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IGNITING COMBUSTION MIXTURE IN reactingFoam HOW msha

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Old   February 4, 2009, 02:24
Default if Non-premixed -> reactingFoa
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Mojtaba Shahmohammadian
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if Non-premixed -> reactingFoam
if premixed or partially premixed ->Xifoam
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Old   February 4, 2009, 02:52
Default hello Mojtaba Shahmohammadian
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pavan
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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..
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Old   February 4, 2009, 03:01
Default have a look at run/tutorials/d
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have a look at run/tutorials/dieselFoam/aachenBomb
and you see how to define boundary
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Old   February 12, 2009, 04:27
Default hi everyone i am solving one
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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..
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Old   September 28, 2009, 10:38
Default why reaction rate is zero?
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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!
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Old   September 28, 2009, 11:07
Default
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Christof Benz
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Hi,

where is the reaction rate calculated in dieselFoam?

Christof
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Old   September 29, 2009, 09:30
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the reaction rate is calculated in ~/OpenFOAM/OpenFOAM-1.5/src/thermophysicalModels/chemistryModel/chemistryModel
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Old   September 29, 2009, 10:12
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Christof Benz
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Mehdi,

how could you get access to the reaction rate?

Christof
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Old   December 23, 2009, 10:48
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Ilja Sabelfeld
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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
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Old   June 15, 2010, 12:22
Default Access to specieThermo data
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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?
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Old   June 15, 2010, 18:32
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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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