Flow structure modifications by leading-edge tubercles on a 3D wing.

Abstract:

:Leading-edge tubercles on a humpback whale flipper are known to enhance its hydrodynamic performance at post-stall angles of attack (Miklosovic et al 2004 Phys. Fluids 16 39-42). We investigate vortical structures above a three-dimensional wing with tubercles using surface-oil-flow visualization and particle image velocimetry measurement. Two wing models with and without tubercles, previously studied by Miklosovic et al (2004 Phys. Fluids 16 39-42), are considered at the Reynolds number of 180 000 based on the free-stream velocity and mean chord length. At this Reynolds number, tubercles delay the stall angle by 7° and increase the maximum lift coefficient by about 22%. At a low angle of attack, flow separation first occurs near the tip region for both wing models. While flow separation rapidly progresses inboard (toward the wing root) for the model without tubercles with increasing angle of attack, tubercles produce two types of vortical motions and block the inboard progression of flow separation, resulting in delayed stall from α  =  8° to 15°. One of these two vortical structures is pairs of counter-rotating streamwise vortices evolving from hemi-spherical separation bubbles near the leading-edge troughs at pre-, near-, and post-stall angles of attack, and the other is asymmetric pairs of streamwise vortices evolving from separated flow regions after the mid-chord region at near-stall angle of attack. At a post-stall angle of attack (α  =  16°), strong clockwise and counter-clockwise streamwise vortices are generated from foci at the root and tip near the trailing edge, respectively, and delay flow separation in the mid-span, resulting in a higher lift coefficient than that without tubercles.

journal_name

Bioinspir Biomim

authors

Kim H,Kim J,Choi H

doi

10.1088/1748-3190/aae6fc

subject

Has Abstract

pub_date

2018-10-26 00:00:00

pages

066011

issue

6

eissn

1748-3182

issn

1748-3190

journal_volume

13

pub_type

杂志文章
  • Artificial insect wings with biomimetic wing morphology and mechanical properties.

    abstract::The pursuit of a high lift force for insect-scale flapping-wing micro aerial vehicles (FMAVs) requires that their artificial wings possess biomimetic wing features which are close to those of their natural counterpart. In this work, we present both fabrication and testing methods for artificial insect wings with biomi...

    journal_title:Bioinspiration & biomimetics

    pub_type: 杂志文章

    doi:10.1088/1748-3190/aa7f16

    authors: Liu Z,Yan X,Qi M,Zhu Y,Huang D,Zhang X,Lin L

    更新日期:2017-09-26 00:00:00

  • Bending continuous structures with SMAs: a novel robotic fish design.

    abstract::In this paper, we describe our research on bio-inspired locomotion systems using deformable structures and smart materials, concretely shape memory alloys (SMAs). These types of materials allow us to explore the possibility of building motor-less and gear-less robots. A swimming underwater fish-like robot has been dev...

    journal_title:Bioinspiration & biomimetics

    pub_type: 杂志文章

    doi:10.1088/1748-3182/6/4/045005

    authors: Rossi C,Colorado J,Coral W,Barrientos A

    更新日期:2011-12-01 00:00:00

  • The application of conducting polymers to a biorobotic fin propulsor.

    abstract::Conducting polymer actuators based on polypyrrole are being developed for use in biorobotic fins that are designed to create and control forces like the pectoral fin of the bluegill sunfish (Lepomis macrochirus). It is envisioned that trilayer bending actuators will be used within, and as, the fin's webbing to create ...

    journal_title:Bioinspiration & biomimetics

    pub_type: 杂志文章,评审

    doi:10.1088/1748-3182/2/2/S02

    authors: Tangorra J,Anquetil P,Fofonoff T,Chen A,Del Zio M,Hunter I

    更新日期:2007-06-01 00:00:00

  • How wing kinematics affect power requirements and aerodynamic force production in a robotic bat wing.

    abstract::Bats display a wide variety of behaviors that require different amounts of aerodynamic force. To control and modulate aerodynamic force, bats change wing kinematics, which, in turn, may change the power required for wing motion. There are many kinematic mechanisms that bats, and other flapping animals, can use to incr...

