Analysis and optimization of dimpled surface modified for wing planforms

Baweja, Chakshu; Dhannarapu, Rakesh; Niroula, Utsav; Prakash, Ishaan

doi:10.1109/icmae.2016.7549590

Cited by 3 publications

(1 citation statement)

References 6 publications

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“…The study further points out that roughness characterization by means of height alone is not enough. Another study used a less random design to achieve manipulation of the flow over an airfoil [3]. Using a single line of dimples in the surface of the airfoil, as inspired by the dimples of a golf ball, the separation of the flow over the airfoil was delayed.…”

Section: Introductionmentioning

confidence: 99%

Flow Around an Autonomous Underwater Vehicle With Bio-Inspired Coating

Watkins¹,

Montoya-Segnini²,

Aksak³

et al. 2018

Proceedings of the 16th LACCEI International Multi-Conference for Engineering, Education, and Technology: “Innovation in Educat

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Flow separation is a major factor in the form drag experienced by a moving object. In particular, suppressing or reducing flow separation is critical in the reduction of energy expenditure of autonomous underwater vehicles. Previous research suggests that bio-inspired micro-fibrillar structures are capable of reducing the boundary layer separation in a turbulent flow. Here, we present laboratory measurements using particle tracking velocimetry near the wall of two submersible vessel models: one coated with an array of micro-fibers and a second one with smooth walls. The flow around the vessels was enticed by the ordered micro-fibers to retain higher velocities near the wall of the vessel. The experiments suggest that separation of the flow may be reduced by the use of the bio-inspired micro-fibers.

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Section: Introductionmentioning

confidence: 99%

Flow Around an Autonomous Underwater Vehicle With Bio-Inspired Coating

Watkins¹,

Montoya-Segnini²,

Aksak³

et al. 2018

Proceedings of the 16th LACCEI International Multi-Conference for Engineering, Education, and Technology: “Innovation in Educat

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show abstract

Numerical investigation of dimple effects on darrieus vertical axis wind turbine

Sobhani

Ghaffari

Maghrebi

2017

Energy

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Effects of the influence of triangular dimple and aspect ratio on NACA 4412 airfoil on the overall performance of H-Darrieus wind rotor: An experimental investigation

Nagaraju,

Gupta,

Bhowmik

2024

Wind Engineering

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This study examines how adjusting aspect ratio (AR) and adding triangular dimples to the airfoil can enhance H-type Darrieus wind rotor (H-rotor) performance under low wind speeds (4, 6, and 8 m/s) using wind tunnel testing. Results show optimal performance at an AR of 1.0 for both standard and Triangular dimple airfoil H-rotors, with variations at different wind speeds for other aspect ratios. Triangular dimple-equipped H-rotors demonstrate improved self-starting capability and a wider operational range of tip speed ratio (TSR) compared to standard rotors, ensuring reliability across diverse wind conditions. Moreover, the triangular dimple rotor achieves a nearly 13.6% increase in maximum coefficient of power ([Formula: see text]) compared to the dimple-free H-rotor at 4 m/s wind speed. This study underscores the efficacy of adjusting AR and integrating triangular dimple blades to enhance H-rotor performance, particularly in low wind speeds.

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Analysis and optimization of dimpled surface modified for wing planforms

Cited by 3 publications

References 6 publications

Flow Around an Autonomous Underwater Vehicle With Bio-Inspired Coating

Flow Around an Autonomous Underwater Vehicle With Bio-Inspired Coating

Numerical investigation of dimple effects on darrieus vertical axis wind turbine

Effects of the influence of triangular dimple and aspect ratio on NACA 4412 airfoil on the overall performance of H-Darrieus wind rotor: An experimental investigation

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