This text command is removed, in order to promote clarity during setup. The ability to define mesh refinement based on feature angles is now only available by defining angular refinement settings for one or more face zones using the following text command: mesh/rapid-octree/mesh-sizing/add-surface-sizing.

Enables/disables the smooth mesh coarsening option, which causes the refined cells to better follow the geometry. This option can reduce the overall cell count while maintaining a comparable level of accuracy.

Creates one or more copies of one or more cell zones that are offset from the original zones and each other by a single specified delta value. The delta value can be a translational distance or a rotational angle. In the copied zones: while the face zones that end up being on the external boundaries are all converted to walls, any internal face zones (that is, those between cell zones when copying a cluster of adjacent cell zones) will retain their original boundary conditions; any existing cell data is initialized to a constant value; and non-conformal interfaces and dynamic zones are not copied. Apart from these changes, the model settings in the copies are the same as in the original zones. For further details, see Copying Cell Zones in the Fluent User's Guide.

Creates one or more copies of one or more cell zones that are offset from the original zones by various specified values. The values can be translational distances or rotational angles. In the copied zones: while the face zones that end up being on the external boundaries are all converted to walls, any internal face zones (that is, those between cell zones when copying a cluster of adjacent cell zones) will retain their original boundary conditions; any existing cell data is initialized to a constant value; and non-conformal interfaces and dynamic zones are not copied. Apart from these changes, the model settings in the copies are the same as in the original zones. For further details, see Copying Cell Zones in the Fluent User's Guide.

A new Augment list of cells? prompt is added, which allows you to specify whether you want to augment the list of cells; enabling such augmentation can add additional adjacent cells to the deletion list that would otherwise be isolated after deletion, which can help to ensure numerical validity.

For DPM cases, an option has been added to enable the in situ data reduction on walls with the Lagrangian wall-film boundary condition.

For cases that solve the potential field, new methods, cyl-orthotropic, orthotropic, and anisotropic, have been added for specifying electrical conductivity of solid materials.

Automatically creates mesh interfaces. The kind of boundary zones that are paired to make the mesh interfaces depends on the creation method: when the define/mesh-interfaces/one-to-one-pairing? text command is enabled, all wall and interface boundary zones are paired; when the define/mesh-interfaces/one-to-one-pairing? text command is disabled, some or all of the interface boundary zones are paired.

Specifies pairs of zones that are to be excluded when one-to-one mesh interfaces are created. You must enter an even number of unique zones.

This text command is replaced by define/mesh-interfaces/auto-create.

When creating mesh interfaces using the default one-to-one interface method, this text command has the following changes: you can now enter cell zones as part of the setup, which is the equivalent of entering all of the wall and/or interface boundary zones associated with those cell zones; the exclude any specific interface pairs? prompt is removed, as this is now specified through the define/mesh-interfaces/auto-options/set-exclusion-pairs text command; and the automatic pairing of all wall and interface zones? prompt is now included every time you use this text command, even if you have already created a mesh interface.

If you are manually creating a mesh interface and you only enter a single boundary zone for both boundary zone list 1 and boundary zone list 2, a new matching interface? prompt now allows you to enable the matching option, in order to avoid the creation of wall zones where the original zones did not match well.

Sets parameters for increasing or decreasing the number of DPM numerical parcels to meet resolution requirements.

Prompts have been added for setting reference temperatures on the anode and cathode to calculate the reference temperature current density in the Butler-Volmer equation.

A prompt for setting the Bruggeman coefficient has been added.

A prompt for setting the Bruggeman coefficient has been added.

A prompt for setting the Bruggeman coefficient has been added.

A prompt for setting the Bruggeman coefficient has been added.

A prompt for setting the Bruggeman coefficient has been added.

A prompt for setting the Bruggeman coefficient has been added.

New prompts for enabling and setting the physics-based battery aging model have been added.

This text command is removed, as the use of GPGPUs in offload mode is no longer supported. It is recommended that you use the Fluent native GPU Solver instead to accelerate your calculations.

Sets the constant cw1 which controls the size of the RANS layer and the steepness of the RANS/LES switch.

Sets the constant cw2 which controls the size of the RANS layer and the steepness of the RANS/LES switch.

When you define the motion setting, you can now enter motion-definition and specify the name of a motion definition that you have previously created.

When you edit the motion setting, you can now enter motion-definition and specify the name of a motion definition that you have previously created.

The ability to display contours of wall-film-viscosity has been added for simulations that involves the Lagrangian wall film model.

Displays as many contour, vector, pathline, particle track, scene, mesh, LIC, or XY plot objects as specified. Each object is displayed in a new window.

The ability to color particle-tracks by particle-viscosity has been added for simulations that involves the Lagrangian wall film model.

In some instances, the image may appear darker after being saved in AVZ or GLB format than it appears in graphics window. Inverting the normals can correct the issue.

OpenGL2-mesa is now available as a software-based graphics driver.

This text command can now be used on 2D meshes, and is now enabled by default in the 2D version of Fluent.

This text command now uses anisotropic refinement by default for suitable prismatic cells in 2D cases.

This text command is now available for 2D cases, where it is set to puma by default.

Creates one or more copies of one or more cell zones that are offset from the original zones and each other by a single specified delta value. The delta value can be a translational distance or a rotational angle. In the copied zones: while the face zones that end up being on the external boundaries are all converted to walls, any internal face zones (that is, those between cell zones when copying a cluster of adjacent cell zones) will retain their original boundary conditions; any existing cell data is initialized to a constant value; and non-conformal interfaces and dynamic zones are not copied. Apart from these changes, the model settings in the copies are the same as in the original zones. For further details, see Copying Cell Zones in the Fluent User's Guide.