    journal_title:Bioinspiration & biomimetics

    pub_type: 杂志文章

    doi:10.1088/1748-3182/9/2/025008

    authors: Bahlman JW,Swartz SM,Breuer KS

    更新日期:2014-06-01 00:00:00

  • From falling to flying: the path to powered flight of a robotic samara nano air vehicle.

    abstract::This paper details the development of a nano-scale (>15 cm) robotic samara, or winged seed. The design of prototypes inspired by naturally occurring geometries is presented along with a detailed experimental process which elucidates similarities between mechanical and robotic samara flight dynamics. The helical trajec...

    journal_title:Bioinspiration & biomimetics

    pub_type: 杂志文章

    doi:10.1088/1748-3182/5/4/045009

    authors: Ulrich ER,Pines DJ,Humbert JS

    更新日期:2010-12-01 00:00:00

  • Systematic comparison of model polymer nanocomposite mechanics.

    abstract::Polymer nanocomposites render a range of outstanding materials from natural products such as silk, sea shells and bones, to synthesized nanoclay or carbon nanotube reinforced polymer systems. In contrast to the fast expanding interest in this type of material, the fundamental mechanisms of their mixing, phase behavior...

    journal_title:Bioinspiration & biomimetics

    pub_type: 杂志文章

    doi:10.1088/1748-3190/11/5/055008

    authors: Xiao S,Peter C,Kremer K

    更新日期:2016-09-13 00:00:00

  • Active vision: on the relevance of a bio-inspired approach for object detection.

    abstract::Starting from biological systems, we review the interest of active perception for object recognition in an autonomous system. Foveated vision and control of the eye saccade introduce strong benefits related to the differentiation of a 'what' pathway recognizing some local parts in the image and a 'where' pathway relat...

    journal_title:Bioinspiration & biomimetics

    pub_type: 杂志文章,评审

    doi:10.1088/1748-3190/ab504c

    authors: Hoang K,Pitti A,Goudou JF,Dufour JY,Gaussier P

    更新日期:2020-02-14 00:00:00

  • Design and modelling of an engineered bacteria-based, pressure-sensitive soil.

    abstract::In this paper, we describe the first steps in the design of a synthetic biological system based on the use of genetically modified bacteria to detect elevated pressures in soils and respond by cementing soil particles. Such a system might, for example, enable a self- constructed foundation to form in response to load ...

    journal_title:Bioinspiration & biomimetics

    pub_type: 杂志文章

    doi:10.1088/1748-3190/aabe15

    authors: Dade-Robertson M,Mitrani H,Corral JR,Zhang M,Hernan L,Guyet A,Wipat A

    更新日期:2018-05-25 00:00:00

  • Application of reduced sensor movement sequences as a precursor for search area partitioning and a selection of discrete EEV contour-ring fragments for active electrolocation.

    abstract::In addition to their visual sense, weakly electric fish use active electrolocation to detect and analyse objects in their nearby environment. Their ability to generate and sense electric fields combined with scanning-like swimming movements are intended to extract further parameters like the size, shape and material p...

    journal_title:Bioinspiration & biomimetics

    pub_type: 杂志文章

    doi:10.1088/1748-3190/aae23f

    authors: Wolf-Homeyer S,Engelmann J,Schneider A

    更新日期:2018-10-16 00:00:00

  • Controlling legs for locomotion-insights from robotics and neurobiology.

    abstract::Walking is the most common terrestrial form of locomotion in animals. Its great versatility and flexibility has led to many attempts at building walking machines with similar capabilities. The control of walking is an active research area both in neurobiology and robotics, with a large and growing body of work. This p...

    journal_title:Bioinspiration & biomimetics

    pub_type: 杂志文章,评审

    doi:10.1088/1748-3190/10/4/041001

    authors: Buschmann T,Ewald A,von Twickel A,Büschges A

    更新日期:2015-06-29 00:00:00

  • Honey bee hairs and pollenkitt are essential for pollen capture and removal.

