When adding a new monitor and restarting the calculation for a design point, the existing residuals for that design point will be lost. To preserve the residual history from previous iterations, create a copy of the .fconverg file for that design point before restarting the calculation. (854394)

The cfd_hsf library files and license increment are required to use the Two Temperature model, which can improve the accuracy of hypersonic flow simulations. If you would like to use this feature, please check for the availability of the cfd_hsf license increment in your license file and contact your Ansys representative to add this increment if needed.

Linux: Fluent now uses Intel MPI 2021 by default, enabling compatibility with newer platforms. However, this newer MPI library might cause issues on older clusters (related to the UCX library version bundled by the system).

Two workarounds are possible for this issue:

The Post-Analysis (Beta) feature is a beta feature that currently includes some important limitations (528941):

Fluent Aero requires an Enterprise license. If an Enterprise level license is not available when connecting to a simulation, Fluent Aero will either display the following error message, This application is unable to checkout a license, or perpetually remain in a Waiting to connect state with no error message given. You can press the Stop button to exit this state. On Linux machines, you can look at the recent licdebug files inside the .ansys directory of your account to determine if the license check failed. (913505)

If a calculation is paused due to a temporary disconnection of the license server, the calculation will not automatically resume if a license server reconnects. However, once the license resumes, you can continue by pressing the Continue button. (539807)

If the disk space is 100% full while attempting to save a case or update a design point, the file save operation of the run.settings file may fail, leading to an incomplete or empty file written on the disk. This results in a corrupted run.settings file that will prevent the user from reloading the simulation the next time the user tries to open it. (1002468)

2D plots of surface data (for example, Pressure Coefficient plots along wing sections) created using Results → Plots may contain extra lines that connect non-neighbouring solution values. (543369)

Performing an initialize or iterate command from the Solution workspace (for example, under Solution → Calculation Activities → Execute Commands) is not supported while using Fluent Aero, and doing so may have unintended consequences on your Fluent Aero simulation.