9.2.2. Common Options

Auto Save

Select the time between automatic saves.

To turn off automatic saves, set Auto Save to Never.


Note:  This option affects more than one CFX product.


Temporary directory

To set a temporary directory, click Browse   to find a convenient directory where the autosave feature will save state files.

9.2.2.1. Appearance

The appearance of the user interface can be controlled from the Appearance options. The default user interface style will be set to that of your machine. For example, on Windows, the user interface has a Windows look to it.

  1. Under GUI Style, select the user interface style to use.

  2. For Font and Formatted Font, specify the fonts to use in the application.


    Note:  It is important not to set the font size too high (over 24 pt. is not recommended) or the dialog boxes might become difficult to read. Setting the font size too small might cause some portions of the text to not be visible on monitors set at low resolutions. It is also important not to set the font to a family such as Webdings, Wingdings, Symbols, or similar type faces, or the dialog boxes become illegible.


Formatted Font has no function in CFD-Post.

9.2.2.2. Threading

Select Enable Threading and set Hardware Capacity Fraction to a value greater than 0 to make use of multiple CPU cores to improve the general performance of applications that share this common setting, at the possible expense of CPU availability for other applications. The maximum allowed value of 1 (default) uses all available CPU cores.


Note:  The use of multithreading in CFD-Post can alter face IDs and node numbering for some surfaces, such as isosurfaces and turbo surfaces, affecting CSV data exported from those surfaces. However, the resulting nodal data remains consistent. If face ID and node numbering consistency is important then you should use only one thread.


9.2.2.3. Setting the Display Units

These settings control the preferred units of the CFX application. Preferred units are:

  • The units of the data that CFD-Post uses when information is displayed.

    For example, if your preferred units are SI and you load a results file that contains data in British Technical units, the values you see in CFD-Post will be in SI.

  • The default units when you enter information.

Note that preferred units are not necessarily the same as the units stored in results files.

To set the preferred units:

  1. Under System, select the unit system to use. Unit systems are sets of quantity types for mass, length, time, and so on.

    The options under System include SI, CGS, English Engineering, British Technical, US Customary, US Engineering, or Custom. Only Custom enables you to redefine a quantity type (for example, to use inches for the dimensions in a file that otherwise used SI units).

    The most common quantity types appear in the main Options dialog box; to see all quantity types, click More Units.

  2. Select or clear Always convert units to Preferred Units.

    If Always convert units to Preferred Units is selected, the units of entered quantities are immediately converted to those set in this dialog box.

    For example, if you have set Velocity to [m s^-1] in this dialog box to make that the preferred velocity unit, and elsewhere you enter 20 [mile hr^-1] for a velocity quantity, the entered value is immediately converted and displayed as 8.94078 [m s^-1].

The two sets of units are:

  • The units presented on this dialog box, which control the default units presented in the user interface, as well as the units used for mesh transformation.

  • The solution units; for details, see CFD-Post Solution Units.

9.2.2.4. Viewer Setup

  1. Select Double Buffering to use two color buffers for improved visualization.

    Double Buffering is a feature supported by most OpenGL implementations. It provides two complete color buffers that swap between each other to animate graphics smoothly. If your implementation of OpenGL does not support double buffering, you can clear this check box.

  2. Select or clear Unlimited Zoom.

    By default, zoom is restricted to prevent graphics problems related to depth sorting. Selecting Unlimited Zoom allows an unrestricted zoom.

  3. Select or clear Use GPU Rendering for Printing.

    If your graphics hardware is compatible with GPU rendering, selecting this preference is strongly recommended.

    When selected, this preference causes saved pictures in CFD-Post to use GPU rendering and saved pictures in CFX-Pre and TurboGrid to (by controlling the default value of a setting in the Save Picture dialog box) use GPU rendering by default.

    When you save a picture with GPU rendering, your graphics hardware renders an image that closely matches what is shown in the viewer.

    If GPU rendering is not set or cannot be used (for example, if compatible GPU hardware is not found), software rendering is used instead. Software rendering is relatively slow and does not always render as shown in the viewer. One benefit of software rendering is that it has no graphics hardware requirements.


    Note:  Batch mode printing in CFX-Pre and TurboGrid does not support GPU rendering.


9.2.2.4.1. Mouse Mapping

The mouse-mapping options enable you to assign viewer actions to mouse clicks and keyboard/mouse combinations. These options are available when running in stand-alone mode. To adjust or view the mouse mapping options, select Edit > Options, then Common > Viewer Setup > Mouse Mapping. For details, see Mouse Button Mapping.