    abstract::While insect grooming has been observed and documented for over one hundred years, we present the first quantitative analysis of this highly dynamic process. Pollinating insects, like honey bees, purposely cover themselves with millions of pollen particles that, if left ungroomed, would make sensing and controlled fli...

    journal_title:Bioinspiration & biomimetics

    pub_type: 杂志文章

    doi:10.1088/1748-3190/aa5c6e

    authors: Amador GJ,Matherne M,Waller D,Mathews M,Gorb SN,Hu DL

    更新日期:2017-03-23 00:00:00

  • Realization of a Push-Me-Pull-You swimmer at low Reynolds numbers.

    abstract::Locomotion at low Reynolds numbers encounters stringent physical constraints due to the dominance of viscous over inertial forces. A variety of swimming microorganisms has demonstrated diverse strategies to generate self-propulsion in the absence of inertia. In particular, ameboid and euglenoid movements exploit shape...

    journal_title:Bioinspiration & biomimetics

    pub_type: 杂志文章

    doi:10.1088/1748-3190/aba2b9

    authors: Silverberg O,Demir E,Mishler G,Hosoume B,Trivedi NR,Tisch C,Plascencia D,Pak OS,Araci IE

    更新日期:2020-07-03 00:00:00

  • Artificial Manduca sexta forewings for flapping-wing micro aerial vehicles: how wing structure affects performance.

    abstract::A novel approach to fabricating and testing artificial insect wings has been developed. Utilizing these new techniques, locally harvested hawk moth (Manduca sexta) forewings are compared to engineered forewings with varying wing structures. A number of small, flexible engineered forewings were fabricated with identica...

    journal_title:Bioinspiration & biomimetics

    pub_type: 杂志文章

    doi:10.1088/1748-3190/aa7ea3

    authors: Moses KC,Michaels SC,Willis M,Quinn RD

    更新日期:2017-09-26 00:00:00

  • Large-amplitude undulatory swimming near a wall.

    abstract::The propulsive dynamics of a flexible undulating foil in a self-propelled swimming configuration near a wall is studied experimentally. Measurements of the swimming speed and the propulsive force are presented, together with image acquisition of the kinematics of the foil and particle image velocimetry (PIV) in its wa...

    journal_title:Bioinspiration & biomimetics

    pub_type: 杂志文章

    doi:10.1088/1748-3190/10/1/016003

    authors: Fernández-Prats R,Raspa V,Thiria B,Huera-Huarte F,Godoy-Diana R

    更新日期:2015-01-05 00:00:00

  • Range dependent characteristics in the head-related transfer functions of a bat-head cast: part 1. Monaural characteristics.

    abstract::Knowledge of biological sonar systems has revolutionized many aspects of sonar engineering and further advances will benefit from more detailed understanding of their underlying acoustical processes. The anatomically diverse, complex and dynamic heads and ears of bats are known to be important for echolocation althoug...

    journal_title:Bioinspiration & biomimetics

    pub_type: 杂志文章

    doi:10.1088/1748-3182/7/4/046014

    authors: Kim S,Allen R,Rowan D

    更新日期:2012-12-01 00:00:00

  • Creating bio-inspired hierarchical 3D-2D photonic stacks via planar lithography on self-assembled inverse opals.

    abstract::Structural hierarchy and complex 3D architecture are characteristics of biological photonic designs that are challenging to reproduce in synthetic materials. Top-down lithography allows for designer patterning of arbitrary shapes, but is largely restricted to planar 2D structures. Self-assembly techniques facilitate e...

    journal_title:Bioinspiration & biomimetics

    pub_type: 杂志文章

    doi:10.1088/1748-3182/8/4/045004

    authors: Burgess IB,Aizenberg J,Lončar M

    更新日期:2013-12-01 00:00:00

  • Biomimetic design processes in architecture: morphogenetic and evolutionary computational design.

    abstract::Design computation has profound impact on architectural design methods. This paper explains how computational design enables the development of biomimetic design processes specific to architecture, and how they need to be significantly different from established biomimetic processes in engineering disciplines. The pap...

