Additionally, the overall element count can grow considerably larger than the original mesh. This helps to arrive at the mesh independent solution more efficiently.īecause Mesh Adaptation runs several cycles to arrive at the final mesh, the complete analysis can take longer to run than a scenario run without Adaptation. You should define an initial mesh that follows standard mesh best practices. Note: Mesh Adaptation does not provide the mesh independence report for the first (nominal) simulation. If your adaptation cycles only run for a small number of iterations, this failing to reach convergence, the Mesh Independence indicators will not be accurate.

Higher values indicate less sensitivity to the mesh, which means your solution is approaching mesh independence.įor best results, you should ensure that each adaptation cycle runs to convergence (or as close as possible). These values indicate how converged your simulation is for each quantity. Mesh independence: Pressure: 85% Velocity 98% Temperature 97% At the conclusion of each step, Autodesk® CFD reports the mesh independence status in the Output bar in a message similar this: During each adaptation step, Autodesk® CFD evaluates the pressure, velocity, and temperature fields to determine how close your solution is to mesh independence. Mesh independence is the coarsest mesh that produces results that do not change after the mesh is refined. When using Mesh Adaptation, it is important to know when the solution has achieved mesh independence. Transient simulations (including Motion and Rotating).Mesh Adaptation does not support the following simulation types or settings: The result is an intelligently refined mesh that is tuned for the flow and temperature results fields. The process repeats for each Adaptation cycle.The mesh is changed (often refined) based on velocity, pressure, and temperature (if available).A baseline scenario is run to completion.When Mesh Adaptation is enabled, the following occurs: The mesh is finer for high gradient regions, and coarser elsewhere. The result is a mesh that is optimized for the particular simulation. Each time the results in the previous cycle are used to improve the mesh in the next cycle. Mesh Adaptation uses solution results to progressively improve the mesh definition. These trends can be used to identify where the elements should be concentrated to improve solution accuracy. The results on the coarse mesh may not be highly accurate, but they do indicate flow trends. For example, the flow on a simple model with a uniform mesh can contain significant gradients.

Automatic Mesh Sizing defines a mesh that is optimized for the model and accurately represents every detail of the geometry.Ī good representation of the geometry is only one requirement for a high fidelity solution.

Since its introduction, Automatic Mesh Sizing has greatly simplified the modeling process.

Mesh enabler for autodesk inventor