Cradle provides highly reliable, multiphysicsfocused computational fluid dynamics (CFD), thermal dynamics software and integrated simulation tools that enhance customers’ product quality and creativity.
Since software simulation enables predicting performance without creating a hardware prototype, the tools can be used early in the planning state of product development to sift through preliminary design concepts. Simulation can also be used to predict performance of products where it is difficult to make experimental measurements. In addition, simulation software can be used to visualize invisible fluid flow and heat transfer. This results in increased engineering understanding while providing a vehicle for communicating this knowledge to nonexperts
Software Cradle offers two different types of thermofluid analysis tools:
scSTREAM and HeatDesigner with structured mesh. scSTREAM thermofluid software has serviced the electronics and architectural industries for more than thirty years. The everevolving software is characterized by its overwhelmingly userfriendly interfaces and high speed processing. HeatDesigner is based on scSTREAM and is specially developed for thermal design of electronics products. HeatDesigner provides physical functions required only for thermal design with its simple interfaces and powerful computing performance.
 Designing thermal and air flow inside an office
 Evaluating air flow around buildings
 Evaluating heat island effect
 Heat dissipation design of electronics and precision instruments
 Dustproof and moistureproof review of electronics and precision instruments
 Multiphase flow analysis such as mixing, spray, solidification, melting, boiling, and condensation
 Analysis involving moving objects such as cars, controlled equipment, hydraulic and pneumatic equipment, and robots
scFLOW and SC/Tetra with unstructured mesh. SC/Tetra has been characterized by sophisticated mesh generation function, high speed computing capability, and userfriendly features throughout the operation. As its advanced version, scFLOW has been released. It is equipped with more stable Solver that achieves calculation speed three times faster (at maximum) than before, and new Preprocessor that helps entrylevel users build complicated models and high quality mesh. scFLOW, the new generation software, keeps on evolving.
 Aerodynamic simulation for automobiles
 Evaluation of rotational devices such as fans and pumps
 Prediction of cavitation and erosion
 Design of household electric appliances such as refrigerators and wash machines
 Internal flow analysis of ducts and nozzle
 Analysis involving chemical reactions including reactor, catalyst, furnace, combustor, and CVD
 Analyses of multiphase flow phenomena such as mixing, blending, spraying, solidification, melting, boiling, and condensation.
CFD Flow Software – scSTREAM i HeatDesigner – features
Preprocessor
scSTREAM  HeatDesigner  

Modeling  CAD data Interface (import)  Parasolid, STEP, JT, STL, IGES, ACIS, CATIA V6, CATIA V5, CATIA V4, Creo Elements/Pro (Pro/Engineer), SOLIDWORKS, NX, Solid Edge, Inventor, DWG, DXF (2D, 3Dface), 3DM, VDAFS, XGL, IDF, Autodesk Revit, ARCHICAD, Nastran, SHAPE, 3ds, SketchUp, IFC, PRE, MDL, NFB, Gerber (RS274D, RS274X), IPC2581B  Parasolid, STEP, JT, STL, IGES, ACIS, CATIA V6, CATIA V5, CATIA V4, Creo Elements/Pro (Pro/Engineer), SOLIDWORKS, NX, Solid Edge, Inventor, DWG, DXF (2D, 3Dface), 3DM, VDAFS, XGL, IDF, MDL, NFB, Gerber (RS274D, RS274X), IPC2581B 
CAD data Interface (export)  Parasolid, STL, MDL, NFB  Parasolid, STL, MDL, NFB  
Primitives  Cuboid, hexagon, cylinder, cone, sphere, revolved rectangle, point, panel (orthogonal, quadrilateral), 2.5D solid part, pipe components, fan (flat, axial, blower), electronics (including chassis, thermal circuit model (tworesistor, DELPHI, multiresistor), fin, slits, Peltier device, heat pipes), airconditioning appliances (including 4 way cassette, 2 way cassette, wall type, floor type, outdoor unit, anemostat, linear diffuser)  Cuboid, hexagon, cylinder, cone, sphere, point, panel (orthogonal, quadrilateral), 2.5D solid part, pipe components, fan (flat, axial, blower), electronics (including chassis, thermal circuit model (tworesistor, DELPHI, multiresistor), fin, slits, Peltier device, heat pipes)  
Geometry modification  Boolean operation (sum, subtract,multiply, divide), shape simplification (deformer, filling hole, projection deletion, R fillet deletion), copy, mirror copy, wrapping, solid edit  Boolean operation (sum, subtract, multiply, divide), shape simplification (deformer, filling hole, projection deletion, R fillet deletion), copy, mirror copy, wrapping. solid edit  
Registration of parts library  ●  ●  
Mesh generation  Tetrahedron  ● (finite element model)  
Hexahedron  ● (cylindrical coordinate system)  
Cuboid  ●  ●  
Cutcell  ●  
Conditions  Easy setup through wizard  ●  ● 
Preset default conditions  ●  ●  
Unused dialogs hidden  ●  ●  
Collective settings to undefined regions  ●  ●  
Material property library (editable)  ●  ●  
Laminated materials  ●  ●  
Absorptiondesorption property calculation  ●  
Operation and control environment  VB Interface  ●  ● 
Selectable mouse operation modes  ●  ●  
Mapping  ●  
Viewer mode  ●  ● 
Solver
scSTREAM  HeatDesigner  

