Function viscosity_d_pressure

pub fn viscosity_d_pressure(
    temperature: f64,
    x_nacl: f64,
) -> Result<f64, String>

Calculation of viscosity derivative w.r.t. pressure

Viscosity, Pa*s, is calculated from:

Mostafa H. Sharqawy, John H. Lienhard V, Syed M. Zubair, Desalination and Water Treatment, doi 10.5004/dwt.2010.1079

It is pressure indepedendent, valid in the range of [273.15-453.15] K and x[NaCl]=[0,0.05159128949] mol/mol

#Arguments

• temperature - temperature, K
• x_nacl - mole fraction of NaCl, mol/mol

Returns

Viscosity derivative w.r.t. pressure, Pa*s/Pa, or an error