If you go to Fluent -> Flux Reports-> Total sensible heat transfer rate->Compute then its gives you the value of heat of reaction source in Watts. The fluent manual given in the link states that it is the sum of heat for all reactions.
However, if you do the volume integral of Heat release rate (W/m3), over the entire fluid domain (formula given by the attached image), the units 'W' match but the values come out to be different from that of heat of reaction source as mentioned above. Are both the methods same??
I am doing micro-combustion simulations in 2D tubes using detailed chemistry of methane. The model is totally laminar finite rate chemistry. No slip at walls. Premixed mixture.
http://www.arc.vt.edu/ansys_help/flu_th/flu_th_sec_hxfer_theory.html#flu_th_eq6_3_5
If I understand, you ask to fluent the heat flux and when calculates the heat in the volume they doesn't match. Well, if was it, flux is through a material surface in W/ m².s . Fluent will integrate in the surface to compute the net flux. The volume integral is not the same you can have a adiabatic condition - null flux - and have a heat in the volume. I can be wrong, but they are not same procedures to compare.
Hi, Ricardo
No, I ask the fluent to give the heat of reaction source. As the units are in W, I am assuming it is not heat flux but the net heat generated in the entire volume.
So I calculated the volume integral of Heat release rate (W/m3) but the answer doesn't match. Since it is also the heat generated in the entire volume therefore the answer should match. If I am correct.
Hi! friend.I also meet the problem now.have you find the reason?and how to understand the total heat transfer by report-flux ?
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