CFD Online Logo CFD Online URL
Home > Forums > Software User Forums > ANSYS > FLUENT > Fluent Multiphase

Eulerian Evaporation-Condensation with Species Transport receiving Segmentation Fault

Register Blogs Members List Search Today's Posts Mark Forums Read

LinkBack Thread Tools Search this Thread Display Modes
Old   July 20, 2018, 16:56
Post Eulerian Evaporation-Condensation with Species Transport receiving Segmentation Fault
New Member
Andrew Taylor
Join Date: Apr 2018
Posts: 1
Rep Power: 0
Aeronautilus is on a distinguished road
I'm working on simulating the catalytic combustion of a monopropellant in a circular tube (modeled as axisymmetric), in which the propellant enters the tube as a liquid, and then vaporizes/decomposes into gaseous products at the heated wall (via a one-step Arrhenius Reaction), and then accelerates as it moves down the tube. My current settings are:
- ANSYS Fluent 18.1 Parallel
- 2D, Pressure-Based, Axisymmetric, Steady
- Laminar
- Implicit Eulerian Evaporation-Condensation, Implicit, Thermal Phase Change
- Species Transport (Laminar Finite-Rate/No TCI), Wall Surface Reactions
- Primary Phase: Constant Density Liquid
- Secondary Phase: Ideal Gas Mixture
- Phase Interactions: Symmetric Drag Law, Two-Resistance heat Transfer, Evaporation-Condensation Mass Transfer, ia-symmetric Interfacial Area
- Boundary Conditions: Mass-Flow-Inlet, Const. Temp Wall, Pressure-outlet, Axis

I am able to converge a reasonable initial solution of evaporation only with reactions off, but when I turn on reactions, after 1-2 iterations I receive the error

Node 0: Process 21252: Received signal SIGSEGV
MPI Application rank 0 exited before MPI_Finalize() with status 2
The f1 process could not be started.

Almost all the other cases I've found of this error involve a UDF calling a variable that can't be accessed. However, I do not have a UDF set up for this simulation, and thus have been unable to determine what exactly is being called that would result in this error. My best guess is that it is related to the combination of reactions and evaporation, as I can get the reactions and the evaporation to work separately, but I did not find anything in the User/Theory Guide that says these models can't be combined. I've tried running in serial, varying the URFs, and running the simulation as transient, and none have helped with convergence. When transient, the error obtained after one iteration is

Error: received a fatal signal (Segmentation fault).
Error Object: #f

Any assistance or directions to a solution would be greatly appreciated.
Aeronautilus is offline   Reply With Quote


eulerian multiphase flow, evaporation-condensation, segmentation fault, species transport

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
UDF for Sorption in Species Transport through Porous Medium Kosch Fluent UDF and Scheme Programming 6 October 21, 2020 17:46
Eulerian Multiphase Interfacial Species Mass Transfer thomasduffy001_ Fluent Multiphase 1 October 3, 2017 07:21
Segmentation fault when running dieselFoam or dieselEngineFoam in parallel francesco OpenFOAM Bugs 4 May 2, 2017 21:59
A question about species box of species transport model tjushang FLUENT 2 June 25, 2014 07:56
user defined scalar vs species transport gvj_mech FLUENT 0 March 27, 2014 14:33

All times are GMT -4. The time now is 16:59.