Hydrodynamic flows exhibit turbulent behaviour which is not well understood till date. When
a fluid is in a gravitational field, the flow becomes even more complex due to the gravity …

This paper presents new advances in GPU-driven Fourier pseudo-spectral numerical
algorithms, which allow the simulation of turbulent fluid flow at problem sizes beyond the …

We present a new method for performing global redistributions of multidimensional arrays
essential to parallel fast Fourier (or similar) transforms. Traditional methods use standard all …

Fourier pseudo-spectral methods for nonlinear partial differential equations are of wide
interest in many areas of advanced computational science, including direct numerical …

In this paper, using hydrodynamic entropy, we quantify multiscale disorder in Euler and
hydrodynamic turbulence. These examples illustrate that the hydrodynamic entropy is not …

An existing hybrid MPI-OpenMP scheme is augmented with a CUDA-based fine grain
parallelization approach for multidimensional distributed Fourier transforms, in a well …

Spectra and fluxes of enstrophy and kinetic energy (KE) are estimated in different parts of
the midlatitudinal oceans using geostrophic currents derived from altimetry data. The …

We analyze the Prandtl number (Pr) dependence of spectra and fluxes of kinetic energy, as
well as the energy injection rates and dissipation rates, of turbulent thermal convection using …

In this paper, we show that, in the presence of large-scale circulation (LSC), Taylor's
hypothesis can be invoked to deduce the energy spectrum in thermal convection using real …

Natural convection in a cavity with a partially heated obstacle at the center at the Rayleigh
number R a= 1.46× 10 9 is investigated using large eddy simulation (LES). The standard …