| Abstract: | The extension criterion of ideal gas self-similarity motion is not very
complete. Hydrodynamic equations are made dimensionless, and then we obtain
the basic characteristic quantities solutions of ideal gas one-dimensional
self-similarity differential equations described by relative coordinate \xi
and distance r. All of them have the same form Y ( \xi ,r ) =
y ( \xi ) r^{C_Y }, which means that characteristic quantities for
every certain \xi are spatial scale-invariant according to r. It is proved
that the spatial scale-invariant is the existence condition of
one-dimensional ideal gas self-similarity motion. |
