[a.maroofi]

I simulate direct injection engine with heptane fuel. Abnormally during injection I see this message :

umber tracked = 54497, escaped = 0, aborted = 0, trapped = 0, evaporated = 1266, incomplete = 0, incomplete_parallel = 0, coalesced = 2692, shed = 1370, splashed = 1492

Deleted 21 particles in injection injection-3 with total mass 5.238089e-15 kg

Deleted 8 particles in injection injection-2 with total mass 2.620605e-15 kg

Deleted 1 particles in injection injection-3 with total mass 2.598588e-16 kg
iter continuity x-velocity y-velocity z-velocity energy k epsilon c8h18 o2 time/iter
5125 2.8582e-03 1.0445e-05 9.9964e-06 2.3042e-05 8.3657e-08 3.4721e-04 1.9184e-06 9.3095e-04 3.8301e-07 0:04:11 60

Error at Node 14: Invalid cp (0.000000e+00 J/kgK) for n-octane-air at temperature 1.#QNAN0 K


Error at Node 15: Invalid cp (0.000000e+00 J/kgK) for n-octane-air at temperature 1.#QNAN0 K


Error at Node 0: Invalid cp (0.000000e+00 J/kgK) for n-octane-air at temperature 1.#QNAN0 K


Error at Node 1: Invalid cp (0.000000e+00 J/kgK) for oxygen at temperature 1.#QNAN0 K


Error at Node 2: Invalid cp (0.000000e+00 J/kgK) for n-octane-air at temperature 1.#QNAN0 K


Error at Node 13: Invalid cp (0.000000e+00 J/kgK) for n-octane-air at temperature 1.#QNAN0 K

MPI Application rank 0 exited before MPI_Finalize() with status 2
************************************************** **************************
* hwloc has encountered what looks like an error from the operating system.
*
* Socket (cpuset 0xfff000ff) intersects with Socket (cpuset 0x000fffff) without inclusion!
* Error occurred in topology.c line 940
*
* Please report this error message to the hwloc user's mailing list,
* along with any relevant topology information from your platform.
************************************************** **************************
The fl process could not be started.

I realy don't know what happend?

[muhamed badawi]

i have faced the same error, did you solve it ?

[AlexanderZ]

from log we may see, the problem is related to temperature.
Check your model setup

[RKM]

I am using air-hydrogen mixture for combustion in Mach 2. I used K-e and species transport model with 10 species and 21 reaction in fluent. I am getting invalid Cp after 5000 iteration if I am using mixing law for Cp and after 4000 iteration if chemkin law. Please help me to troubleshoot this problem. The picture is attached.