Mesh  Structured mesh  ● (Cartesian or cylindrical coordinate)  ● (Cartesian coordinate) 
Unstructured mesh  ● (finite element model)  
Multiblock  ●  ●  
Cutcell  ● (solid, panel, thin shape)  
Moving objects  ●  
6degreeoffreedom motion (6DOF)  ●  
Numerical scheme  Finite volume method  ●  ● 
Pressure correction  SIMPLEC, SIMPLE  SIMPLEC  
Convection term accuracy  1st/3rd (QUICK/WENO) upwind scheme  1st/3rd (QUICK/WENO) upwind scheme  
Matrix  MICCG, ILUCR, ILUCGS, FMGCG, FMGCGS  MICCG, ILUCR, ILUCGS, FMGCG, FMGCGS  
Nonlinear coupled solver  ● (JFNK method)  
Steadystate/transient calculation  ●  ●  
Flow types  Incompressible fluid  ●  ● 
Compressible fluid  ●  
NonNewtonian fluid  ●  
Buoyancy (Boussinesq approximation)  ●  ●  
Buoyancy (lowMachnumber approximation)  ●  
Multiple fluids  ●  
Foaming resin model  ●  
Turbulence models  Standard kε model, RNG kε model, MP kε model, AKN linear lowReynoldsnumber model, MPAKN linear lowReynoldsnumber model, Nonlinear lowReynoldsnumber model, Improved LK kε model, Twoequation heat transfer (NK) model (high Reynolds number), Twoequation heat transfer (AKN) model (linear lowReynoldsnumber), LES (Smagorinsky, Dynamic Smagorinsky, WALE, mixedtime scale)  Standard kε model,AKN linear lowReynoldsnumber model  
Thermal analysis  Heat conduction (fluid/solid)  ●  ● 
Convective heat transfer  ●  ●  
Heat radiation (view factor method)  ●  ●  
Heat radiation (flux method)  ●  
Heat conduction panel  ●  ●  
Solar radiation  ● (direct / sky solar radiation / reflection）  
Lamp (graphic output of rays)  ●  
Joule heat  ●  
Mean radiation temperature calculation  ●  
Global solar radiation calculation  ●  
Diffusion analysis  Diffusivity  ●  
Sedimentation rate  ●  
SORET effect  ●  
Index for ventilation effciency  Age of air, life expectancy of air, inlet contribution rate  ●  
Thermal comfort index  PMV / SET* / WBGT  ●  
Illumination analysis  Solar radiation / lamp (graphic output of rays)  ●  
Humidity/dew condensation analysis  Relative humidity / absolute humidity  ●  
Dew condensation  ●  
Humidity transfer in solid  ●  
Reaction analysis  Chemical reaction  ●  
Combustion  ● Eddydissipation model, PDF (Probability Density Function) method  
Particle analysis  Marker particles  ●  
Mass particles  ●  
Reactant particles  ●  
Charged particles  ●  
Spray model  ●  
Transforming dew condensation  ●  
