# IGNITING COMBUSTION MIXTURE IN reactingFoam HOW msha

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 February 4, 2009, 02:24 if Non-premixed -> reactingFoa #21 Member   Mojtaba Shahmohammadian Join Date: Mar 2009 Posts: 73 Rep Power: 10 if Non-premixed -> reactingFoam if premixed or partially premixed ->Xifoam

 February 4, 2009, 02:52 hello Mojtaba Shahmohammadian #22 New Member   pavan Join Date: Mar 2009 Location: BANGALORE, KARNATAKA, INDIA Posts: 7 Rep Power: 10 hello Mojtaba Shahmohammadian sir i am solving this problem in XIfoam only. my verticies are convertToMeters 1; vertices ( (0 0 0) (0 0.5 0) (14 0 0) (14 0.5 0) (180 0 0) (180 0.5 0) (0 22.5 0) (180 22.5 0) (0 0 1) (0 0.5 1) (14 0 1) (14 0.5 1) (180 0 1) (180 0.5 1) (0 22.5 1) (180 22.5 1) ); blocks ( hex (0 2 3 1 8 10 11 9) (14 1 1) simpleGrading (1 1 1) hex (2 4 5 3 10 12 13 11) (166 1 1) simpleGrading (1 1 1) hex (1 5 7 6 9 13 15 14) (180 22 1) simpleGrading (1 1 1) ); edges ( ); patches ( patch inlet1 ( (1 9 14 6) ) patch inlet2 ( (0 8 9 1) ) patch outlet ( (5 13 15 7) ) wall topwall ( (6 14 15 7) (1 9 11 3) ) wall bottomwall ( (0 8 10 2) (2 10 12 4) ) empty frontandback ( (8 9 11 10) (0 1 3 2) (9 14 15 13) (1 6 7 5) (10 11 13 12) (2 3 5 4) ) ); mergePatchPairs ( ); // ************************************************** *********************** // i need to define species seperately for air and fuel inlets, where i have to define species sir..

 February 4, 2009, 03:01 have a look at run/tutorials/d #23 Member   Mojtaba Shahmohammadian Join Date: Mar 2009 Posts: 73 Rep Power: 10 have a look at run/tutorials/dieselFoam/aachenBomb and you see how to define boundary

 February 12, 2009, 04:27 hi everyone i am solving one #24 New Member   pavan Join Date: Mar 2009 Location: BANGALORE, KARNATAKA, INDIA Posts: 7 Rep Power: 10 hi everyone i am solving one methane combustion problem, i am facing difficulty please any one can send one combustion solved problem through link for reference..

 September 28, 2009, 10:38 why reaction rate is zero? #25 New Member   mehdi Join Date: Jun 2009 Posts: 7 Rep Power: 10 Dear members, I have a difficulty with reactingFoam. When I calculate reactingFoam tutorial or dieselenginfoam tutorial, the reaction rate is always Zero. I have switched on the chemistry and combustion as well as using a high temperature ignition region, however, regardless of the temperature and Arrhenius parameters that I used in chem.inp, the reaction rate is always zero. I should mentioned that other transport properties and equation for species (YEq) is properly solved. The problem is just in the calculation of reaction rate. Any help!

 September 28, 2009, 11:07 #26 Member   Christof Benz Join Date: Mar 2009 Posts: 52 Rep Power: 10 Hi, where is the reaction rate calculated in dieselFoam? Christof

 September 29, 2009, 09:30 #27 New Member   mehdi Join Date: Jun 2009 Posts: 7 Rep Power: 10 the reaction rate is calculated in ~/OpenFOAM/OpenFOAM-1.5/src/thermophysicalModels/chemistryModel/chemistryModel

 September 29, 2009, 10:12 #28 Member   Christof Benz Join Date: Mar 2009 Posts: 52 Rep Power: 10 Mehdi, how could you get access to the reaction rate? Christof

 December 23, 2009, 10:48 #29 New Member   Ilja Sabelfeld Join Date: Nov 2009 Posts: 22 Rep Power: 10 hello niklas, can you tell me how to compile the modified reactingFoam solver with wmake? i typed "wmake" in the terminal and got this: /applications/solvers/combustion/reactingFoam> wmake linuxGccDPOpt/options:7: *** missing separator. Schluss. wmake error: file 'Make/linuxGccDPOpt/objectFiles' could not be created

 June 15, 2010, 12:22 Access to specieThermo data #30 New Member   mehdi Join Date: Jun 2009 Posts: 7 Rep Power: 10 Dear All, Does any of you know to access to the thermodynamic propertie of species such as hi(T) where hi is enthalpy of ith specie and Ti is temprature of cell? In openFoam-1.5 you can write hi = chemistry.specieThermo()[i].h(Ti); and it works. See disealengienfoam solver in openfoam-1.5. However, in OpenFoam-1.6 if you write the same you get psichemistrymodel has no memebr specieThermo. How can we use specieThermo in OpenFoam-1.6?

 June 15, 2010, 18:32 #31 Senior Member     Marco A. Turcios Join Date: Mar 2009 Location: Vancouver, BC, Canada Posts: 716 Rep Power: 21 Its related to how the thermo is now a member of the chemistry (or vice-versa, it's been a while since I took OO programming). I am trying to figure it out to solve the problem stated in a thread I started recently.

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