Spreading of gravity plumes on an incline

Sung-Uk Choi, Marcelo H. Garcia

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

Gravity plumes are buoyancy-driven underflows in a deep ambient fluid. We develop spreading laws for gravity plumes which propagate laterally as well as longitudinally on a uniform slope. Examples of such flows are turbidity currents in the ocean and ignimbrite flows in the atmosphere. Laboratory experiments with a large tank, employing saline density currents, coupled with dimensional analysis, have been used to develop simple expressions for spreading rates of three-dimensional flows on sloping beds. Characteristic length and time are determined by the flow discharge and the buoyancy flux at the inlet. By knowing the initial width of the flow, the spreading laws can be used to estimate the maximum width of the current at different times as well as the longitudinal spreading rate. Predictions for flows compare favorably against observations.

Original languageEnglish
Pages (from-to)221-237
Number of pages17
JournalCoastal Engineering Journal
Volume43
Issue number4
DOIs
Publication statusPublished - 2001 Jan 1

Fingerprint

Buoyancy
Gravity
Gravitation
Turbidity
Discharge (fluid mechanics)
Current density
Fluxes
Fluids
Three-dimensional Flow
Dimensional Analysis
Ocean
Experiments
Atmosphere
Slope
Fluid
Prediction
Estimate
Experiment

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Modelling and Simulation
  • Ocean Engineering

Cite this

Choi, Sung-Uk ; Garcia, Marcelo H. / Spreading of gravity plumes on an incline. In: Coastal Engineering Journal. 2001 ; Vol. 43, No. 4. pp. 221-237.
@article{38cd1e6a8c8c47b3bf3e9306dde12cd9,
title = "Spreading of gravity plumes on an incline",
abstract = "Gravity plumes are buoyancy-driven underflows in a deep ambient fluid. We develop spreading laws for gravity plumes which propagate laterally as well as longitudinally on a uniform slope. Examples of such flows are turbidity currents in the ocean and ignimbrite flows in the atmosphere. Laboratory experiments with a large tank, employing saline density currents, coupled with dimensional analysis, have been used to develop simple expressions for spreading rates of three-dimensional flows on sloping beds. Characteristic length and time are determined by the flow discharge and the buoyancy flux at the inlet. By knowing the initial width of the flow, the spreading laws can be used to estimate the maximum width of the current at different times as well as the longitudinal spreading rate. Predictions for flows compare favorably against observations.",
author = "Sung-Uk Choi and Garcia, {Marcelo H.}",
year = "2001",
month = "1",
day = "1",
doi = "10.1142/S0578563401000359",
language = "English",
volume = "43",
pages = "221--237",
journal = "Coastal Engineering in Japan",
issn = "0578-5634",
publisher = "World Scientific Publishing Co. Pte Ltd",
number = "4",

}

Spreading of gravity plumes on an incline. / Choi, Sung-Uk; Garcia, Marcelo H.

In: Coastal Engineering Journal, Vol. 43, No. 4, 01.01.2001, p. 221-237.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Spreading of gravity plumes on an incline

AU - Choi, Sung-Uk

AU - Garcia, Marcelo H.

PY - 2001/1/1

Y1 - 2001/1/1

N2 - Gravity plumes are buoyancy-driven underflows in a deep ambient fluid. We develop spreading laws for gravity plumes which propagate laterally as well as longitudinally on a uniform slope. Examples of such flows are turbidity currents in the ocean and ignimbrite flows in the atmosphere. Laboratory experiments with a large tank, employing saline density currents, coupled with dimensional analysis, have been used to develop simple expressions for spreading rates of three-dimensional flows on sloping beds. Characteristic length and time are determined by the flow discharge and the buoyancy flux at the inlet. By knowing the initial width of the flow, the spreading laws can be used to estimate the maximum width of the current at different times as well as the longitudinal spreading rate. Predictions for flows compare favorably against observations.

AB - Gravity plumes are buoyancy-driven underflows in a deep ambient fluid. We develop spreading laws for gravity plumes which propagate laterally as well as longitudinally on a uniform slope. Examples of such flows are turbidity currents in the ocean and ignimbrite flows in the atmosphere. Laboratory experiments with a large tank, employing saline density currents, coupled with dimensional analysis, have been used to develop simple expressions for spreading rates of three-dimensional flows on sloping beds. Characteristic length and time are determined by the flow discharge and the buoyancy flux at the inlet. By knowing the initial width of the flow, the spreading laws can be used to estimate the maximum width of the current at different times as well as the longitudinal spreading rate. Predictions for flows compare favorably against observations.

UR - http://www.scopus.com/inward/record.url?scp=0035662052&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0035662052&partnerID=8YFLogxK

U2 - 10.1142/S0578563401000359

DO - 10.1142/S0578563401000359

M3 - Article

AN - SCOPUS:0035662052

VL - 43

SP - 221

EP - 237

JO - Coastal Engineering in Japan

JF - Coastal Engineering in Japan

SN - 0578-5634

IS - 4

ER -