If your part is symmetric, don't model the whole thing. Using allows you to model half, a quarter, or an eighth of the geometry, effectively doubling or quadrupling your allowable mesh density. Simplify Geometry
When you attempt to solve a model, the software calculates the total size of your mesh. If that number exceeds the hardcoded limit embedded in your license file, the solver blocks the operation and displays this message. Why Are You Seeing This Message? There are three primary reasons this limit is triggered: 1. You Are Using an Academic Student Edition
If you recently renewed your license or installed a new version of Ansys, the error might be due to an outdated license file ( license.lic or ansyslmd.lic ).
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. If your part is symmetric, don't model the whole thing
In simple terms, refers to the number of degrees of freedom (DOFs) in your simulation.
Here is a blog post guide to understanding, diagnosing, and fixing this limitation.
Understanding the "Your Product License Has Numerical Problem Size Limits" Error in ANSYS If that number exceeds the hardcoded limit embedded
Why You Exceeded the Limit (Even When the Mesh Looked Small)
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.
Encountering the error message means your simulation has exceeded the mesh or node restrictions dictated by your specific Ansys license tier. When this happens, Ansys halts the solver, preventing you from running the simulation until the problem size is reduced or the license is upgraded. Why This Error Occurs You Are Using an Academic Student Edition If
Your license file contains a parameter called ProblemSizeLimit or a feature-specific token limit. If your mesh exceeds that number, Ansys refuses to solve.
The structural physics environment (Ansys Mechanical) and fluid physics environment (Ansys Fluent) enforce independent restrictions: Simulation Environment Current Student Version Limits Historical Student Limits 128,000 Nodes / Elements 32,000 Nodes / Elements Ansys Fluent (CFD) 512,000 Cells / Nodes 512,000 Cells / Nodes Ansys Electronics Desktop 512,000 Elements 512,000 Elements The Hidden Trap: Total Count vs. Node ID Numbering Limitations to Student License? - Ansys Customer Center
If you see "Your product license has numerical problem size limits" :
If you tell me which forum/platform you’ll post on (LinkedIn, Reddit, support ticket) and your ANSYS version + solver + approximate model size, I can tailor tone and add tags/subject line.
Typically limited to 32,000 nodes/elements .
