A second-order resolvent formulation for the analysis of turbulent flow structures by Chevalier, Quentin, Lutz, Lesshafft, Cavalieri, André V. G.

Get full text

Explicit iteration of an unbounded solution of turbulent flow model involving ψ-Riemann–Liouville fractional derivatives by Sabri T.M. Thabet, Imed Kedim, Bahaaeldin Abdalla, Thabet Abdeljawad

Subjects: Get full text

Aerodynamic Performance of Different Trailing-edge Serrations for High Reynolds Number Flows around Wing-flap System by S. Ahmadkhah, A. Jahangirian, A. Zarinvafa

Subjects: Get full text

Stable schemes for second-moment turbulent models for incompressible flows by Ferrand, Martin, Hérard, Jean-Marc, Norddine, Thomas, Ruget, Simon

Subjects: Get full text

Investigation on the influencing mechanism and quantitative evaluation of stirred heat effect in high-speed mechanical seals by Xuezhong Ma, Xiaoxin Xiao

“…Secondly, in terms of heat generation, because of the high-speed shear effect of rotor, a much larger effective viscosity, radial velocity gradient, turbulence intensity and turbulence dissipation rate are generated by the turbulent flow in sealed chamber, which are responsible for the significant stirred heat. …”
Get full text

Deep reinforcement learning for active flow control in a turbulent separation bubble by Bernat Font, Francisco Alcántara-Ávila, Jean Rabault, Ricardo Vinuesa, Oriol Lehmkuhl

“…This allows to significantly reduce the computational cost of DRL training in a turbulent-flow environment. On the fine grid, the periodic control is able to reduce the TSB area by 6.8%, while the DRL-based control achieves 9.0% reduction. …”
Get full text

Radiatively driven convection: diffusivity-free regimes of geophysical and astrophysical flows in the laboratory by Hadjerci, Gabriel, Bouillaut, Vincent, Miquel, Benjamin, Aumaître, Sébastien, Gallet, Basile

“…The widespread belief is that the transport properties of the turbulent flow should be independent of the tiny molecular diffusivities for asymptotically strong driving, but the associated “ultimate” scaling regime proves challenging to observe experimentally using standard convection cells (Rayleigh–Bénard geometry). …”
Get full text

Uncertainties in the finite-time Lyapunov exponent in an ocean ensemble prediction model by M. Matuszak, J. Röhrs, P. E. Isachsen, P. E. Isachsen, M. Idžanović

“…Generally, trajectory simulations, such as Lagrangian trajectories, inherit uncertainty from the underlying ocean model, bearing substantial uncertainties as a result of chaotic and turbulent flow fields. As the FTLE characterizes the flow, which may impact particle transport, we aim to investigate the uncertainty of FTLE fields at any given time using an ensemble prediction system (EPS) to propagate velocity field uncertainty into the FTLE analysis. …”
Get full text

Assessing the salinization mechanisms of coastal brackish springs by Sanz, Esteban, Carrera, Jesús, Ayora, Carlos, Barón, Alfredo, González, Concha

“…To this end, we derive the equations governing variable-density turbulent flow through the conduits. These turn out to be similar to the traditional ones, except that (1) Bernouilli’s head (energy per unit weight) is substituted by the energy per unit volume, and (2) this energy is not a potential, as a flow path dependent term needs to be added. …”
Get full text

Turbulence modeling and simulation advances in CFD during the past 50 years by Schiestel, Roland, Chaouat, Bruno

“…This paper is a short retrospective review of the predictive methods of turbulent flows in Computational Fluid Dynamics over the last 50 years since the first development of computers. …”
Get full text

Experimental and Computational Fluid Dynamics: decades of turbulent EFD/CFD complementarity by Bonnet, Jean Paul

“…An overview of the parallel evolution of computations and experiments in fluid dynamics in the context of turbulent flows is given, viewed from an experimental side. …”
Get full text

CFD for turbulence: from fundamentals to geophysics and astrophysics by Cambon, Claude, Alvarez Laguna, Alejandro, Zhou, Ye

“…Over the years, the combination of computational fluid dynamics (CFD) and theoretical models have critically contributed to improving our understanding of the nature of turbulent flows. In this paper, we review the role of CFD in the study of turbulence through both direct numerical simulations and the resolution of statistical multi-scale theories. …”
Get full text

Exploring the Complex Heliotail Boundary by an Extended Level Set Approach by C. Onubogu, M. Opher, M. Kornbleuth, G. Tóth, V. Florinski

“…We find that the f _HP = 0 criterion, the standard heliopause definition used by other models to determine where solar wind and interstellar plasma meet, is impacted in the heliotail, where there is a broad mixing region of solar wind and interstellar medium plasma, by the nature of turbulent flows in the heliotail. We explore a different isosurface, defined by f _HP = 0.99, where the interface is composed of 99.5% solar wind and 0.50% interstellar medium. …”
Get full text