TY  - CONF
AU  - Svorcan, Jelena
AU  - Griffin, Kevin Patrick
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4262
AB  - The flow field around a NACA 4412 airfoil is numerically investigated by means of large
eddy simulation (LES), an advanced mathematical model for turbulent flows which solves for
the low-pass filtered numerical solution. A subgrid-scale model is used to account for the
effects of unresolved small-scale turbulent structures on the resolved scales, while the flow
behavior near walls is modeled by wall functions [1]. Here, the investigated operating
conditions are a chord Reynolds number of 1.5 million and a Mach number of 0.2 at a high
angle-of-attack of 14°, where strong separation at the aft part of the airfoil suction side can be
observed. This validation case is chosen from the experimental dataset described and available
in [2]. The finest computational grid contains approximately 9 million control volumes. Fluid
flow computations are performed by the second-order low-dissipation finite-volume solver
charLES developed by Cascade Technologies, Inc. The Dynamic Smagorinsky subgrid-scale
model is employed, while a no-penetration stress-based algebraic equilibrium wall model is
applied along the airfoil walls. Velocity and pressure values are defined at inlet and outlet
boundaries, respectively, while periodic walls are used in the span. The obtained numerical
results are validated through comparison to experimental data. Fig. 1 illustrates the pressure
coefficient distributions. In addition, the instantaneous velocity field visualized in Fig. 2
illustrates that the flow structures resolved by the LES exhibit a wide range of length scales.
PB  - University of Belgrade, Faculty of Mechanical Engineering
C3  - Booklet of Abstracts - 1st International Conference on Mathematical Modelling in Mechanics and Engineering
T1  - LES of flow around NACA 4412 airfoil at high angle-of-attack
SP  - 50
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4262
ER  - 

@conference{
author = "Svorcan, Jelena and Griffin, Kevin Patrick",
year = "2022",
abstract = "The flow field around a NACA 4412 airfoil is numerically investigated by means of large
eddy simulation (LES), an advanced mathematical model for turbulent flows which solves for
the low-pass filtered numerical solution. A subgrid-scale model is used to account for the
effects of unresolved small-scale turbulent structures on the resolved scales, while the flow
behavior near walls is modeled by wall functions [1]. Here, the investigated operating
conditions are a chord Reynolds number of 1.5 million and a Mach number of 0.2 at a high
angle-of-attack of 14°, where strong separation at the aft part of the airfoil suction side can be
observed. This validation case is chosen from the experimental dataset described and available
in [2]. The finest computational grid contains approximately 9 million control volumes. Fluid
flow computations are performed by the second-order low-dissipation finite-volume solver
charLES developed by Cascade Technologies, Inc. The Dynamic Smagorinsky subgrid-scale
model is employed, while a no-penetration stress-based algebraic equilibrium wall model is
applied along the airfoil walls. Velocity and pressure values are defined at inlet and outlet
boundaries, respectively, while periodic walls are used in the span. The obtained numerical
results are validated through comparison to experimental data. Fig. 1 illustrates the pressure
coefficient distributions. In addition, the instantaneous velocity field visualized in Fig. 2
illustrates that the flow structures resolved by the LES exhibit a wide range of length scales.",
publisher = "University of Belgrade, Faculty of Mechanical Engineering",
journal = "Booklet of Abstracts - 1st International Conference on Mathematical Modelling in Mechanics and Engineering",
title = "LES of flow around NACA 4412 airfoil at high angle-of-attack",
pages = "50",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4262"
}

Svorcan, J.,& Griffin, K. P.. (2022). LES of flow around NACA 4412 airfoil at high angle-of-attack. in Booklet of Abstracts - 1st International Conference on Mathematical Modelling in Mechanics and Engineering
University of Belgrade, Faculty of Mechanical Engineering., 50.
https://hdl.handle.net/21.15107/rcub_machinery_4262

Svorcan J, Griffin KP. LES of flow around NACA 4412 airfoil at high angle-of-attack. in Booklet of Abstracts - 1st International Conference on Mathematical Modelling in Mechanics and Engineering. 2022;:50.
https://hdl.handle.net/21.15107/rcub_machinery_4262 .

Svorcan, Jelena, Griffin, Kevin Patrick, "LES of flow around NACA 4412 airfoil at high angle-of-attack" in Booklet of Abstracts - 1st International Conference on Mathematical Modelling in Mechanics and Engineering (2022):50,
https://hdl.handle.net/21.15107/rcub_machinery_4262 .

TY  - JOUR
AU  - Svorcan, Jelena
AU  - Wang, Jonathan M.
AU  - Griffin, Kevin Patrick
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3724
AB  - Successful flow control may bring numerous benefits, such as flow stabilization, flow reattachment, separation delay, drag reduction, lift increase, aerodynamic performance improvement, energy efficiency increase, shock delay or weakening, noise reduction, etc. For these purposes, many different flow control devices, which can be classified as passive, semi-active and active, have been designed and tested. This review paper aims to highlight the most promising and commonly employed boundary layer control methods as well as outline their potential in specific applications in aerospace and energy engineering. Referenced studies, performed on various geometries (flat plates, channels, airfoils, wings, blades, cylinders), are primarily numerical or experimental. Although enhanced aerodynamic performance is achieved in many cases, further research is required to draw general conclusions. This paper aims to demonstrate that, in the future, we may expect further developments of flow control actuators, as well as their increased application.
PB  - Sage Publications Ltd, London
T2  - Advances in Mechanical Engineering
T1  - Current state and future trends in boundary layer control on lifting surfaces
IS  - 7
VL  - 14
DO  - 10.1177/16878132221112161
ER  - 

@article{
author = "Svorcan, Jelena and Wang, Jonathan M. and Griffin, Kevin Patrick",
year = "2022",
abstract = "Successful flow control may bring numerous benefits, such as flow stabilization, flow reattachment, separation delay, drag reduction, lift increase, aerodynamic performance improvement, energy efficiency increase, shock delay or weakening, noise reduction, etc. For these purposes, many different flow control devices, which can be classified as passive, semi-active and active, have been designed and tested. This review paper aims to highlight the most promising and commonly employed boundary layer control methods as well as outline their potential in specific applications in aerospace and energy engineering. Referenced studies, performed on various geometries (flat plates, channels, airfoils, wings, blades, cylinders), are primarily numerical or experimental. Although enhanced aerodynamic performance is achieved in many cases, further research is required to draw general conclusions. This paper aims to demonstrate that, in the future, we may expect further developments of flow control actuators, as well as their increased application.",
publisher = "Sage Publications Ltd, London",
journal = "Advances in Mechanical Engineering",
title = "Current state and future trends in boundary layer control on lifting surfaces",
number = "7",
volume = "14",
doi = "10.1177/16878132221112161"
}

Svorcan, J., Wang, J. M.,& Griffin, K. P.. (2022). Current state and future trends in boundary layer control on lifting surfaces. in Advances in Mechanical Engineering
Sage Publications Ltd, London., 14(7).
https://doi.org/10.1177/16878132221112161

Svorcan J, Wang JM, Griffin KP. Current state and future trends in boundary layer control on lifting surfaces. in Advances in Mechanical Engineering. 2022;14(7).
doi:10.1177/16878132221112161 .

Svorcan, Jelena, Wang, Jonathan M., Griffin, Kevin Patrick, "Current state and future trends in boundary layer control on lifting surfaces" in Advances in Mechanical Engineering, 14, no. 7 (2022),
https://doi.org/10.1177/16878132221112161 . .