Title: Integrated analysis of energy transfers in elastic-wave turbulence,
Abstract: In elastic-wave turbulence, strong turbulence appears in small wave numbers
while weak turbulence does in large wave numbers. Energy transfers in the
coexistence of these turbulent states are numerically investigated in both of
the Fourier space and the real space. An analytical expression of a detailed
energy balance reveals from which mode to which mode energy is transferred in
the triad interaction. Stretching energy excited by external force is
transferred nonlocally and intermittently to large wave numbers as the kinetic
energy in the strong turbulence. In the weak turbulence, the resonant
interactions according to the weak turbulence theory produces cascading net
energy transfer to large wave numbers. Because the system's nonlinearity shows
strong temporal intermittency, the energy transfers are investigated at active
and moderate phases separately. The nonlocal interactions in the Fourier space
are characterized by the intermittent bundles of fibrous structures in the real
space.