The CFX 10.0 solver fails with the following error message in the solver output file:
Error detected by routine PEEKI
CDANAM = /FLOW/ALGORITHM/ZN1 /SYSTEM/VARIABLES/SPHEATP_FL1 /IVAR
CRESLT = NONE
This PEEKI error message occurs because you have not specified a specific heat capacity value for your material(s). Even if your run is isothermal, the specific heat capacity is still required by the solver to calculate the thermal energy entering and leaving the domain.
If you specify a specific heat capacity for your materials, you should find that the error no longer occurs