A data assimilation model for wall pressure-driven mean flow reconstruction

S Li, C He, Y Liu - Physics of Fluids, 2022 - pubs.aip.org
This study establishes a continuous adjoint data assimilation model (CADA) for the
reproduction of global turbulent mean flow from a limited number of wall pressure …

Effect of geometry and Reynolds number on the turbulent separated flow behind a bulge in a channel

JP Mollicone, F Battista, P Gualtieri… - Journal of Fluid …, 2017 - cambridge.org
Turbulent flow separation induced by a protuberance on one of the walls of an otherwise
planar channel is investigated using direct numerical simulations. Different bulge …

Parametric analysis of excited round jets-numerical study

A Tyliszczak, BJ Geurts - Flow, turbulence and combustion, 2014 - Springer
A computational analysis of excited round jets is presented with emphasis on jet bifurcation
phenomenon due to superposition of axial and flapping forcing terms. Various excitation …

A mathematical modeling study of the influence of small amounts of KCl solution tracers on mixing in water and residence time distribution of tracers in a continuous …

C Chen, LTI Jonsson, A Tilliander, G Cheng… - Chemical Engineering …, 2015 - Elsevier
In an earlier research (Chen et al., 2015a) a mathematical model was established to
simulate tracer mixing (a KCl solution). The predicted Residence Time Distribution (RTD) …

Turbulent kinetic energy budgets in wall bounded flows with pressure gradients and separation

LACA Schiavo, WR Wolf, JLF Azevedo - Physics of fluids, 2017 - pubs.aip.org
Numerical simulations are employed to investigate the turbulent kinetic energy (TKE)
budgets in turbulent channel flows with pressure gradients and separation. Incompressible …

LES predictions of self-sustained oscillations in homogeneous density round free jet

K Wawrzak, A Boguslawski, A Tyliszczak - Flow, Turbulence and …, 2015 - Springer
The paper presents a detailed LES analysis of turbulent round jets dominated by the
mechanism of Kelvin-Helmholtz (KH) instability and the so-called self-sustained regime …

Controlled mixing enhancement in turbulent rectangular jets responding to periodically forced inflow conditions

A Tyliszczak, BJ Geurts - Journal of Turbulence, 2015 - Taylor & Francis
We present numerical studies of active flow control applied to jet flow. We focus on
rectangular jets, which are more unstable than their circular counterparts. The higher level of …

Large eddy simulation predictions of absolutely unstable round hot jet

A Boguslawski, A Tyliszczak, K Wawrzak - Physics of Fluids, 2016 - pubs.aip.org
The paper presents a novel view on the absolute instability phenomenon in heated variable
density round jets. As known from literature the global instability mechanism in low density …

Self-sustained oscillations in a homogeneous-density round jet

A Boguslawski, A Tyliszczak, S Drobniak… - Journal of …, 2013 - Taylor & Francis
The paper is devoted to a new phenomenon of self-sustained oscillations triggered in a
round free homogeneous-density jet. It was shown by the experimental investigations …

Curvature effects on the structure of near-wall turbulence

D Selvatici, M Quadrio, A Chiarini - Journal of Fluid Mechanics, 2023 - cambridge.org
The interaction between near-wall turbulence and wall curvature is described for the
incompressible flow in a plane channel with a small concave–convex–concave bump on the …