Hydraulic characteristics of flow over a highly permeable porous structure

Jan Mou Leu, Wei Che Huang, Hsun Chuan Chan

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

1 Citation (Scopus)

Abstract

The present study is carry out to investigate the velocity fields and turbulence characteristics of the flow over permeable structures by channel experiment in low water level. Detailed measurements of the time-averaged velocity components, turbulence intensity components of permeable and solid structures are taken by the acoustic doppler velocimeter (ADV). The characteristic feature of porous medium is permeable, and the vertical distributions of time-averaged velocities above permeable structures are more uniform than solid structure due to the slip velocity at the fluid/porous interface. The turbulence intensity above structure with large porosity are slightly greater than small porosity structure, and the permeable structures have smaller turbulence intensity than solid structure around the structures. The results show that the porous medium reduces the turbulence intensity, and then reduce the scour to structures.

Original languageEnglish
Title of host publicationWorld Environmental and Water Resources Congress 2008
Subtitle of host publicationAhupua'a - Proceedings of the World Environmental and Water Resources Congress 2008
DOIs
Publication statusPublished - 2008 Dec 1
EventWorld Environmental and Water Resources Congress 2008: Ahupua'a - Honolulu, HI, United States
Duration: 2008 May 122008 May 16

Publication series

NameWorld Environmental and Water Resources Congress 2008: Ahupua'a - Proceedings of the World Environmental and Water Resources Congress 2008
Volume316

Other

OtherWorld Environmental and Water Resources Congress 2008: Ahupua'a
CountryUnited States
CityHonolulu, HI
Period08-05-1208-05-16

All Science Journal Classification (ASJC) codes

  • Management, Monitoring, Policy and Law
  • Water Science and Technology
  • Pollution

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  • Cite this

    Leu, J. M., Huang, W. C., & Chan, H. C. (2008). Hydraulic characteristics of flow over a highly permeable porous structure. In World Environmental and Water Resources Congress 2008: Ahupua'a - Proceedings of the World Environmental and Water Resources Congress 2008 (World Environmental and Water Resources Congress 2008: Ahupua'a - Proceedings of the World Environmental and Water Resources Congress 2008; Vol. 316). https://doi.org/10.1061/40976(316)211