Rheological properties of simulated debris flows in the laboratory environment

Chi Hai Ling, Cheng lung Chen, Chyan Deng Jan

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

1 Citation (Scopus)

Abstract

Steady debris flows with or without a snout are simulated in a 'conveyor-belt' flume using dry glass spheres of a uniform size, 5 or 14 mm in diameter, and their rheological properties described quantitatively in constants in a generalized viscoplastic fluid (GVF) model. Close agreement of the measured velocity profiles with the theoretical ones obtained from the GVF model strongly supports the validity of a GVF model based on the continuum-mechanics approach. Further comparisons of the measured and theoretical velocity profiles along with empirical relations among the shear stress, the normal stress, and the shear rate developed from the 'ring-shear' apparatus determine the values of the rheological parameters in the GVF model, namely the flow-behavior index, the consistency index, and the cross-consistency index. Critical issues in the evaluation of such rheological parameters using the conveyor-belt flume and the ring-shear apparatus are thus addressed in this study.

Original languageEnglish
Title of host publicationHydraulics/Hydrology of Arid Lands
EditorsRichard H. French
PublisherPubl by ASCE
Pages218-224
Number of pages7
ISBN (Print)0872627713
Publication statusPublished - 1990 Dec 1
EventProceedings of the International Symposium on Hydraulics/Hydrology of Arid Lands and 1990 National Conference on Hydraulic Engineering - San Diego, CA, USA
Duration: 1990 Jul 301990 Aug 2

Publication series

NameHydraulics/Hydrology of Arid Lands

Other

OtherProceedings of the International Symposium on Hydraulics/Hydrology of Arid Lands and 1990 National Conference on Hydraulic Engineering
CitySan Diego, CA, USA
Period90-07-3090-08-02

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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  • Cite this

    Ling, C. H., Chen, C. L., & Jan, C. D. (1990). Rheological properties of simulated debris flows in the laboratory environment. In R. H. French (Ed.), Hydraulics/Hydrology of Arid Lands (pp. 218-224). (Hydraulics/Hydrology of Arid Lands). Publ by ASCE.