SimcenterKnowledge

Command reference help topics

Flow Convergence - Viscosity dialog box (Flow/ESC/Multiphysics)

Modeling Object
Name Sets a name for the modeling object.
Label Sets a unique numeric identifier for the modeling object.
Properties
Description Sets a description for the modeling object.Click Description to set the description in an editor box.
Stopping Criteria
Criteria Specifies the stopping criteria that the flow solver uses to determine if the viscosity converges over the selected region.Absolute DifferenceStops the analysis when the absolute difference of the average viscosity, between two consecutive iterations, is less than the value specified in the Viscosity box.Relative DifferenceStops the analysis when the relative difference of the average viscosity, between two consecutive iterations, is less than the value specified in the Viscosity (%) box.Upper LimitStops the analysis when the computed average viscosity is greater than the value specified in the Viscosity box.Lower LimitStops the analysis when the computed average viscosity is less than the value specified in the Viscosity box.
Averaging Method
Method Specifies the averaging method that the flow solver uses to compute a single value for the viscosity over the selected region. The flow solver uses this value to determine if the analysis is converged.RMSComputes the root mean square (RMS) of the viscosity value over the selected region.Maximum ValueRetrieves the maximum viscosity value over the selected region.Minimum ValueRetrieves the minimum viscosity value over the selected region.Algebraic Average ValueComputes the algebraic average viscosity value over the selected region.Volumetric Average ValueComputes the volumetric average viscosity value over the selected region.
Magnitude
Viscosity Sets the target viscosity convergence value that the flow solver uses to stop the analysis when the computed viscosity reaches the specified target value.Note: When you choose Relative Difference as the stopping criteria, you set the target viscosity as a percentage value.
How do I

Create a flow convergence over the fluid domain subset

Learn more

Flow Convergence

Look up more details

Flow convergence computations

Quick links

Command reference

Pre/Post video examples

Bulk Entry Descriptions

Simcenter 3D tutorials

Browse Simcenter 3D help by product area

Flow Convergence - Viscosity dialog box (Flow/ESC/Multiphysics), Simcenter 3D 2021.1 Series

© 2020 Siemens

window.mainLanguage="en_US"

window.delivId=""

window.projectId=""

MathJax.Hub.Config({ TeX: { extensions: ["autoload-all.js"] }, tex2jax: { displayMath: [ ] }, "SVG": { scale: 125 } });

Source: https://docs.sw.siemens.com/en-US/doc/289054037/PL20200601120302950.advanced/xid1760500 · retrieved 2026-07-17