Tips & Tricks

CFD-VIEW re-pick buffer feature for object selection

When post-processing complex geometries in CFD-VIEW where there are multiple objects close to each other, it is not always easy to pick the correct one, unless you zoom in a lot. To avoid having to zoom in and zoom out many times, you can use the re-pick buffer feature.

Point Net Feature in CFD-VIEW

A Point Net is primarily used for creating an evenly spaced vector field over existing 3D volumes, 2D surfaces (if the domain is two-dimensional), or cutting planes. The Point Net creates a set of points over the selected entity, and the simulation variable values (such as pressure, temperature, etc.) at these points are derived by interpolation on the underlying mesh.

Importing Multiple DTF Files into a Single Viewer in CFD-VIEW

In certain situations, it may be useful to view multiple DTF files in one viewer in CFD-VIEW. Some reasons could be that parametric studies have been performed on the geometry or you would like to view two different results for the same model, i.e. look at flow velocity and pressure simultaneously.

Updating and Animating a Developing Steady State Simulation in CFD-VIEW

Many users who are running steady-state simulations like to watch the results develop. Most of the time, users hit the "Reload the Same Data File(s)" button again and again. You will be happy to hear that there are two easier ways to do it.

CFD-VIEW Colormap Options: Static, Dynamic, and Cumulative

The Colormap Settings panel in CFD-VIEW assigns colors to data sets. Identical data values on an object are displayed with the same color if they are using the same colormap display. Three options offer the user the opportunity to select the mode for updating the colormap as the underlying data changes, for example during transient simulations.

Saving Surface Data to a View Object File

Often, it is useful or necessary to take data on a surface and perform further calculations on this data using another software package. To enable you to write this type of data, CFD-VIEW has a View Object File format ("*.vof"). CFD-VIEW uses this file format to store the X, Y, and Z locations of the nodes on the surface along with the associated data that was written to the DTF (e.g. U, V, W, P, etc.)

Carpet Plots in CFD-VIEW

Carpet Plots are used for visualization of computed data on 2D surfaces. A carpet plot is created by displacing the 2D surface vertically based on one of the variables computed over that surface. The carpet plot can also be colored by the same or different variable.

Grouping Objects in CFD-VIEW

By using the Group feature in CFD-VIEW, you can easily manipulate multiple objects.Oneof the advantages for large models is it will decrease the size of the object list.

Use Perspective View for More Natural Visualizations

By default, CFD-VIEW shows you a ‘parallel’ perspective on your model where the scene has no depth to it.   In reality, things that are farther away from our eyes appear closer together within our field of vision.

Post-Processing Using Iso-Surfaces

In many cases, user simulates a multiphase flow inside a duct. It is sometimes useful to create a nice model in CFD-VIEW which can clearly present the flow inside the duct. The following example is based on Tesla Valve geometry, which is being filled by a liquid in transient mode.