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Old   August 31, 2005, 13:05
Default In the combustion solvers, the
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Bei
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In the combustion solvers, the enthalpy equation doesn't include chemical reaction source term. For instance, in reactingFoam, chemistry.solve is called to get the species source term, but based on the chemistryModel::solve(), the temperature/enthalpy of mixture are calculated and discarded when returning from the subroutine. It must be my misunderstanding. Please tell me how it works with the energy equation. Thanks!

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Old   February 15, 2012, 06:31
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isabel
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Dear everybody,

I have exactly the same doubt. For example, the enthalpy equation of the solver xiFoam does not include any chemical reaction source term:

solve
(
fvm::ddt(rho, h)
+ mvConvection->fvmDiv(phi, h)
- fvm::laplacian(turbulence->alphaEff(), h)
= =
DpDt
);

How does the solver computes the increment of temperature due to combustion?
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Old   February 19, 2012, 18:54
Default total energy
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lapaci
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If the formulation is based on the total energy, energy equation does not include reacting source term. It is in the species equation (formation enthalpy.)

Poinsot & Veynant was explaining many formulations of energy equations.

p.s. i am new in OpenFoam, where can i find a simple tutorial for a diffusion flame and which solver shall i use.
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