Limited to basic geometry and coarse fidelity levels.
The most reliable long-term solution is upgrading to appropriate license tier:
Can vary, but may also have limits compared to commercial versions. 2. Why Did I Exceed the Limit?
(e.g., Enterprise trial or cloud credits). Limited to basic geometry and coarse fidelity levels
The limits depend heavily on which version of Ansys you are running. As of the most recent releases, the standard limits for versions are: Structural (Ansys Mechanical): 128,000 nodes/elements. Fluid (Ansys Fluent / CFX): 512,000 cells/nodes.
– solve subcomponents separately.
The "numerical problem size" refers to the total number of nodes, elements, or bodies in your FEA (Finite Element Analysis) or CFD (Computational Fluid Dynamics) model. When a simulation exceeds these predefined limits, the solver stops the analysis to ensure compliance with the license agreement. Key Takeaways of the Error: Why Did I Exceed the Limit
You likely received this error because your simulation is highly detailed. Common causes include:
This error means your simulation model has exceeded the maximum geometric size allowed by your specific Ansys license tier. Ansys restricts the complexity of models by measuring the total number of mesh elements and nodes. When your mesh density surpasses these hard-coded boundaries, the solver automatically blocks the simulation from running. Mesh and Node Limits by Ansys License Tier
If you are a simulation engineer, you have likely encountered the dreaded pop-up or output message while solving a model in Ansys Fluent, Mechanical, or HFSS: “Your product license has numerical problem size limits verified” or a variation such as “License limits restrict the maximum problem size (number of nodes/cells).” As of the most recent releases, the standard
Contact your Ansys reseller to add a “Max Problem Size Unlimited” add-on or upgrade your license from Professional to Enterprise. For temporary needs, consider elastic licensing (ELU) to rent high-tier tokens for 24 hours.
Troubleshooting: "Your Product License Has Numerical Problem Size Limits Verified"
Ansys Academic and Student versions have built-in constraints to ensure the software is used for educational purposes rather than heavy industrial work. Ansys Student (Introductory): Typically limited to 32,000 nodes/elements for Structural (Mechanical) simulations and 512,000 cells/nodes for Fluid Dynamics (Fluent). Newer versions may allow up to for structural or nearly for CFD, but these vary by release. University Licenses: Limits vary by tier, such as for Intermediate, for Advanced, and for Research licenses.
Split the geometry in or Discovery (e.g., into a half or quarter model).
If you are confident you have the correct license type, verify that your model hasn't accidentally grown beyond the licensed limit.