Transforming fluid/volume rate  ● (MARS method)  
Discrete element method (DEM)  Contact model  Linear spring dashpot model, HertzMindlin model, WaltonBraun model  
Cloth model  ● (command input)  
Cohesion model  ●  
Thermal  ●  
Ad/desorption (Humidity)  ●  
Multiphase flow analysis  Free surface  ● (VOF method, MARS method)  
Solidification / melting  ● (VOF method, MARS method)  
Boiling / condensation  ● (MARS method)  
Evaporation / condensation  ● (MARS method)  
Current analysis  Conductor current  ●  
Conductor potential  ●  
Braking effect of static magnetic field  ●  
Electric field analysis  Electrostatic field  ●  
Thermal circuit model  2resistor / multiresistor / DELPHI model  ●  ● 
Thermoregulation model  JOS2  ●  
Optimization  Topology optimization  ●  
Flow conditions  Velocity  ●  ● 
Powerlaw velocity  ●  
Volume flow rate  ●  ●  
Radial volume flow rate  ●  
Pressure  
(static, total)  ●  ●  
Natural inflow / outflow  ●  ●  
Airconditioner model  ●  
Fan model  ●  ●  
Wave generation, wave dissipation  ● (MARS method)  
Thermal conditions  Fixed temperature  ●  ● 
Heat source  ●  ●  
Heat transfer coefficient  ●  ●  
Contact heat transfer coefficient  ●  ●  
Wall conditions  Noslip (stationary wall)  ●  ● 
Freeslip (symmetry wall)  ●  ●  
Loglaw condition  ●  ●  
Powerlaw condition  ●  
Surface roughness  ●  ●  
Pressure conditions  Fixed pressure  ●  ● 
Pressure loss  ●  ●  
Porous media  ●  
Source conditions  Volume force/pressure loss  ●  ● 
Heat source  ●  ●  
Smoke source (diffusing materials)  ●  
Turbulence generation  ●  
Humidification  ●  
Plant canopy  ●  
Userdefined conditions  Variables table / functions  ●  ● 
Scripts (JavaScript)  ●  ●  
Userdefined function (compilation required)  ●  
Calculation control environment  Job management  ●  ● 
Monitoring the calculation status  ●  ●  
Email notification of the calculation  ●  ●  
VB interface  ●  ●  
Output post files  Software Cradle post files (FLD, iFLD)  Software Cradle post files (FLD, iFLD)  
Output for third party software  Abaqus, Nastran, Femtet, ADVENTURECluster, JMAGDesigner, EMSolution, Optimus, Isight, modeFRONTIER Autodesk Revit, ARCHICAD, ThermoRender, EnSight, FieldView, Adams, Marc  Abaqus, Nastran, Femtet, ADVENTURECluster, JMAGDesigner, EMSolution, Optimus, Isight, modeFRONTIER, EnSight, FieldView 
Postprocessor
scSTREAM  HeatDesigner  

