October 2024 critical fixes

October 2024 fixes were published on 23 October 2024.

Bug 96228: Co-simulation thermal output values for Heat Flux and Heat Flow Rate may be reported as zero due to incorrect indexing of variables

Fixed versions: 2406.7

In co-simulation models, thermal output values for heat flux and heat flow rate may be wrong due to incorrect indexing of variables. This issue results in unexpected zero values being reported in the co-simulation log and displayed in the Heat Flux (Output) and Heat Flow Rate (Output) co-simulation graphs for one or more variables. This has been fixed.

Bug 96414: Incorrect mixing temperature for an output duct when input ducts are defined by a bivariate fluid material with specific heat that varies with temperature and pressure

Fixed versions: 2406.5, 2312.9, 2306.14

Prior to the fix, the thermal solver was missing the implementation for computing the mixing temperature at duct junction nodes using a bivariate table for specific heat capacity, C_p(T, P). This omission led to inaccuracies in the nodal 1D flow temperatures for ducts, as the calculations were incorrectly based on C_p(T) instead of the intended C_p(T, P). After the fix, the mixing temperature is now correctly computed from the bivariate table for specific heat capacity, considering both temperature and pressure dependencies.

Bug 97836: Simcenter 3D Multiphysics models may encounter a PMPI_Init error when run in serial on Linux

Fixed versions: 2406.6, 2312.9, 2306.15

Simcenter 3D Multiphysics models may encounter a PMPI_Init error when run in serial on Linux. To address this issue, a default MPI option (export INTELMPIENABLED=1) has been disabled in the pcmpi_ldpath.com script located in the %UGII_TMG_DIR%/com directory.

Bug 98815: Incorrect reporting of area values in .bcdata summary file when thermal coupling and gap radiation boundary conditions are applied to the same edge selection

Fixed versions: 2406.7, 2312.10, 2306.16

When thermal coupling and gap radiation boundary conditions are applied to the same edge selection, the <simulation name>-<solution name>.bcdata summary file reports incorrect Area Conv. and Area Prim. values. The thermal solver erroneously treated gap radiation as a convective boundary condition when calculating the convective area for the summary file. This issue is purely a reporting error and does not affect temperature computations. This has been fixed.