The Effects of a Passively Actuated Trailing Edge on the Aerodynamics of an Oscillating Wing

Rushen, Jesse; Siala, Firas; Totpal, Alexander D.; Planck, C.; Liburdy, James A.

doi:10.1115/fedsm2014-22155

Cited by 5 publications

(4 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Studies on insect wings and fish fins suggested that flexibility may lead to the generation of higher lift and thrust (Katz and Weihs, 1978;Heathcote et al, 2004;Miao and Ho, 2006;Heathcote and Gursul, 2007;Zhu, 2007;Yin and Luo, 2010;Eldredge et al, 2010;Rushen et al, 2014). Some degree of flexibility can increase the effective camber of the wing, thus enhancing the strength of the leading edge vortex.…”

Section: Introductionmentioning

confidence: 95%

Energy harvesting of a heaving and forward pitching wing with a passively actuated trailing edge

Siala

Liburdy

2015

Journal of Fluids and Structures

Self Cite

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 95%

Energy harvesting of a heaving and forward pitching wing with a passively actuated trailing edge

Siala

Liburdy

2015

Journal of Fluids and Structures

Self Cite

View full text Add to dashboard Cite

“…Following these initial studies, comprehensive research has emerged, aimed at refining the energy capture potential of flapping foils. This research has delved into the optimization of motion parameters [7], examined the influence of geometric and viscous variables [8], and explored various flow control techniques [9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

“…Similarly, a study explores the enhancement of vibrational energies through modifications in flow dynamics [60]. Lastly, these studies examine how dynamic adjustments to wing configurations can affect energy extraction by modifying lift and drag forces, as highlighted by [10,61].…”

Section: Introductionmentioning

confidence: 99%

Numerically Investigating the Energy-Harvesting Performance of an Oscillating Flat Plate with Leading and Trailing Flaps

Saleh,

Sohn

2024

Energies

View full text Add to dashboard Cite

This study investigates the power generation capability of an oscillating wing energy harvester equipped with two actively controlled flaps positioned at the leading and trailing flaps of the wing. Various parameters, including flap lengths and pitch angles for the leading flap and trailing flap, are explored through numerical simulations. The length of the main wing body ranges from 40% to 65% of the chord length, c, while the leading and trailing flaps vary accordingly, summing up to the total length of the flat plate c = 100%. The pitch angles of the two flaps are adjusted within predefined limits. The pitch angle for the leading flap varies between 25° and 55°, while the trailing flap’s angle ranges from 10° to 40° across 298 different simulation scenarios. The results indicate that employing both leading and trailing flaps enhances the power output compared to a wing with a single flap configuration. The trailing flap deflects the incoming fluid more vertically, while the leading flap increases pressure difference across the surface of the main wing body, synergistically improving overall performance. The power output occurs at a specific length percentage: a leading flap of 30%, a main wing body of 50%, and a trailing flap of 20%, with pitch angles of 50°, 85°, and 30°, respectively, increasing the output power increments by 4.39% compared to a wing with a leading flap, 4.92% compared to a wing with a trailing flap, and 28.24% compared to a single flat plate. The highest efficiency for the specified length percentages is 40.37%.

show abstract

“…The idea of utilizing a flapping motion for energy generation was initially introduced by Wu in 1972 [3], and later, in 1981, McKinney and Delaurier pioneered the extraction of energy from the heaving and pitching motions of a fluid using a flapping foil [4]. Subsequently, extensive research has been conducted on optimizing the energy-harvesting capabilities of flapping foils via the investigation of motion parameters [1,5,6], geometric and viscous parameters [2,[7][8][9][10], and flow control methods [11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Enhancing the Performance of an Oscillating Wing Energy Harvester Using a Leading-Edge Flap

Alam,

Sohn

2023

JMSE

View full text Add to dashboard Cite

In this study, we investigated the power generation capability of an oscillating wing energy harvester featuring an actively controlled flap positioned at the wing’s leading edge. The findings revealed that attaching a leading-edge flap reduces fluid flow separation below the wing’s lower surface at the leading edge, resulting in smoother flow and increased velocity near the hinge region. The leading-edge flap increases the pressure difference across the wing’s surface, thereby enhancing the overall performance. In addition, the introduction of the leading-edge flap effectively elongates the wing’s effective projected length in the heaving direction, leading to increased thrust. We examined flap lengths ranging from 10% to 50% of the chord length, with the maximum pitch angles of the wing and flap varying from 75° to 105° and 30° to 55°, respectively. The optimal power generation was achieved using a flap length of 40% of the chord length, combined with maximum wing and flap pitch angles of 95° and 45°, respectively. These conditions yielded a 29.9% overall power output increase and a 20.2% efficiency improvement compared to the case without the leading-edge flap.

show abstract

The Effects of a Passively Actuated Trailing Edge on the Aerodynamics of an Oscillating Wing

Cited by 5 publications

References 22 publications

Energy harvesting of a heaving and forward pitching wing with a passively actuated trailing edge

Energy harvesting of a heaving and forward pitching wing with a passively actuated trailing edge

Numerically Investigating the Energy-Harvesting Performance of an Oscillating Flat Plate with Leading and Trailing Flaps

Enhancing the Performance of an Oscillating Wing Energy Harvester Using a Leading-Edge Flap

Contact Info

Product

Resources

About