Global spectral analysis: Review of numerical methods

P Sagaut, VK Suman, P Sundaram, MK Rajpoot… - Computers & …, 2023 - Elsevier
The design and analysis of numerical methods are usually guided by the following:(a) von
Neumann analysis using Fourier series expansion of unknowns,(b) the modified differential …

[HTML][HTML] Thermodynamics-informed neural network for recovering supercritical fluid thermophysical information from turbulent velocity data

N Masclans, F Vázquez-Novoa, M Bernades… - International Journal of …, 2023 - Elsevier
Recent research has highlighted the potential of supercritical fluids under high-pressure
transcritical conditions to achieve microconfined turbulence as a result of the thermophysical …

[HTML][HTML] Microconfined high-pressure transcritical fluid turbulence

M Bernades, F Capuano, L Jofre - Physics of Fluids, 2023 - pubs.aip.org
Microfluidics technology has grown rapidly over the past decades due to its high surface-to-
volume ratios, flow controllability, and length scales efficiently suited for interacting with …

[HTML][HTML] Dimensionality reduction of non-buoyant microconfined high-pressure transcritical fluid turbulence

L Jofre, M Bernades, F Capuano - International Journal of Heat and Fluid …, 2023 - Elsevier
This work utilizes a novel data-driven methodology to reduce the dimensionality of non-
buoyant microconfined high-pressure transcritical fluid turbulence. Classical dimensional …

[HTML][HTML] Global and local conservation of mass, momentum and kinetic energy in the simulation of compressible flow

G Coppola, AEP Veldman - Journal of Computational Physics, 2023 - Elsevier
The spatial discretization of convective terms in compressible flow equations is studied from
an abstract viewpoint, for finite-difference methods and finite-volume type formulations with …

[HTML][HTML] Artificial compressibility method for high-pressure transcritical fluids at low Mach numbers

A Abdellatif, J Ventosa-Molina, J Grau, R Torres… - Computers & …, 2024 - Elsevier
Supercritical fluids possess unique properties that makes them relevant in various scientific
and engineering applications. However, the experimental investigation of these fluids is …

[HTML][HTML] Analysis of the multi-dimensional Navier–Stokes equation by Caputo fractional operator

KS Albalawi, MN Mishra, P Goswami - Fractal and Fractional, 2022 - mdpi.com
In this article, we investigate the solution of the fractional multidimensional Navier–Stokes
equation based on the Caputo fractional derivative operator. The behavior of the solution …

On the Escape of Low-frequency Waves from Magnetospheres of Neutron Stars

E Golbraikh, Y Lyubarsky - The Astrophysical Journal, 2023 - iopscience.iop.org
We study the nonlinear decay of the fast magnetosonic (fms) into the Alfvén waves in
relativistic force-free magnetohydrodynamics. The work has been motivated by models of …

Multiscale flow topologies in microconfined high-pressure transcritical fluid turbulence

G Barea, N Masclans, L Jofre - Physical Review Fluids, 2023 - APS
The topology of multiscale turbulent motions in a high-pressure transcritical channel flow is
studied using direct numerical simulations. In particular, the system analyzed corresponds to …

Numerical treatment of the energy equation in compressible flows simulations

C De Michele, G Coppola - Computers & Fluids, 2023 - Elsevier
We analyze the conservation properties of various discretizations of the system of
compressible Euler equations for shock-free flows, with special focus on the treatment of the …