Quantitative analysis of the kinematics and induced aerodynamic loading of individual vortices in vortex-dominated flows: a computation and data-driven approach

K Menon, R Mittal - Journal of Computational Physics, 2021 - Elsevier
A physics-based data-driven computational framework for the quantitative analysis of vortex
kinematics and vortex-induced loads in vortex-dominated problems is presented. Such flows …

Significance of the strain-dominated region around a vortex on induced aerodynamic loads

K Menon, R Mittal - Journal of Fluid Mechanics, 2021 - cambridge.org
The ability of vortices to induce aerodynamic loads on proximal surfaces plays a significant
role in a wide variety of flows. However, most studies of vortex-induced effects primarily …

Innovative grid-based vorticity–velocity solver for analysis of vorticity-dominated flows

GR Whitehouse, AH Boschitsch - AIAA Journal, 2015 - arc.aiaa.org
Unsteady vorticity-dominated flows are prevalent in a wide variety of engineering
applications and are particularly challenging to predict efficiently. Perhaps in no other …

Data-assimilated low-order vortex modeling of separated flows

D Darakananda, AFC da Silva, T Colonius… - Physical Review …, 2018 - APS
Vortex models have been used for decades as computationally efficient tools to investigate
unsteady aerodynamics. However, their utility for separated flows—particularly when such …

Vortex methods with spatially varying cores

GH Cottet, P Koumoutsakos, MLO Salihi - Journal of Computational …, 2000 - Elsevier
The accuracy of vortex methods employing smooth vortex particles/blobs is determined by
the blob size, which can be viewed as a mollifier of the vorticity field. For computational …

A versatile taxonomy of low-dimensional vortex models for unsteady aerodynamics

D Darakananda, JD Eldredge - Journal of Fluid Mechanics, 2019 - cambridge.org
Inviscid vortex models have been demonstrated to capture the essential physics of
massively separated flows past aerodynamic surfaces, but they become computationally …

[HTML][HTML] Viscous extension of vortex methods for unsteady aerodynamics

CR Dos Santos, AS Rezaei, HE Taha - Physics of Fluids, 2021 - pubs.aip.org
The Kutta condition has been extensively used to determine aerodynamic loads of steady
and unsteady flows over airfoils. Nevertheless, the application of this condition to unsteady …

Code-to-code benchmark for simulation tools based on the unsteady vortex-lattice method

ML Verstraete, LR Ceballos, C Hente… - Journal of Aerospace …, 2023 - arc.aiaa.org
Reliable aerodynamic and aeroelastic simulations of advanced aeronautical/mechanical
systems require us to predict flow-induced forces as accurately as possible. Nowadays …

Modeling rotor wakes with a hybrid OVERFLOW-vortex method on a GPU cluster

M Stock, A Gharakhani, C Stone - 28th AIAA applied aerodynamics …, 2010 - arc.aiaa.org
The vortex core shed from rotorcraft blades maintains coherency—and thus dynamic
relevance—many blade turns after its creation. This presents a challenge to traditional …

Computational vorticity capturing-Application to helicopter rotor flows

J Steinhoff, W Yonghu, T Mersch… - 30th Aerospace Sciences …, 1992 - arc.aiaa.org
ABSTRACT A new method is presented for computing flows with strong, concentrated
vorticity, such as helicopter rotor flows. The method utilizes only a blade-fixed Euleriaii …