Drawing functions  Mesh, vector, contour plots  ●  
Isosurface, streamline, pathline, volume rendering  ●  
Geometry display  ● (STL file, NFB file, Wavefront OBJ file) 

2D graph  ●  
Mirror/Periodical copy  ●  
Vortex center  ●  
Drawing position / orientation  Arbitrary plane, surface, entire volume, cylinder  ●  
Streamlines, isosurface  ●  
Pathlines  ●  
Arbitrary scaling  ●  
Arbitrary pick  ● (scalar / vector value) 

Special effects  Oil flow  ● (on plane / surface) 

Texture mapping  ● (on plane / surface, arbitrary geometry with texture) 

Lighting, luster, gradation  ● (preset, arbitrary) 

Transparency, waterlike expression, shadow  ●  
Ray, Cloth, String, Surface of particles, Road line, Heat transfer, IPC2581  ●  
Photorealistic  ●  
Animation  Vector animation  ●  
Flow line animation  ●  
Cutplane weeping  ●  
Marker particle  ● (turbulent diffusion effect) 

Automatic translation of view point  ● (view / focus points can be set) 

Keyframe animation, Time line  ●  
Animation interpolated between cycles  ●  
Analysis results  Variable registration (function registration)  ●  
Integral (surface / volume)  ● (scalar / vector integration) 

Comparison  
Projected area calculation  ● (clipping function, image compare) 

Automatic search of the local max / min positions  ●  
Import of CSV data  ●  
Automatic change of colorbar  ●  
Complex values data graphing  ● (preset, arbitrary) 

Data image output  Microsoft BMP, JPG, PNG  ●  
CradleViewer  ● (size, resolution adjustable) 

AVI, WMV, MP4  ● (support steadystate / transient animation, attach to Office applications) 

VRML,FBX,STL  ●  
Copy&paste 3D onto Powerpoint  ●  
Operation and control environment  Selectable help function  ●  
OpenGL (Hardware acceleration, software rendering)  ●  
VB interface  ●  
Selectable mouse operation modes  ●  
Stereoscopic view (sidebyside)  ●  
Plugin functionality  ●  
Partial open field file by SSH  ● 
CFD Software – scFLOW i SC/Tetra – features
Preprocessor
scFLOW  SC/Tetra  

Modeling  CAD data Interface (import)  Parasolid, STEP, JT, STL, IGES, ACIS, CATIA V6, CATIA V5, CATIA V4, Creo Elements/Pro (Pro/Engineer), SOLIDWORKS, NX, Solid Edge, Inventor, DWG, DXF (3Dface), 3DM, VDAFS, IFC, Nastran, MDL  Parasolid, STEP, STL, IGES, ACIS, CATIA V5, CATIA V4, Creo Elements/Pro (Pro/Engineer), SOLIDWORKS, NX, Solid Edge, Inventor, DXF (3Dface), VDAFS, Abaqus, Nastran, Design Space, Plot3D, CGNS 
CAD data Interface (export)  Parasolid, MDL  STL, Nastran, CGNS, Parasolid, MDL  
Primitives  Cuboid, cylinder, sphere  Cuboid, cylinder, sphere, rectangle (panel)  
Geometry modification  Data cleaning, editing solid, editing sheet, crosssection and extraction, coordinate conversion, wrapping  Data cleaning, editing solid, editing sheet, crosssection and extraction, coordinate conversion, turbomachinery (singlepitch extraction), wrapping  
Mesh generation and faceter  Tetrahedron  ●  
Pentahedron (prism, pyramid)  ●  
Hexahedron  ● (manual setting） 

Cuboid  ● (when the spacial hexahedral mesh is used)  ● (when the internal hexahedral mesh is used) 

Polygon (polyhedron)  ●  
Sweep mesh  ●  ●  
Thin mesh  ●  
Voxel fitting mesher  ●  
Solidbased surface mesher  ●  
Parasolid faceter  ●  ●  
Solidbased facetor  ●  
Conditions  Easy setup through wizard  ●  ● 
Unused dialogs hidden  ●  ●  
Collective settings to undefined regions  ●  ●  
Material property library (editable)  ●  ●  
Laminated materials  ●  ● (laminated panel) 

Operation and control environment  VB Interface  ●  ● 
Selectable mouse operation modes  ●  ●  
Mapping  ●  ●  
Viewer mode  ● 
Solver
scFLOW  SC/Tetra  

Mesh  Unstructured mesh  ●  ● 
Overset mesh  ●  ●  
Mesh adaptation  ●  ●  
Mesh adaptation in solver  ●  
Discontinuous mesh interface  ●  ●  
ALE (rotation, translation, stretch)  ●  ●  
6degreeoffreedom motion (6DOF)  ●  ●  
Mixing plane  ●  ●  
Numerical scheme  Finite volume method  ●  ● 
Pressure correction  SIMPLEC, SIMPLE, PISO  SIMPLEC, SIMPLE, revised SIMPLEC  
Convection term accuracy  1st/2nd order (MUSCL/QUICK) upwind scheme, 2ndorder central difference (LES）  1st/2nd order (MUSCL/QUICK) upwind scheme, 2ndorder central difference (LES）  
Matrix  MILUCGSTAB, AMGCGSTAB, CGCCGSTAB  MILUCGSTAB, AMG, AMGCGSTAB, CGCCGSTAB  
Density based  ● (defect correction method, JFNK method)  ● (defect correction method) 

