The Landau 2-fluid equations for the motion of helium II are often criticised on two grounds: they ignore healing of the wave function, and they require the superfluid percentage to change instantaneously when the thermodynamic state is altered. In 1970 Khalatnikov proposed a way of incorporating relaxation effects associated with conversion between superfluid and normal fluid. Using this as our starting point and employing the techniques of modern continuum mechanics, we develop a thermodynamically acceptable generalization that incorporates both healing and relaxation phenomena. © 1977.
|Number of pages||12|
|Journal||International Journal of Engineering Science|
|Publication status||Published - 1977|