Experimental study on effect of vegetation vibration on blown sand

Keiko Udo, Satoshi Takewaka, Hitoshi Nishimura

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Wind tunnel experiments were conducted to investigate the effects of vegetation, in particular beach grass, on blown sand in terms of elevation changes of a mobile sand bed, distributions of mean wind velocity, and wind fields for various vegetation canopies, and also displacement amplitude and frequency of vegetation leaf sway in a flexible vegetation canopy. The sways of leaves increase the air turbulence within and above a canopy of flexible vegetation, which creates a complicated interaction between the mean wind velocity and the air turbulence. The frequency of sway of vegetation leaf becomes larger where the bed is accumulated and the streaklines fluctuate. These results indicate that the frequency of the sway increases the air turbulence and reduces the mean wind velocity, and consequently the bed is accumulated.

Original languageEnglish
Title of host publicationProceedings of the 29th International Conference on Coastal Engineering 2004, ICCE 2004
EditorsJane McKee Smith, Jane McKee Smith
PublisherAmerican Society of Civil Engineers (ASCE)
Pages2927-2939
Number of pages13
ISBN (Electronic)9789812562982, 9789812562982
DOIs
Publication statusPublished - 2005 Apr 1
Externally publishedYes
Event29th International Conference on Coastal Engineering, ICCE 2004 - Lisbon, Portugal
Duration: 2004 Sep 192004 Sep 24

Publication series

NameProceedings of the Coastal Engineering Conference
Volume2005-January
ISSN (Print)0161-3782

Other

Other29th International Conference on Coastal Engineering, ICCE 2004
Country/TerritoryPortugal
CityLisbon
Period04/9/1904/9/24

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Ocean Engineering
  • Oceanography

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