COMSOL Multiphysics™

TABLE 2-4: ASSEMBLY AND EXTENDED MESH ERROR MESSAGES
ERROR NUMBER ERROR MESSAGE EXPLANATION
6199 Attempt to evaluate real square root of
negative number
The model contains a sqrt (square root)
function that takes the square root of a
negative number. Either make sure that the
square-root argument is nonnegative or
select the Use complex functions with real
input check box on the Advanced tab in the
Solver Parameters dialog box.
6204 Undefined function call An expression contains an undefined
function name. Check that the function
name is correct and that the function is in
COMSOL Multiphysics’ or MATLAB’s path.
6206 Internal evaluation error: unexpected NaN
encountered
Not-A-Number (NaN) appears
unexpectedly. A possible cause is
improperly defined coupling variables. As a
first step, check that the definitions of the
source and destination domains of any
coupling variables or periodic boundary
conditions are correct.
6245 Unsupported integration order Integration order is too high. For triangular
elements, the order can be up to 10, and for
tetrahedral elements, the order can be up
to 8. Find more information in the section
“Numerical Quadrature” on page 644 in the
COMSOL Multiphysics User’s Guide.
ERROR MESSAGES | 415