Real ddensity(Real p) const
derivative of fluid density wrt porepressure
Methane density - a quadratic fit to expressions in: "Results of (pressure, density, temperature) measurements on methane and on nitrogen in the temperature range from 273.15K to 323.15K at pressures up to 12MPa using new apparatus for accurate gas-density" This is only valid for p>=0, which is the physical region.
Real _p_unit
Unit of measurement for pressure (should be 1 for pressure in Pa, 1E6 for pressure in MPa...
Real density(Real p) const
fluid density as a function of porepressure
DIE A HORRIBLE DEATH HERE typedef LIBMESH_DEFAULT_SCALAR_TYPE Real
static InputParameters validParams()
const InputParameters & parameters() const
Base class for fluid density as a function of porepressure The functions density, ddensity and d2dens...
RichardsDensityMethane20degC(const InputParameters ¶meters)
Real d2density(Real p) const
second derivative of fluid density wrt porepressure