### [Doc] Added a description of GeneralWaterVapourLatentHeat

parent abd9d079
 ... ... @@ -18,6 +18,48 @@ namespace MaterialPropertyLib { class Phase; /** * \brief A general latent heat model of vaporisation of water. * * The model uses an equation for a general expression of the latent heat of * vaporisation of water in the vicinity of and far away from the critical * temperature, which was presented by Torquato and Stell in * \cite torquato1982equation. * * Denoting the critical temperature as \f$T_c\f$, and introducing a * dimensionless variable \f$\tau=(T_c-T)/T_c\f$ associated with temperature * \f$T\f$, the equation is given by * * \f[ * L(\tau) = a_1 \tau^{\beta}+a_2 \tau^{\beta+\Delta} * +a_4 \tau^{1-\alpha+\beta} * +\sum_{n=1}^{M}(b_n \tau^n),\,\text{[kJ/kg]}, * \f] * where the parameters of \f$b_n\f$ are obtained by the least square method * by fitting the equation with the experiment data. * * In this model, the parameter set of \f$M=5\f$ is taken for a high accuracy. * All parameters are given below: *
*
• \f$\alpha=1/8,\,\beta=1/3,\, \Delta=0.79-\beta\f$, *
• \f$a_1=1989.41582,\, a_2=11178.45586, a_4=26923.68994\f$, *
• \f$b_n:=\{-28989.28947, -19797.03646, 28403.32283, * -30382.306422, 15210.380\}\f$. *
* * The critical temperature is 373.92 \f$^{\circ}\f$C. * * A comparison of this model with the model of * MaterialPropertyLib::LinearWaterVapourLatentHeat * is given in the following figure. * * \image{inline} html general_latent_heat_water_vapour.png "" * * Based on the comparison, a conclusion can be drawn such that * the linear model can be applied for the applications with temperature * below 400 K. * */ class GeneralWaterVapourLatentHeat final : public Property { public: ... ...
Supports Markdown
0% or .
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment