ABSTRACT
One-fluid plasma models Zero-dimensional models approximate plasma configurations by one or several blocks. Naturally, these models are characterised by greatly restricted possibilities. Incomparably greater possibilities are offered by the hydrodynamic models in which the medium is divided into small, formerly infinitely small, quasi-autonomous ‘droplets’. The coordinates (x) of every droplet depend on time (t). A field of droplets is characterised by density n(x, t), velocity v(x, t), temperature T(x, t), the strength of the fields H(x, t), E(x, t), etc. The equations for these quantities also form the ‘basic’ model of hydrodynamic approximation. In this chapter, attention will be initially given to the principal moments of classic gas-dynamics and this will be followed by examination of the one-fluid ‘magnetic hydrodynamics’. The two-fluid plasma dynamics is discussed in chapter 3.
