Adjusting solver parameters

Use Solver Parameters to improve convergence, to speed calculation time, or to adjust the solver for unusual modeling situations. The Solver Parameters dialog box displays the version number of the thermal and flow solver (TMG).

Nearly every analysis will run using default solver options. Modify these options when you need to correct convergence problems. In particular, if you experience convergence problems with a steady state flow analysis, you may need to adjust the Steady State Relaxation Time Step on the 3D Flow page.

Use the options on different pages to adjust the solver depending on the Analysis Type of the solution:

• ThermalUses the Thermal Solver and Radiation Parameters pages.

• FlowUses the 3D Flow Solver page.

• Coupled Thermal/FlowUses all of the above, plus the Coupled Solver page.

Where do I find it?

To define Solver Parameters, do one of the following in a simulation:

• In the Simulation Navigator, right-click the Solution and choose →Edit Solver Parameters.

• Choose Home tab→Solution group→Solve . On the Solve dialog box, click Edit Solver Parameters.

How do I

How to choose values for Maximum Normalized Velocity Change and Maximum Normalized Pressure Change

Learn more

Setting thermal solver parameters

Setting flow solver parameters

Setting coupled solver parameters

Understanding radiation parameters

Setting relaxation factors for the flow solver

Defining a time step for a flow analysis

Understanding the freeze flow field options

Quick links

Command reference

Pre/Post video examples

Bulk Entry Descriptions

Simcenter 3D tutorials

Browse Simcenter 3D help by product area

Simcenter 3D Thermal/Flow, Electronic Systems Cooling, and Space Systems Thermal boundary conditions

Adjusting solver parameters, 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 } });