Command reference help topics > Solver Parameters dialog box (Thermal/Flow/SST/ESC)

Solver Parameters dialog box — Coupled Solver

Option	Description
Communication Frequency	Sets the communication frequency between the thermal and flow solvers for steady-state solutions. The specified value is the number of flow iterations which must take place before the thermal solution is performed.
Convergence Control
Maximum Temperature Change	Sets the value for the maximum temperature change of any convecting element between two consecutive iterations. When the temperature change of all convecting elements between two consecutive iterations is below the specified value, the coupled solution is converged.
Global Heat Imbalance Fraction	Sets the value for the normalized heat residual in convective heat exchange between successive coupled iterations. When this heat imbalance reaches a value below the specified limit, the coupled solution is converged.

Adjusting solver parameters

Setting coupled solver parameters

Solver Parameters dialog box —Thermal Solver

Solver Parameters dialog box —3D Flow Solver

Solver Parameters dialog box —Radiation Parameters

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Thermal/Flow, Electronic Systems Cooling, and Space Systems Thermal

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Solver Parameters dialog box — Coupled Solver, Simcenter 3D 2021.1 Series

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