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June 13, 2017, 19:39 |
Partially premixed combustion, chemkin
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#1 |
Member
Join Date: Mar 2012
Location: USA
Posts: 33
Rep Power: 14 |
Hi everyone
I try to make a partially premixed combustion in a swirl flow for a compressible kerosene-air mixture. In fluent under "species model" I chose Partially Premixed Combustion with C Equation and compressiblity effects. For the chemistry, I want to use the "flamelet Generated Manifold". Hence I have to give a Chemkin mechanism. I use the default thermodyanmic data "thermo.db". I wrote a file for the chemkin mechanism where there is just the main reaction. -_-_-_-_-_-_-_-_-_-_-_-_- Chemkin file: ELEMENTS O H C N END SPECIES O2 H2O CO2 C12H23 N2 END REACTIONS C12H23 + 17.75O2 = 12CO2 + 11.5H2O 2.587e+09 0.0 1.257e+05 END -_-_-_-_-_-_-_-_-_-_-_-_- After I imported it, I go to the flamelet tab and try to calculate flamelets but I have an error message: Error: received a fatal signal (Segmentation fault). I do not understand why. Also, the flamelet mixture is incompressible and I cannot change that. Is anyone can help me? Thanks. Last edited by tsi07; June 14, 2017 at 10:54. |
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June 14, 2017, 13:58 |
Error message when I calculate flamelets
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#2 |
Member
Join Date: Mar 2012
Location: USA
Posts: 33
Rep Power: 14 |
OK, I changed my Chemkin mechanism (.inp file) and I do not have error when I upload it in the chemistry tab under "Import CHEMKIN Mechanism...".
But after I set the "Boundary" tab and go to "Flamelet" I obtain this error message when I hit the button "Calculate Flamelets" : -_-_-_-_-_-_-_-_-_-_-_-_- Generating flamelet 2 at mixture fraction 0.0132144 and scalar dissipation 201.586 /s Time (s) Temp (K) Residual Error: CVODE unsuccessful: flag = -4 Error: CVODE unsuccessful: flag = -4\n Error Object: #f -_-_-_-_-_-_-_-_-_-_-_-_- Is anyone knows what does that mean? |
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March 22, 2018, 23:10 |
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#3 |
Senior Member
Weiqiang Liu
Join Date: Feb 2018
Posts: 278
Rep Power: 9 |
Hi
I met the same error 'received a fatal signal (segmentation fault )'. have you solved this problem. if you do, please let me know how you did it. thanks |
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Tags |
chemkin mechanism, compressible flow, flamelet, partially combustion |
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