model
Flow conditions Velocity, Volume flow rate, Pressure, Air conditioner (heating/cooling), Fan model (axial/sirocco )
Thermal conditions Temperature, Heat source, Heat transfer coefficient, Contact thermal resistance
Wall condition no-slip, free-slip、Log-law、Power-law、Rough
Pressure conditions Pressure, Pressure loss, Porous media, Flow straightening
Other condition control Table, User-defined function (recompilation is required)
Calculation control Parallel computing* Local mode, Cluster mode
Status monitoring Online monitoring system
Notification E-mail notification service for completion
Job management functions Start, Termination, Stop, Interruption, Batch process, etc.
Large scale calculation 1 billion elements
External program control VB Interface
Additional functions User-defined functions  
Optimization* Kriging method, Multi-Objective Genetic Algorithm (MOGA)
File Output Field file Cradle Field file (FLD , iFLD), Optional output files (.csv, .hpt)

Red: New functions of V10

Blue: Upgraded functions

*Optional license required

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