Solver Study Steps for Parameter Estimation
Parameter Estimation calculations are enabled in the Study branch, by right-clicking the study node and selecting the Optimization study step from the context menu. Moving to the main Study node and clicking Compute starts the parameter estimation.
The Optimization Solver node is a subnode to the Solver node. In the settings window the Optimization Solver section offers the several methods for solving the optimization problem.
Figure 2-11: The settings for the Optimization Solver are accessed in the Study tree.
 www.comsol.com/optimization-module