Solution Operation Nodes and Solvers

Table 20-6: Solution Operation Nodes.
Icon	Name	Description
	AWE Solver	Solve a parametric problem with asymptotic waveform evaluation.
	Dependent Variables	Handles the dependent variables solved for (initial values, scaling) and dependent variables not solved for (prescribed values).
	Eigenvalue Solver	Solve linear or linearized eigenvalue problems (also called eigenfrequency problems). Also see The Eigenvalue Solver Algorithms.
	FFT Solver	Use a forward FFT to transform a time-dependent solution to the frequency domain or an inverse NFT/FFT to transform a frequency-domain solution to the time domain.
	Modal Reduction	To solve either parameter stepping (also called frequency response) or time stepping (also called transient response) problems using a reduced model. This approach also produces a reduced-order model or reduced matrices. Also see The Modal Solver Algorithm.
	Modal Solver	To solve either parameter stepping (also called frequency response) or time stepping (also called transient response) problems using a reduced model and a modal approach. Also see The Modal Solver Algorithm.
	Optimization Solver	Solve PDE-constrained optimization problems. Requires the Optimization Module.
	Plug Flow Solver	Solve a plug flow reactor model (requires the Chemical Reaction Engineering Module).
	Stationary Solver	Solve linear and nonlinear stationary problems (also called static or steady-state problems). Also see About the Stationary Solver.
	Time-Dependent Solver	Solve time-dependent problems (also called dynamic or unsteady problems) using the implicit BDF or generalized-α methods or one of the available explicit Runge–Kutta and Adams–Bashforth 3 type of time-stepping methods. Also see About the Time-Dependent Solver.
	Time Discrete Solver	Solve time-dependent problems (dynamic or unsteady problems) that have already been discretized in time using, for example, the prev operator or the bdf operator.
	References for the Solution Operation Nodes and Solvers	Solve time-dependent problems (also called dynamic or unsteady problems) using the family of Runge–Kutta explicit time-stepping schemes or the Adams-Bashforth 3 solver. Also see. The Time-Explicit Algorithms