Solver

This section explains how the solver participates in each simulation timestep. It focuses on the numerical role of the solver, the unknowns it resolves, and how convergence is handled between the matrix solve and the broader timestep loop.

The solver operates on the network assembled from assets and nodes. For each solve, it builds the equation system, computes updated hydraulic and thermal state values, and writes those results back to the network entities.

How to use this section

• Start with the conceptual pages below to understand solver workflow and result interpretation.

• Use Solver Behavior for the detailed explanation of the equation system the solver solves each timestep and how that solve changes the physical model.

• Use the Solver Reference page (linked below) for class-level information about solver internals.

• Use the Physics section for asset-specific constitutive relations and the Network section for connectivity concepts.

Conceptual pages

• Solver workflow
• Solver unknowns and equations
• Solver convergence
• Solver Behavior

Implementation reference

For solver classes, matrix assembly, and asset-level solver implementation details, use Solver Reference.

Related Documentation

• For network representation and connectivity, see Network layer.

• For interpretation of physical state variables and governing relations, see Physics.

• For package-level execution context, see Introduction.