Creates one or more copies of one or more cell zones that are offset from the original zones by various specified values. The values can be translational distances or rotational angles. In the copied zones: while the face zones that end up being on the external boundaries are all converted to walls, any internal face zones (that is, those between cell zones when copying a cluster of adjacent cell zones) will retain their original boundary conditions; any existing cell data is initialized to a constant value; and non-conformal interfaces and dynamic zones are not copied. Apart from these changes, the model settings in the copies are the same as in the original zones. For further details, see Copying Cell Zones in the Fluent User's Guide.

A new Augment list of cells? prompt is added, which allows you to specify whether you want to augment the list of cells; enabling such augmentation can add additional adjacent cells to the deletion list that would otherwise be isolated after deletion, which can help to ensure numerical validity.

This text command is removed, as the use of GPGPUs in offload mode is no longer supported. It is recommended that you use the Fluent native GPU Solver instead to accelerate your calculations.

Interrupts the concurrent update of all design points.

Interrupts the concurrent update of the design point.

Downloads all related output files.

Specify the license level (either Enterprise or Premium).

Choose whether or not to start the Ansys Fluent web interface using the web-server-token from the current session. For more details about the Fluent web interface, see Remotely Accessing Your Simulations Using Ansys Fluent's Web Interface.

Specify the number of cores per node.

Specify a URL for the cluster as well as a user name and password.

Specify the maximum amount of time (hours) needed to execute this job.

Choose whether to keep all output files or to keep specific output files. When you desire to keep specific output files, you can provide their names (separated by commas).

Choose whether or not to use the native GPU-powered Ansys Fluent solver and assign the Number of GPUs per Node accordingly. For more details about the Fluent GPU solver, see Using the Fluent Native GPU Solver.

Specify the token string used to access the Ansys Fluent web interface using the launch-web-server? command. For more details about the Fluent web interface, see Remotely Accessing Your Simulations Using Ansys Fluent's Web Interface.

Useful for allocating resources.

Specify the type of message passing interface (MPI) you require for the parallel computations. The list of MPI types varies depending on the selected release and the selected architecture. There are several options, based on the operating system of the parallel cluster. For more information about the available MPI types, see Table 43.1: Supported Interconnects for the Windows Platform - Table 43.2: Available MPIs for Windows Platforms.

This text command has changed, such that it now enables/disables the showing of the non-overlapping zones associated with one-to-one mesh interfaces under Setup / Mesh Interfaces (under the name of their mesh interface) in the outline view tree as opposed to under their boundary condition types (such as Setup / Boundary Conditions / Wall).

Options for how drawing commands are stored in a video card's memory.

The software adjusts the camera near planes to improve z-buffer precision and to avoid graphical display artifacts like z-fighting. When this option is disabled, the camera near planes is adjusted automatically. Enable this option with surface priority to avoid z-fighting.

Sets the reference temperature used for the sensible enthalpy calculation. You should consider changing this reference temperature when the specific heat is a strong nonlinear function of temperature, and the solution temperature range is far away from the default setting (298.15 K). Setting the enthalpy reference temperature to be within the solution temperature range may reduce roundoff errors when the enthalpy integral is computed and avoid unphysical oscillations of the temperature in the pressure-based solver. This text command is only available with the pressure-based solver, when you are not using the PDF models and/or the inviscid flow model.

This text command menu is removed, as the use of GPGPUs in offload mode is no longer supported. It is recommended that you use the Fluent native GPU Solver instead to accelerate the Algebraic Multigrid (AMG) solver.

Enters the axisymmetric options menu.

Enables/disables the numerical-stabilization of the axis boundary condition.

Enters the menu for interphase interactions.

Enters the turbulence dispersion menu.

Enters the limiting function menu.

Specifies the lower volume fraction limit for the limiting function.

Specifies the upper volume fraction limit for the limiting function.

Enters the transition function menu.

Specifies the lower volume fraction limit for the transition function.

Specifies the upper volume fraction limit for the transition function.

Allows you to undo enhancements introduced in release 2025 R1 of Ansys Fluent:

Commands associated with transient postprocessing.

Create a transient animation by selecting one or more of the existing animation definitions.

Compare the results of 2 data files using a contour plot. A difference plot is also displayed.

Allows you to select an existing graphics object and the software will reset the minimum and maximum values for the given plot, allowing it to have a range that reflects the absolute minimum and maximum values for the entire dataset. This ensures that the colormap will show the same range for an entire transient display or animation.

Allows you to select an object to create a transient display, which is an animation that you can watch as it is played in the graphics window, but no files are saved.

Choose whether or not to perform transient postprocessing on a completed transient run. If you intend to perform additional calculations, you must start a new Fluent session to avoid any issues.

Allows you to select a report file to generate the complete data for the report definitions contained within it based on the selected dataset.

Options and settings related to selecting timesteps for the transient dataset.

Select all of the timesteps for transient postprocessing. These are the data files that the software finds in the working directory according to the latest data file loaded in the session.

Settings related to customizing the selected timesteps.

Allows you to select individual timesteps to be used for transient postprocessing.

Allows you to pick the first and last timestep and specify an increment to select the timesteps in-between.

Selects only the first timestep in the list.

Selects only the last timestep in the list.