[Aleksei]

Good day!
Help me to solve the following problem.
Solve the simulation of heat transfer between solid regions, include a set of closed gas regions are transparent to radiation. In two of these regions is modeled turbulent flow in the other - laminar flow with zero initialisation vector components of the speed and pressure. Gas regions with flow are in separate domains, and all gas regoins without flow are combined into a single domain and are associated with solid domains by GGI interfaces. In gas domains modeled radiation DTM (Surface to Surface). Physical model of fluid domains - ideal gas. Simulation is considered in parallel run with the pre-prepared par-file with EP "rad data in par file = true". Up to 40 partitions the borders of gas domains appear unphysical areas with the apparent high values of the wall radiative heat flux, leading to non-physical temperature rise in these areas up to 15000K. Different types of partitioning (ORCB, RCB, DRCB, MetisRec etc) to a positive result does not lead. Parallel run is considered on a cluster running OS Linux. Solving this simulation without radiation such nonphysical effects are absent.
I would be grateful for any help with solving this problem. Thank you.