Flow Visualization of Water Strider Locomotion

DOI

Bibliographic Information

Other Title
  • アメンボの水上歩行に関する流れの可視化

Description

Water striders Gerridae are insects of characteristic length 1 cm and weight 10 dynes that reside on the surface of ponds, rivers, and the open ocean. Their weight is supported by the surface tension force generated by curvature of the free surface, and they propel themselves by driving their central pair of hydrophobic legs in a sculling motion. Previous experiments reveal that the hydrodynamic propulsion of the water strider relies on transferring momentum to the underlying fluid through hemispherical vortices and capillary waves shed by its driving legs. The aim of this paper is to quantify the exchange of momentum between a water strider and the fluid underneath during the insect's rapid stroke. The technique of digital particle image velocimetry (DPIV) is used to visualize water flow and quantify the effect of water strider's rapid leg stroke on water movement and hence to estimate propulsion efficiency of water strider.

Journal

Keywords

Details 詳細情報について

  • CRID
    1390001205646130944
  • NII Article ID
    130005025247
  • DOI
    10.11511/jacc.51.0.63.0
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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