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Thermo-fluid analysis software

Thermo-fluid analysis software is a simulation tool used for analyzing complex thermal/fluid phenomena. Software simulation enables predicting performance prior to hardware prototype. As a result, the tools can be used early in the planning state of product development to filter 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 non-experts.

Figure. Example of comparison between analysis cases
Comparison of pressure at an intake port with different engine valve lift


Software Cradle offers following four software that help you achieve faster and more efficient product development.



General Purpose Thermo-fluid Analysis System with Structured Mesh



Thermal Design Tool for Electronics Design



General Purpose Thermo-fluid Analysis System with Unstructured Mesh



CAD Data Translation Tool for CFD Analysis

scSTREAM and SC/Tetra

Cradle offers two different types of thermo-fluid analysis tools: scSTREAM (and HeatDesigner for electronics cooling) and SC/Tetra. scSTREAM and HeatDesigner use structured meshes while SC/Tetra uses an unstructured mesh.

A structured mesh is simple, easy to construct, and fast to solve. This mesh is comprised of many small cuboids so it can only approximate curved or angled surfaces. It is most useful for applications where tiny details and surface curvature or angles do not have a strong effect on the overall flow field. Examples of applications for structured mesh include electronics cooling, HVAC, and architecture.

An unstructured mesh contains more complex element shapes (tetrahedron, pentahedron, and hexahedron). These elements provide a flexible way to represent curved surfaces. As a result, SC/Tetra is used for applications where precise representation of the geometry is critical. Examples of unstructured mesh applications include fan blades and automotive aerodynamics.

Mesh generation

Analysis Procedure

In scSTREAM and SC/Tetra, analyses are performed using a set of three applications Pre-processor, Solver, and Postprocessor.

Analysis procedure



1 Create analysis model, 2 Set analysis conditions, and 3 Generate mesh

Create analysis model
Import 3D CAD data.
Model geometries in scSTREAM (and HeatDesigner) use a built-in modeler.
Modify or simplify geometries as necessary to reduce computational load.
Set Analysis Conditions
Set material properties for parts and specify boundary conditions (flow, heat).
Generate Mesh
Set mesh size and density. Mesh generation is processed automatically.




Flow/thermal calculations are performed using input data created in the Pre-processor. During the computation, calculation status can be monitored. The amount of time required for the computation depends on the size of the model (number of mesh elements), quality of the model, and hardware. A parallel solver is available for reducing the computational time of large-scale models.




The solver outputs field data for visualization using the Post-processor. This permits examining flow, temperature, pressure, and other analysis results. Visualized results can be converted to images, animations and/or CradleViewer files for later use.


Individual Option Tools

Engineering Services

Software Cradle is a proven and reliable thermo-­fluid analysis partner that provides all services from software development to engineering support.
Click here to find more details.


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