Method isothermal_compressibility

src/AbstractState.cpp:950–952

    calc_phase_envelope(type);
}
double AbstractState::isothermal_compressibility() {
    return 1.0 / _rhomolar * first_partial_deriv(iDmolar, iP, iT);
}
double AbstractState::isobaric_expansion_coefficient() {
    return -1.0 / _rhomolar * first_partial_deriv(iDmolar, iT, iP);
}