Control of sand movement on model dune by fence installation - Experimental study by visualization and LDV

Yusuke Sakamoto, Shota Shimazu, Takahiro Tsukahara, Makoto Yamamoto, Yasuo Kawaguchi

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Recent desertification has been one of serious environmental issues. It is important to elucidate mechanisms of the sand movement from sand dunes with considering the relations between the dune shape and the turbulent air flow. This relation can be applied to predict and prevent the desertification. In this study, the shape of the dune surface and the erosion rate are measured by the method of laser-sheet visualization. Laser-doppler velocimetry (LDV) has been used for turbulence measurement. Effects of an installed fence on the erosion rate are discussed with emphasis on influences of its position and height. The erosion has been either suppressed or enhanced by the fence. Since there exist two strong erosion areas due to the backflow and wake induced by the fence. In the present experimental conditions, the top of the dune is the most suitable position of the fence for preventing erosion.

Original languageEnglish
Title of host publication6th International Symposium on Multiphase flow, Heat Mass Transfer and Energy Conversion
Pages95-100
Number of pages6
DOIs
Publication statusPublished - 2010
Event6th International Symposium on Multiphase flow, Heat Mass Transfer and Energy Conversion - Xian, China
Duration: 11 Jul 200915 Jul 2009

Publication series

NameAIP Conference Proceedings
Volume1207
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference6th International Symposium on Multiphase flow, Heat Mass Transfer and Energy Conversion
Country/TerritoryChina
CityXian
Period11/07/0915/07/09

Keywords

  • Dune
  • Fence
  • Gas-solid two phase flow
  • LDV
  • Sand movement
  • Turbulent flow
  • Visualization

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