    journal_title:Bioinspiration & biomimetics

    pub_type: 杂志文章

    doi:10.1088/1748-3182/7/1/015003

    authors: Menges A

    更新日期:2012-03-01 00:00:00

  • Nosehouse: heat-conserving ventilators based on nasal counterflow exchangers.

    abstract::Small birds and mammals commonly minimize respiratory heat loss with reciprocating counterflow exchangers in their nasal passageways. These animals extract heat from the air in an exhalation to warm those passageways and then use that heat to warm the subsequent inhalation. Although the near-constant volume of buildin...

    journal_title:Bioinspiration & biomimetics

    pub_type: 杂志文章

    doi:10.1088/1748-3182/4/4/046004

    authors: Vogel S

    更新日期:2009-12-01 00:00:00

  • On the energetics of quadrupedal running: predicting the metabolic cost of transport via a flexible-torso model.

    abstract::In this paper, the effect of torso flexibility on the energetics of quadrupedal bounding is examined in a template setting. Two reductive sagittal-plane models, one with a rigid, non-deformable torso and one with a flexible, unactuated torso are proposed. Both models feature non-trivial leg mass and inertia to capture...

    journal_title:Bioinspiration & biomimetics

    pub_type: 杂志文章

    doi:10.1088/1748-3190/10/5/056008

    authors: Cao Q,Poulakakis I

    更新日期:2015-09-03 00:00:00

  • Optimal propulsive flapping in Stokes flows.

    abstract::Swimming fish and flying insects use the flapping of fins and wings to generate thrust. In contrast, microscopic organisms typically deform their appendages in a wavelike fashion. Since a flapping motion with two degrees of freedom is able, in theory, to produce net forces from a time-periodic actuation at all Reynold...

    journal_title:Bioinspiration & biomimetics

    pub_type: 杂志文章

    doi:10.1088/1748-3182/9/1/016001

    authors: Was L,Lauga E

    更新日期:2014-03-01 00:00:00

  • A bioinspired soft manipulator for minimally invasive surgery.

    abstract::This paper introduces a novel, bioinspired manipulator for minimally invasive surgery (MIS). The manipulator is entirely composed of soft materials, and it has been designed to provide similar motion capabilities as the octopus's arm in order to reach the surgical target while exploiting its whole length to actively i...

    journal_title:Bioinspiration & biomimetics

    pub_type: 杂志文章

    doi:10.1088/1748-3190/10/3/035008

    authors: Ranzani T,Gerboni G,Cianchetti M,Menciassi A

    更新日期:2015-05-13 00:00:00

  • Nacre-mimetic bulk lamellar composites reinforced with high aspect ratio glass flakes.

    abstract::Nacre-mimetic epoxy matrix composites reinforced with readily available micron-sized high aspect ratio C-glass flakes were fabricated by a relatively simple, single-step, scalable, time, cost and man-power effective processing strategy: hot-press assisted slip casting (HASC). HASC enables the fabrication of preferenti...

    journal_title:Bioinspiration & biomimetics

    pub_type: 杂志文章

    doi:10.1088/1748-3190/12/1/016002

    authors: Guner SN,Dericioglu AF

    更新日期:2016-12-05 00:00:00

  • Bio-inspired annelid robot: a dielectric elastomer actuated soft robot.

    abstract::Biologically inspired robots with inherent softness and body compliance increasingly attract attention in the field of robotics. Aimed at solving existing problems with soft robots, regarding actuation technology and biological principles, this paper presents a soft bio-inspired annelid robot driven by dielectric elas...

    journal_title:Bioinspiration & biomimetics

    pub_type: 杂志文章

    doi:10.1088/1748-3190/aa50a5

    authors: Xu L,Chen HQ,Zou J,Dong WT,Gu GY,Zhu LM,Zhu XY

    更新日期:2017-01-31 00:00:00

  • Theoretical and numerical studies on a five-ray flexible pectoral fin during labriform swimming.

