# Fluid component Properties¶

In this section some of the fluid and material property options available within PFLOTRAN are mentioned.

## Water: Trangenstein Density Modeling¶

$\rho = \frac{A_0 + A_1 T + A_2 T^2 + A_3 T^3 + A_4 T^4 + A_5 T^5 }{1+ A_6 T^6} e^{ c_{pw} (P_p − A_7 ) },$

where:

$\begin{split}\begin{split} &A_0 = 999.83952 \\ &A_1 = 16.955176 \\ &A_2 = –7.987\cdot10^{−3} \\ &A_3 = –46.170461\cdot10^{−6} \\ &A_4 = 105.56302\cdot10^{−9} \\ &A_5 = –280.54353\cdot10^{−12} \\ &A_6 = 16.87985\cdot10^{−3} \\ &A_7 = −10.2 \\ &c_{pw} = 0.0003947693 \mbox{ MPa} \end{split}\end{split}$

with the temperature $$T$$ given in degree Celsius and $$\rho$$ in $$\mbox{kg/m}^3$$.

## Water: Grabowsky viscosity model¶

$\mu_w = \frac{A_w}{ −1+ B_w T +C_w T^2_F},$

where:

$\begin{split}\begin{split} &A_w =2.1850 \\ &B_w =0.04012 \\ &C_w =5.1547\cdot 10^{−6} \end{split}\end{split}$

and the temperature $$T$$ given in degrees Fahrenheit and $$\mu$$ in $$cP$$.