Tips & Tricks

Using CFD-VIEW Scripting for transient simulations post-processing
With the Python scripting capabilities of CFD-VIEW, you can quickly and easily perform the repetitive tasks you encounter when post-processing transient simulations.
Abraham Meganathan CFD

Butterfly Faces Meshing Tool in CFD-GEOM
In CFD-GEOM, a convenient meshing tool called "Butterfly Faces" allows the user to quickly and automatically create a structured mesh for circular topologies. The resulting mesh consists of 5 structured faces (4 sides and 1 core) inside a circle. Parameters are available to set the size of the core and the mesh density.
Abraham Meganathan CFD

Always Make Sure You Have a Good Mesh Quality
The mesh has a great influence on the solver convergence and solution of every CFD Simulation. The user is strongly advised to check the quality of a numerical mesh.
Abraham Meganathan CFD

CFD-VIEW: Save Smaller mdl Files
While working with CFD-VIEW, the user has the option of saving an mdl file. This file stores all the entities created in CFD-VIEW, from the point the DTF file (or other data file) was imported, to their current state at the time of saving. The user can thus reopen this file anytime later to resume work.
Abraham Meganathan CFD

Exporting STL Files From CFD-GEOM
A CFD simulation process starts from an accurate representation of the boundaries that usually originates directly from CAD systems. STL and IGES are two of the most common output formats used as a starting point for mesh generation. STL (StereoLithography) files represent 3D surface geometries using a triangular mesh allowing unambiguous transfer of files from one system to another.
Abraham Meganathan CFD

Plotter Operations with CFD-VIEW
The Plotter operator in CFD-VIEW supports signal processing for Time History data. A previous user tip – Digital Signal Processing using CFD-VIEW – shows how time history date can be made available and how to perform a PSD on a periodic signal. The aim of this new user tip is to list all options supported by the Plotter Operator.
Abraham Meganathan CFD

Wireframe Display in CFD-VisCART
Rotation, zoom, pan and other graphical operations require re-drawing of the model in the new position within the graphics window. When dealing with large models, these operations can slow down considerably due to the huge amount of graphical data that needs to be processed and re-drawn.
Abraham Meganathan CFD

Getting Average Quantities in CFD-VIEW
Many times, post-processing results requires computing average quantities of variables over a surface or volume. CFD-VIEW makes it easy with three calculator functions under the ‘Miscellaneous’ function category, as shown in Figure 1.
Abraham Meganathan CFD

Avoiding Chimera Errors in CFD-FASTRAN
This note discusses a common error encountered by users when trying chimera meshes in CFD-FASTRAN. Such errors are easy to avoid and hopefully this note will assist you.
Abraham Meganathan CFD

Inverting Models in CFD-CADalyzer
Computational Fluid Dynamics (CFD) requires the discretization of a geometry bounded by it's wetted surfaces. In CAD, the solid parts are created without the corresponding fluid volumes, i.e. negative space.
Abraham Meganathan CFD