    abstract::Natural fish have evolved with an excellent swimming performance after millions of years. Based on the flexible features of the pectoral fin, this paper focuses on the kinematics and hydrodynamics of the fin when fish are swimming stably in still water in labriform mode. The locomotion mechanism based on the morpholog...

    journal_title:Bioinspiration & biomimetics

    pub_type: 杂志文章

    doi:10.1088/1748-3190/ab550e

    authors: Weng J,Zhu Y,Du X,Yang G,Hu D

    更新日期:2019-12-04 00:00:00

  • Biotemplate synthesis of monodispersed iron phosphate hollow microspheres.

    abstract::Monodispersed iron phosphate hollow microspheres with a high degree of crystallization were prepared through a facile in situ deposition method using rape pollen grains as a biotemplate. The functional group on the surface of the pollen grains could adsorb Fe(3+), which provided the nucleation sites for growth of iron...

    journal_title:Bioinspiration & biomimetics

    pub_type: 杂志文章

    doi:10.1088/1748-3182/5/1/016005

    authors: Cao F,Li D

    更新日期:2010-03-01 00:00:00

  • Energy efficient hopping with Hill-type muscle properties on segmented legs.

    abstract::The intrinsic muscular properties of biological muscles are the main source of stabilization during locomotion, and superior biological performance is obtained with low energy costs. Man-made actuators struggle to reach the same energy efficiency seen in biological muscles. Here, we compare muscle properties within a ...

    journal_title:Bioinspiration & biomimetics

    pub_type: 杂志文章

    doi:10.1088/1748-3190/11/3/036002

    authors: Rosendo A,Iida F

    更新日期:2016-04-12 00:00:00

  • Advantages of aquatic animals as models for bio-inspired drones over present AUV technology.

    abstract::Robotic systems are becoming more ubiquitous, whether on land, in the air, or in water. In the aquatic realm, aquatic drones including ROVs (remotely operated vehicles) and AUVs (autonomous underwater vehicles) have opened new opportunities to investigate the ocean depths. However, these technologies have limitations ...

    journal_title:Bioinspiration & biomimetics

    pub_type: 杂志文章

    doi:10.1088/1748-3190/ab5a34

    authors: Fish FE

    更新日期:2020-02-07 00:00:00

  • Biomimetic zinc oxide replica with structural color using butterfly (Ideopsis similis) wings as templates.

    abstract::Nano-structured colorful zinc oxide (ZnO) replicas were produced using the wings of the Ideopsis similis butterfly as templates. The ZnO replicas we obtained exhibit iridescence, which was clearly observed under an optical microscope (OM). Field emission scanning electron microscope analysis shows that all the microst...

    journal_title:Bioinspiration & biomimetics

    pub_type: 杂志文章

    doi:10.1088/1748-3182/1/3/003

    authors: Zhang W,Zhang D,Fan T,Ding J,Gu J,Guo Q,Ogawa H

    更新日期:2006-09-01 00:00:00

  • Emergence of behavior through morphology: a case study on an octopus inspired manipulator.

    abstract::The complex motion abilities of the Octopus vulgaris have been an intriguing research topic for biologists and roboticists alike. Various studies have been conducted on the underlying control architectures employed by these high dimensional biological organisms. Researchers have attempted to replicate these architectu...

    journal_title:Bioinspiration & biomimetics

    pub_type: 杂志文章

    doi:10.1088/1748-3190/ab1621

    authors: Thuruthel TG,Falotico E,Renda F,Flash T,Laschi C

    更新日期:2019-04-24 00:00:00

  • Fractal mechanism of basin of attraction in passive dynamic walking.

    abstract::Passive dynamic walking is a model that walks down a shallow slope without any control or input. This model has been widely used to investigate how humans walk with low energy consumption and provides design principles for energy-efficient biped robots. However, the basin of attraction is very small and thin and has a...

    journal_title:Bioinspiration & biomimetics

    pub_type: 杂志文章

    doi:10.1088/1748-3190/ab9283

    authors: Okamoto K,Aoi S,Obayashi I,Kokubu H,Senda K,Tsuchiya K

    更新日期:2020-07-15 00:00:00