Flow model of hyperconcentrated sand-water mixtures

Haruyuki Hashimoto, Muneo Hirano

Research output: Contribution to conferencePaper

10 Citations (Scopus)

Abstract

A nondimensional parameter governing fluid-solid mixture flow is obtained from the comparison between inertia and intergranular-stress terms in the momentum equations. Using the nondimensional parameter, a nondimensional distance from the bed is introduced for investigating velocity profiles of these flows. The flow structure of granular and inertial sublayers is found near the bed. The former sublayer has a linear velocity profile due to the major role of intergranular stresses, while the latter sublayer has a logarithmic velocity profile due to the inertial forces. The flow model considering these sublayers is proposed and predicts the linear and logarithmic profiles theoretically. Surface velocity and average velocity are determined from the theoretical velocity profiles and compared with the experimental data.

Original languageEnglish
Pages464-473
Number of pages10
Publication statusPublished - Jan 1 1997
EventProceedings of the 1997 1st International Conference on Debris-Flow Hazards Mitigation: Mechanics, Prediction, and Assessment - San Francisco, CA, USA
Duration: Aug 7 1997Aug 9 1997

Other

OtherProceedings of the 1997 1st International Conference on Debris-Flow Hazards Mitigation: Mechanics, Prediction, and Assessment
CitySan Francisco, CA, USA
Period8/7/978/9/97

Fingerprint

velocity profile
Sand
sand
Water
water
flow structure
inertia
momentum
Flow structure
fluid
Momentum
Fluids
parameter

All Science Journal Classification (ASJC) codes

  • Water Science and Technology
  • Geotechnical Engineering and Engineering Geology
  • Earth-Surface Processes

Cite this

Hashimoto, H., & Hirano, M. (1997). Flow model of hyperconcentrated sand-water mixtures. 464-473. Paper presented at Proceedings of the 1997 1st International Conference on Debris-Flow Hazards Mitigation: Mechanics, Prediction, and Assessment, San Francisco, CA, USA, .

Flow model of hyperconcentrated sand-water mixtures. / Hashimoto, Haruyuki; Hirano, Muneo.

1997. 464-473 Paper presented at Proceedings of the 1997 1st International Conference on Debris-Flow Hazards Mitigation: Mechanics, Prediction, and Assessment, San Francisco, CA, USA, .

Research output: Contribution to conferencePaper

Hashimoto, H & Hirano, M 1997, 'Flow model of hyperconcentrated sand-water mixtures', Paper presented at Proceedings of the 1997 1st International Conference on Debris-Flow Hazards Mitigation: Mechanics, Prediction, and Assessment, San Francisco, CA, USA, 8/7/97 - 8/9/97 pp. 464-473.
Hashimoto H, Hirano M. Flow model of hyperconcentrated sand-water mixtures. 1997. Paper presented at Proceedings of the 1997 1st International Conference on Debris-Flow Hazards Mitigation: Mechanics, Prediction, and Assessment, San Francisco, CA, USA, .
Hashimoto, Haruyuki ; Hirano, Muneo. / Flow model of hyperconcentrated sand-water mixtures. Paper presented at Proceedings of the 1997 1st International Conference on Debris-Flow Hazards Mitigation: Mechanics, Prediction, and Assessment, San Francisco, CA, USA, .10 p.
@conference{0bd5752d6756482b9ba5b141d32d7146,
title = "Flow model of hyperconcentrated sand-water mixtures",
abstract = "A nondimensional parameter governing fluid-solid mixture flow is obtained from the comparison between inertia and intergranular-stress terms in the momentum equations. Using the nondimensional parameter, a nondimensional distance from the bed is introduced for investigating velocity profiles of these flows. The flow structure of granular and inertial sublayers is found near the bed. The former sublayer has a linear velocity profile due to the major role of intergranular stresses, while the latter sublayer has a logarithmic velocity profile due to the inertial forces. The flow model considering these sublayers is proposed and predicts the linear and logarithmic profiles theoretically. Surface velocity and average velocity are determined from the theoretical velocity profiles and compared with the experimental data.",
author = "Haruyuki Hashimoto and Muneo Hirano",
year = "1997",
month = "1",
day = "1",
language = "English",
pages = "464--473",
note = "Proceedings of the 1997 1st International Conference on Debris-Flow Hazards Mitigation: Mechanics, Prediction, and Assessment ; Conference date: 07-08-1997 Through 09-08-1997",

}

TY - CONF

T1 - Flow model of hyperconcentrated sand-water mixtures

AU - Hashimoto, Haruyuki

AU - Hirano, Muneo

PY - 1997/1/1

Y1 - 1997/1/1

N2 - A nondimensional parameter governing fluid-solid mixture flow is obtained from the comparison between inertia and intergranular-stress terms in the momentum equations. Using the nondimensional parameter, a nondimensional distance from the bed is introduced for investigating velocity profiles of these flows. The flow structure of granular and inertial sublayers is found near the bed. The former sublayer has a linear velocity profile due to the major role of intergranular stresses, while the latter sublayer has a logarithmic velocity profile due to the inertial forces. The flow model considering these sublayers is proposed and predicts the linear and logarithmic profiles theoretically. Surface velocity and average velocity are determined from the theoretical velocity profiles and compared with the experimental data.

AB - A nondimensional parameter governing fluid-solid mixture flow is obtained from the comparison between inertia and intergranular-stress terms in the momentum equations. Using the nondimensional parameter, a nondimensional distance from the bed is introduced for investigating velocity profiles of these flows. The flow structure of granular and inertial sublayers is found near the bed. The former sublayer has a linear velocity profile due to the major role of intergranular stresses, while the latter sublayer has a logarithmic velocity profile due to the inertial forces. The flow model considering these sublayers is proposed and predicts the linear and logarithmic profiles theoretically. Surface velocity and average velocity are determined from the theoretical velocity profiles and compared with the experimental data.

UR - http://www.scopus.com/inward/record.url?scp=0030700996&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0030700996&partnerID=8YFLogxK

M3 - Paper

AN - SCOPUS:0030700996

SP - 464

EP - 473

ER -