Tips & Tricks

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.

Conditional Expressions in CFD-VIEW Calculator

Conditional expressions can be used in the CFD-VIEW calculator to put logic into the calculator expressions. For example you could create new variables that have a specified range of values. These variables can then be used to make plots and perform calculations.

Calculating Mass Flux in CFD-VIEW

Flow analyses often require information about mass flux computed across a surface in the computational domain. If the surface of interest happens to be a boundary condition (inlet or outlet) or a fluid-fluid interface, the mass flux across it can be found in the output (modelname.out) file if the “Mass Flux Summary” option is turned on under the Out/Print tab in CFD-ACE-GUI.

Particle Tracing in CFD-VIEW

A Particle Trace or Streamline is the trajectory of a particle moving in a fluid. Being able to visualize/analyze this trajectory can be very helpful in understanding flow patterns and flow distribution.

Making Plots Along Constant Radius Curves

How do I plot a variable along the circumference of a circle or circular arc? The above query has been made several times by CFD-ACE+ users. In case of cylindrical geometry, it’s very useful to have a plot of the desired variable along a circle of certain radius.

Creating Strip Charts in CFD-VIEW

The Strip Chart feature in CFD-VIEW is a very useful tool for analyzing time dependent quantities from transient simulations. The feature can be found in the second row of the Operator Palette as shown. This note provides you with an overview of how to use and implement the Strip Chart feature.

Parametric Studies Using SimManager

Parametric studies are an important aspect of CFD analysis. Parametric studies are used to perform trend base analyses, optimize the deign of a device, and/or to study the affect of different parameters on a process (What if? type analysis).

How to Compare the Model Setup Between Two DTF Files

Have you ever wanted to find the differences between two DTF files? If you have, then you will probably be interested in a DTF utility included in your ESI Software installation. The utility is called dtf_diff and can be found in your UTILS_2009.0/bin directory.