  Multi-fractal model for dissipation field has been used to provide a detailed
structure for the critical exponent \sigma describing the scaling form of
dissipation \epsilon that appears to exhibit an interesting universality
covering radically different hydrodynamic fully developed turbulence (FDT)
systems. This result also appears to provide a consistent framework for
classification of dissipation field into critical, subcritical and
supercritical cases. Some FDT problems that exemplify these cases are
discussed.
