  High-Rayleigh number convective turbulence is ubiquitous in many natural
phenomena and in industries, such as atmospheric circulations, oceanic flows,
flows in the fluid core of planets, and energy generations. In this work, we
present a novel approach to boost the Rayleigh number in thermal convection by
exploiting centrifugal acceleration and rapidly rotating a cylindrical annulus
to reach an effective gravity of 60 times Earth's gravity. We show that in the
regime where the Coriolis effect is strong, the scaling exponent of Nusselt
number versus Rayleigh number exceeds one-third once the Rayleigh number is
large enough. The convective rolls revolve in prograde direction, signifying
the emergence of zonal flow. The present findings open a new avenue on the
exploration of high-Rayleigh number turbulent thermal convection and will
improve the understanding of the flow dynamics and heat transfer processes in
geophysical and astrophysical flows and other strongly rotating systems.
