November 2025 critical fixes

November 2025 fixes were published on 18 November 2025. All critical fixes listed here were fixed for versions 2506.6 and 2412.14 unless otherwise noted.

Bug 109912: The Monte Carlo method computes incorrect view factors for enclosure radiation requests when the selection includes free edges of plane stress elements

The Monte Carlo method has been improved to better evaluate the view factor to the free edge of plane stress elements. This correction may cause differences in computed temperatures for models affected by the issue.

Bug 116405: A hang occurs in the VUFAC module for thermal models that contain several partial orbits with matching start and end orbit times when parallel view factors are enabled

This issue affected thermal models containing multiple partial orbits with identical start and end orbit times. During parallel execution of the VUFAC module, the solver could hang after completing the first orbital request. This problem has been resolved.

Bug 116499: A void region applied to an internal line with the 'Add Thicknesses' setting is erroneously processed as 'Subtract Thicknesses' when the void region ID exceeds 99

When applying the Add Thicknesses option to void regions defined on internal edges, the setting was incorrectly interpreted as Subtract Thicknesses when the specified void region ID exceeded 99. This behavior has been corrected.

Bug 116785: An incorrect convective area is computed for regions where both a convective boundary condition and a simple radiation to environment constraint are applied simultaneously

An issue causing incorrect convective area computation when both a convective boundary condition and a simple radiation to environment constraint were applied to the same region has been resolved. The solver now properly initializes internal data and handles overlapping areas to ensure accurate and consistent heat transfer results.

Bug 116921: Incorrect non-zero elemental convective thickness results are produced by the serial post-processing library (RSLTPOST) when a thermal void load is applied to elements

When a thermal void load was applied to a selection of elements, the RSLTPOST module incorrectly produced non-zero elemental convective thickness values, even though the corresponding nodal results were zero. This issue has been resolved, and the solver now correctly reports both elemental and nodal convective thickness values as zero for thermal void loads.