Steadystate / transient calculation  ●  ●  
Flow types  Incompressible fluid  ●  ● 
Compressible  ●  ●  
fluid  
NonNewtonian  ●  ●  
fluid  
Buoyancy (Boussinesq approximation)  ●  ●  
Multiple fluids  ●  ●  
Gas mixing  ●  ●  
Turbulence models  Standard kε model, RNG kε model, MP kε model, AKN linear lowReynolds number kε model, realizable kε model, SST kω model, MPAKN linear lowReynolds number kε model, SpalartAllmaras one equation model, LKE kkLε model, SSTSAS model, LES, DES  Standard kε model, RNG kε model, MP kε model, AKN linear lowReynolds number kε model, GPC linear lowReynolds number kε model, nonlinear lowReynolds number kε model, realizable kε model, SST kω model, MPAKN linear lowReynolds number kε model, SpalartAllmaras one equation model, LKE kkLω model, SSTSAS model, LES, DES, VLES  
Thermal analysis  Heat conduction (fluid/solid)  ●  ● 
Convective heat transfer  ●  ●  
Heat radiation (view factor method)  ●  ●  
Heat radiation (flux method)  ●  ●  
Heat conduction panel  ●  ●  
Moving heat conduction panel  ●  
Solar radiation  ●  ●  
Joule heat  ●  ●  
Mean radiation temperature calculation  ●  ●  
Graphic output of rays from lamp  ●  ●  
Diffusion analysis  Diffusivity  ●  ● 
SORET effect  ●  ●  
Passive scalar  ●  
Index for ventilation effciency / thermal comfort  PMV/SET*  ●  ● 
Humidity / dew condensation analysis  Relative humidity / absolute humidity  ●  ● 
Dew condensation  ●  ●  
Reaction analysis  Chemical reaction  ●  ● 
Combustion reaction  ● Eddydissipation model  ● Eddydissipation model 

Thermal CVD analysis  ●  
Particle analysis  Marker particles  ●  ● 
Mass particles  ●  ●  
Charged particles  ● (userdefined function)  ● (userdefined function) 

Spray model  ●  ●  
Liquid film  ●  ●  
Transforming dew condensation  ●  ●  
Transforming fluid / volume rate  ● (VOF method)  ● (VOF method) 

Discrete element method (DEM)  Contact model  Linear spring dashpot model, HertzMindlin model, WaltonBraun model  
Cloth model  ●  
String model  ●  
Cluster model  ●  
Cohesion model  ●  
Thermal  ●  
Ad / desorption (Humidity)  ●  
Dissolution  ●  
Dynamic domain  ●  
Multiphase flow analysis  Free surface  ● (VOF method, steadystate/transient, multiphase)  ● (VOF method, transient) 
Solidification / melting  ●  ●  
Boil / condensation  ● (VOF method, Dispersed multiphase flow)  ● (VOF method) 

Evaporation / condensation  ●  ●  
Cavitation model / erosion index  ●  ●  
Dispersed multiphase flow  ●  ●  
Population balance model  ●  
Aerodynamic noise analysis  Ffowcs Williams & Hawkings' equation  ●  ● 
Weak compressible flow model  ●  
Sound source detection model  ●  ●  
Current analysis  Conductor current  ●  ● 
Conductor potential  ●  ●  
Thermoregulation model  JOS, JOS2  ●  ● 
Flow conditions  Velocity  ●  ● 
Volume flow rate  ●  ●  
Mass flow rate  ●  ●  
Power law  ●  
Pressure (static pressure / total pressure)  ●  ●  
Natural inflow / outflow  ●  ●  
Fan model  ●  ●  
Wave generation, wave dissipation  ●  ● (VOF method) 

