Integrated numerical modeling to quantify transport and fate of microplastics in the hyporheic zone

F Dichgans, JP Boos, P Ahmadi, S Frei… - Water Research, 2023 - Elsevier
Despite the significance of rivers and streams as pathways for microplastics (MP) entering
the marine environment, limited research has been conducted on the behavior of MP within …

The elasticity of polymer melts and solutions in shear and extension flows

AV Subbotin, AY Malkin, VG Kulichikhin - Polymers, 2023 - mdpi.com
This review is devoted to understanding the role of elasticity in the main flow modes of
polymeric viscoelastic liquids—shearing and extension. The flow through short capillaries is …

Frozen propagation of Reynolds force vector from high-fidelity data into Reynolds-averaged simulations of secondary flows

A Amarloo, P Forooghi, M Abkar - Physics of Fluids, 2022 - pubs.aip.org
Successful propagation of information from high-fidelity sources (ie, direct numerical
simulations and large-eddy simulations) into Reynolds-averaged Navier–Stokes (RANS) …

Data-driven Reynolds stress models based on the frozen treatment of Reynolds stress tensor and Reynolds force vector

A Amarloo, P Cinnella, A Iosifidis, P Forooghi… - Physics of …, 2023 - pubs.aip.org
For developing a reliable data-driven Reynold stress tensor (RST) model, successful
reconstruction of the mean velocity field based on high-fidelity information (ie, direct …

[HTML][HTML] Progressive augmentation of Reynolds stress tensor models for secondary flow prediction by computational fluid dynamics driven surrogate optimisation

MJ Rincón, A Amarloo, M Reclari, XIA Yang… - International Journal of …, 2023 - Elsevier
Generalisability and the consistency of the a posteriori results are the most critical points of
view regarding data-driven turbulence models. This study presents a progressive …

Secondary flows in turbulent boundary layers developing over truncated cone surfaces

IK Kaminaris, E Balaras, MP Schultz… - Journal of Fluid …, 2023 - cambridge.org
The evolution of a turbulent boundary layer over truncated cones in staggered and random
configurations is investigated using direct numerical simulations. Three random planform …

Cooling performance of film-cooling holes fed by channels of various shapes

EM Veley, KA Thole - International Journal of Heat and Mass Transfer, 2023 - Elsevier
Internal and external cooling is pertinent to maintaining operable surface temperatures of
hot-section gas turbine components. Film cooling on the external surfaces is supplied from …

[HTML][HTML] Characteristics of slurry transport regimes: Insights from experiments and interface-resolved direct numerical simulations

T Shajahan, T Schouten, SKR Raaghav… - International Journal of …, 2024 - Elsevier
A common way to transport solids in large quantities is by using a carrier fluid to transport
the solids as a concentrated solid/liquid mixture or slurry through a pipeline. Typical …

Progressive augmentation of turbulence models for flow separation by multi-case computational fluid dynamics driven surrogate optimization

A Amarloo, MJ Rincón, M Reclari, M Abkar - Physics of Fluids, 2023 - pubs.aip.org
In the field of data-driven turbulence modeling, the consistency of the a posteriori results and
generalizability are the most critical aspects of new models. In this study, we combine a multi …

[HTML][HTML] Sidewall effect on turbulent band in subcritical transition of high-aspect-ratio duct flow

K Kohyama, M Sano, T Tsukahara - Physics of Fluids, 2022 - pubs.aip.org
We numerically studied high-aspect-ratio channel flows with spanwise sidewalls, that is,
wide duct flows, in its subcritical turbulent transitional regime. The infinite channel flow is …