Analysis of force acting on sand particles by using a high-speed digital camera

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

3 Scopus citations

Abstract

Wind tunnel experiments were carried out to investigate the saltation of sand particles in the atmospheric boundary layer. A high-speed digital camera was employed to record the saltating sand particles' trajectories. The overlapping particle tracking velocimetry algorithm was introduced to process the consecutive images. By the advantages of high-speed digital camera, motion parameters of single sand particle can be obtained much easier and with a high temporal resolution than that of conventional photography. Velocities and accelerations of sand particles along the whole trajectory were calculated. Furthermore, proportions of forces acting on the saltating sand particles were analyzed to learn their relative significance. The results showed that, besides gravity, the aerodynamic drag was the main force that affected the motion of sand particles.

Original languageEnglish
Title of host publicationProceedings - 2010 3rd International Congress on Image and Signal Processing, CISP 2010
Pages2501-2504
Number of pages4
DOIs
StatePublished - 2010
Event2010 3rd International Congress on Image and Signal Processing, CISP 2010 - Yantai, China
Duration: 16 Oct 201018 Oct 2010

Publication series

NameProceedings - 2010 3rd International Congress on Image and Signal Processing, CISP 2010
Volume5

Conference

Conference2010 3rd International Congress on Image and Signal Processing, CISP 2010
Country/TerritoryChina
CityYantai
Period16/10/1018/10/10

Keywords

  • Aeolian sand
  • Force analysis
  • High-speed digital camera
  • Image precess

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