Thermal conditions  Fixed temperature  ●  ● 
Heat source  ●  ●  
Heat transfer coefficient  ●  ●  
Contact heat transfer coefficient  ●  ●  
Wall conditions  Noslip (stationary wall)  ●  ● 
Freeslip (symmetry wall)  ●  ●  
Loglaw condition  ●  ●  
LowRenumber adaptive wall function  ●  ●  
Surface roughness  ●  ●  
Wall model (LES)  ●  
Pressure conditions  Fixed pressure  ●  ● 
Pressure loss  ●  ●  
Porous media  ●  ●  
Source conditions  Volume force/pressure loss  ●  ● 
Heat generation  ●  ●  
Smoke source (diffusing materials)  ●  ●  
Turbulence generation  ●  ●  
Solid shear heating  ●  ●  
Simplified propeller model  ●  ●  
Simplified rotor model  ●  
Userdefined conditions  Variables table / functions  ●  ● 
Script functions (JavaScript)  ●  
Userdefined function (compilation required)  ●  ●  
Calculation control environment  Job management  ●  ● 
Monitoring the calculation status  ●  ●  
Email notification of the calculation  ●  ●  
VB interface  ●  ●  
Output for visualization  Wavelet transform  ●  
Post files output  Software Cradle post files (FPH)  Software Cradle post files (FLD, iFLD)  
Output for third party software  Abaqus, Nastran, Actran, Femtet, Adams, Marc, JMAGDesigner, EMSolution, FlowNoise, GTSUITE, FieldView  Abaqus, Nastran, Femtet, ADVENTURECluster, JMAGDesigner, EMSolution, Optimus, Isight, modeFRONTIER, LMS Virtual.Lab, Actran, FlowNoise, GTSUITE, KULI, Flowmaster, LOGE, EnSight, FieldView, AVS 
Postprocessor
scFLOW  SC/Tetra  

Drawing functions  Mesh, vector, contour plots  ●  
Isosurface, streamline, pathline, volume rendering  ●  
Geometry display  ● (STL file, NFB file, Wavefront OBJ file) 

2D graph  ●  
Mirror/Periodical copy  ●  
Vortex center  ●  
Drawing position / orientation  Arbitrary plane, surface, entire volume, cylinder  ●  
Streamlines, isosurface  ●  
Pathlines  ●  
Arbitrary scaling  ●  
Arbitrary pick  ● (scalar / vector value) 

Special effects  Oil flow  ● (on plane / surface) 

Texture mapping  ● (on plane / surface, arbitrary geometry with texture) 

Lighting, luster, gradation  ● (preset, arbitrary) 

Transparency, waterlike expression, shadow  ●  
Ray, Cloth, String, Surface of particles, Road line, Heat transfer, IPC2581  ●  
Photorealistic  ●  
Animation  Vector animation  ●  
Flow line animation  ●  
Cutplane sweeping  ●  
Marker particle  ● (turbulent diffusion effect) 

Automatic translation of view point  ● (view / focus points can be set) 

Keyframe animation, Time line  ●  
Animation interpolated between cycles  ●  
Analysis results  Variable registration (function registration)  ●  
Integral (surface / volume)  ● (scalar / vector integration) 

Comparison  ● (clipping function, image compare) 

Projected area calculation  ●  
Automatic search of the local max / min positions  ●  
Import of CSV data  ●  
Automatic change of colorbar  ● (preset, arbitrary) 

Complex values data graphing  ●  
Data image output  Microsoft BMP, JPG, PNG  ● (size, resolution adjustable) 

CradleViewer  ● (support steadystate / transient animation, attach to Office applications) 

AVI, WMV, MP4  ●  
VRML,FBX,STL  ●  
Copy&paste 3D onto Powerpoint  ●  
Operation and control environment  Selectable help function  ●  
OpenGL (Hardware acceleration, software rendering)  ●  
VB interface  ●  
Selectable mouse operation modes  ●  
Stereoscopic view  ●  
Plugin functionality  ●  
Partial open field file by SSH  ● 