Tips & Tricks

Here you will find articles on how to solve specific issues related to ESI's software solutions. Missing ESI products will be added progressively. Each article has a short abstract which is accessible to everyone. As logged users you can see the full article with all attached screenshots, and you can post comments related to each article.

How to Model DC Plasma Discharge Using CFD-ACE+
There is no direct option in CFD-ACE-GUI to set up a DC plasma discharge model, but the existing CCP solver can be used to model a DC Plasma discharge problem.
Abraham Meganathan
CFD
46

Blanking by VC/BC Type in CFD-ACE-GUI
In any given model, you may have several types of boundary conditions and/or volume conditions. You could have inlets, outlets, walls, rotating walls, etc. as well as solid and fluid regions in your model. Have you ever wondered how to blank entities depending on...
Abraham Meganathan
CFD
9

Unit menu options in CFD-ACE-GUI
Often, the data available to you is not in SI units, but in other units like CGS or English, or a combination of different units. Having different unit systems available in the set-up process is helpful since you do not have to convert the units yourself.
Abraham Meganathan
CFD
6

Guidelines for Specification of Turbulence at Inflow Boundaries
In this user tip, we discuss how to calculate and set appropriate turbulence values for inflow boundary conditions (inlets or freestream boundaries). Rather than starting with the turbulence model variables themselves it is often easier to think of turbulence in terms...
Abraham Meganathan
CFD
100

Using the Contact Model In Structural Simulations
While solving structural problems, in a large number of cases there are physical contacts between two solid components. Numerically it is difficult to handle this situation as the grid volume (on the fluid side) collapses to zero at the contact surfaces.
Abraham Meganathan
CFD
23

Database Manager: ESI-CFD, Local, and modelname.DTF Folders
When you open the Database Manager in CFD-ACE-GUI, you will notice that there are three folders: ESI-CFD, Local, and a modelname.DTF folder. These folders are slightly different in behavior. These differences will be discussed in this user tip.
Abraham Meganathan
CFD
7

Using the Thin Wall BC to Model Thermal Resistance
CFD-ACE+ has a unique Boundary Condition feature called "Thin Walls". This feature can be used to model very thin entities such as baffles, plates, and thermal resistances. Since the entity is very thin, you can actually ignore the volume it displaces...
Abraham Meganathan
CFD
31

Using Arbitrary Interfaces for Sliding Meshes in CFD-ACE+
When using the Grid Deformation module in CFD-ACE+ with systems containing rotating parts, the system may require the grid to rotate 360 degrees. However, this is not possible since the grid will become highly skewed/stretched.
Abraham Meganathan
CFD
38

Trend Based Analysis
One of the most powerful uses for CFD modeling efforts is trend based analysis. As the name suggests, this type of analysis work focuses on the TRENDS of simulations rather than concentrating on the absolute result of a single simulation.
Abraham Meganathan
CFD
5

Using Mixing Rules in the CFD-ACE-GUI Database Manager
Mixing rules can be used to define the properties of a system. Mixing rules state the method which the solver will use to evaluate the species/analyte properties in conjunction with the local species/analyte composition to determine the computational cell properties.
Abraham Meganathan
CFD
18