COMSOL Multiphysics™

femnlin
TABLE 1-26: VALID PROPERTY/VALUE PAIRS
PROPERTY VALUE DEFAULT DESCRIPTION
Minstep positive scalar see below Minimum damping factor
Ntol positive scalar 1e-6 Relative tolerance
Oldcomp cell array of strings {} Old parameter
components
Out
fem | sol | u | plist sol
Output variables
| stop | solcompdof
| Kc | Lc | Null | Nnp
| ud | uscale |
nullfun |
symmetric | cell
array of these strings
Pinitstep positive real Initial stepsize for
parameter
Plist real vector List of parameter values
for parameter
Pmaxstep positive real Maximum stepsize for
parameter
Pminstep positive real Minimum stepsize for
parameter
Pname string Name of parameter
Porder 0 | 1 1 Predictor order for
parameter stepping
Rstep real scalar > 1 10 Restriction for step size
update
Stopcond
string with
expression
Stop parameter stepping
before expression
becomes negative
In addition, the properties described in the entry femsolver are supported.
The property Augcomp control the augmentation components. If this property is
set to a subset of the solution components, then the solution procedure is split into
two substeps, that are repeated until a convergence criteria is met or until the
maximum number of iterations is reached. The main components, which are the
solution components excluding the augmentation components, are first solved for,
while the augmentation components are held fix. After this, the augmentation
components are solved for while the main components are held fix. In this second
solution step, a linear solution approach is taken. Therefore, with the main
136 | CHAPTER 1: COMMAND REFERENCE