To make the most of your ANSYS license and ensure accurate results:
The error indicates that the (mesh) you have created—specifically the total number of nodes and elements—has surpassed the capacity allowed by your current software license.
The “numerical problem size limits verified” error isn’t a bug—it’s a . Understanding it saves hours of debugging.
Sometimes the error appears even when you are technically under the limit. This is often due to :
Understanding the "Ansys Product License Numerical Problem Size Limits Verified" Message To make the most of your ANSYS license
When starting a solve, ANSYS will output:
“Maximum problem size for this license is 512000 nodes.”
Ansys applies specific caps to non-commercial licenses to regulate how much computational power can be used. If your model exceeds these predetermined thresholds, the built-in license checker triggers a hard stop.
The "Ansys: Your product license has numerical problem size limits verified" message can occur for several reasons: Sometimes the error appears even when you are
license, which has hard-coded limits on the number of nodes or elements your model can contain
Includes contact and surface elements added during execution. (Ansys Fluent / CFX) 512,000 to 1,048,576 cells Dependent on the installation version year. LS-DYNA Student 128,000 nodes/elements Fixed limit for explicit dynamics solver. Hidden Triggers Behind the Error
If you are at a university, check if your lab has a "Research" license. These have much higher limits (often in the millions) or are completely "Unlimited."
Ansys provides several academic and limited tiers, each enforcing strict structural and fluid dynamics cell constraints. When your mesh generation exceeds these specific limits, the Ansys License Manager instructs the solver to fail immediately upon hitting initialization. Free Student Tier Limits The "Ansys: Your product license has numerical problem
The "Ansys: Your product license has numerical problem size limits verified" message can be a concern for engineers and researchers working with large-scale simulations. By understanding the causes of this message and taking steps to address it, you can ensure smooth and efficient simulations. By following best practices, optimizing your model, and upgrading your license or hardware as needed, you can minimize the occurrence of this message and focus on delivering high-quality results. If you're experiencing this issue, we hope this article has provided valuable insights and guidance to help you move forward.
This message indicates that the model you are trying to solve exceeds the allowed number of nodes or elements stipulated by your license type, such as Academic, Student, or certain entry-level commercial packages.
You are attempting to run a simulation (likely a "pre-post" or "solver" task) that exceeds the size limit of your current license tier. Common Cause: Using a "Pre-Post" license to solve a large model, or having an older license file that doesn't recognize your current Ansys version limits. Immediate Fix: Check if you are using the correct license module (e.g., switching from "Pre-Post" to a full "Solver" license) or update your license file.
Even if your displayed mesh count is below the limit, the error can trigger due to: Your product license has numerical problem size limits…..