[Fluent Inc. Logo] return to home search
next up previous contents index

8.10 Standard State Enthalpies

When you are solving a reacting flow using the finite-rate or eddy dissipation model, you will need to define the standard state enthalpy (also known as the formation enthalpy or heat of formation), $h^{0}_j$ for each species $j$. These inputs are used to define the mixture enthalpy as

 H = \sum_j m_j \left[ h^{0}_j + \int^{T}_{T_{{\rm ref},j}} \;\; c_{p,j} dT \right] (8.10-1)

where $T_{{\rm ref},j}$ is the reference temperature at which $h_j^{0}$ is defined. Standard state enthalpies are input in units of J/kg mol in SI units or in units of Btu/lb $_m$mol in British units.

For each species involved in the reaction (i.e., each fluid material contained in the mixture material), you can set the Standard State Enthalpy and Reference Temperature in the Materials panel.

next up previous contents index Previous: 8.9.5 Mass Diffusion Coefficient
Up: 8. Physical Properties
Next: 8.11 Standard State Entropies
© Fluent Inc. 2006-09-20