Mean Flow and Turbulence Characteristics in Pool-Riffle Structures

José F. Rodríguez, Carlos M. García, Marcelo H. García

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

Abstract

Channelization limits the geomorphological and biological diversity of many urban streams. Whenever the existing infrastructure prevents re-alignment of the channel planform, in-channel structures of the pool-riffle type offer an alternative means to provide some degree of variability in the flow pattern. This paper presents mean flow and turbulence measurements obtained on a physical model of pool-riffle structures designed to restore low gradient streams in heavily urbanized areas. The data collected include high-resolution 3D velocities as well as water surface elevations for different flow conditions. The results show that the flow is highly three-dimensional, and that the effect of the structures is more important for low flow conditions. Also, flow patterns resemble that of natural pool-riffle sequences. Implications for sediment transport, bed and bank morphology and aquatic habitat are analyzed.

Original languageEnglish (US)
Title of host publicationHydraulic Measurements and Experimental Methods
EditorsT.L. Wahl, C.A. Pugh, K.A. Oberg, T.B. Vermeyen, T.L. Wahl, C.A. Pugh, K.A. Oberg, T.B. Vermeyen
Pages790-800
Number of pages11
StatePublished - Dec 1 2002
EventHydraulic Measurements and Experimental Methods 2002 - Estes Park, CO, United States
Duration: Jul 28 2002Aug 1 2002

Publication series

NameHydraulic Measurements and Experimental Methods

Other

OtherHydraulic Measurements and Experimental Methods 2002
CountryUnited States
CityEstes Park, CO
Period7/28/028/1/02

ASJC Scopus subject areas

  • Instrumentation
  • Engineering(all)

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