Pressure field generated in porous medium by air jet injected through the surface

Alexander Yarin, K. Schuster, E. Zussman

Research output: Contribution to journalArticle

Abstract

Efficient detection of hidden volatile substances in soil requires understanding the mechanisms governing their retention or transport through porous medium. In order to increase the mass transfer rate of the hidden volatile substances, it was suggested in this work to apply forced-convection (filtration) in addition to diffusion by using a gas jet impingement vertically onto the soil (a granular bed; sand). Pressure distribution in the granular bed is studied analytically using the methods from the theory of functions of complex variables. The filtration/granular bed interaction involves the soil permeability, grain size, and jet pressure and impinging velocity. Soil failure due to the filtration-imposed forces is formulated as the Mohr-Coulomb criterion, which involves the angle of internal friction and the cohesion of grains. A comprehensive experimental investigation of the filtration pressure distribution and the jet-driven erosion of granular material is presented here. The experiments were conducted by combining a special pressure-measurement technique allowing for a simultaneous accurate detection of the crater onset and the subsequent evolution of the granular bed. The theoretical predictions are compared to the measured pressure field in the granular bed.

Original languageEnglish
Article number046601
JournalPhysics of Fluids
Volume31
Issue number4
DOIs
Publication statusPublished - 2019 Apr 1

Fingerprint

air jets
pressure distribution
beds
soils
jet impingement
complex variables
gas jets
cohesion
forced convection
granular materials
internal friction
pressure measurement
craters
sands
mass transfer
erosion
permeability
grain size
predictions
interactions

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Pressure field generated in porous medium by air jet injected through the surface. / Yarin, Alexander; Schuster, K.; Zussman, E.

In: Physics of Fluids, Vol. 31, No. 4, 046601, 01.04.2019.

Research output: Contribution to journalArticle

Yarin, Alexander ; Schuster, K. ; Zussman, E. / Pressure field generated in porous medium by air jet injected through the surface. In: Physics of Fluids. 2019 ; Vol. 31, No. 4.
@article{e43bd68f1dca4c31aebada81a8920039,
title = "Pressure field generated in porous medium by air jet injected through the surface",
abstract = "Efficient detection of hidden volatile substances in soil requires understanding the mechanisms governing their retention or transport through porous medium. In order to increase the mass transfer rate of the hidden volatile substances, it was suggested in this work to apply forced-convection (filtration) in addition to diffusion by using a gas jet impingement vertically onto the soil (a granular bed; sand). Pressure distribution in the granular bed is studied analytically using the methods from the theory of functions of complex variables. The filtration/granular bed interaction involves the soil permeability, grain size, and jet pressure and impinging velocity. Soil failure due to the filtration-imposed forces is formulated as the Mohr-Coulomb criterion, which involves the angle of internal friction and the cohesion of grains. A comprehensive experimental investigation of the filtration pressure distribution and the jet-driven erosion of granular material is presented here. The experiments were conducted by combining a special pressure-measurement technique allowing for a simultaneous accurate detection of the crater onset and the subsequent evolution of the granular bed. The theoretical predictions are compared to the measured pressure field in the granular bed.",
author = "Alexander Yarin and K. Schuster and E. Zussman",
year = "2019",
month = "4",
day = "1",
doi = "10.1063/1.5091016",
language = "English",
volume = "31",
journal = "Physics of Fluids",
issn = "1070-6631",
publisher = "American Institute of Physics",
number = "4",

}

TY - JOUR

T1 - Pressure field generated in porous medium by air jet injected through the surface

AU - Yarin, Alexander

AU - Schuster, K.

AU - Zussman, E.

PY - 2019/4/1

Y1 - 2019/4/1

N2 - Efficient detection of hidden volatile substances in soil requires understanding the mechanisms governing their retention or transport through porous medium. In order to increase the mass transfer rate of the hidden volatile substances, it was suggested in this work to apply forced-convection (filtration) in addition to diffusion by using a gas jet impingement vertically onto the soil (a granular bed; sand). Pressure distribution in the granular bed is studied analytically using the methods from the theory of functions of complex variables. The filtration/granular bed interaction involves the soil permeability, grain size, and jet pressure and impinging velocity. Soil failure due to the filtration-imposed forces is formulated as the Mohr-Coulomb criterion, which involves the angle of internal friction and the cohesion of grains. A comprehensive experimental investigation of the filtration pressure distribution and the jet-driven erosion of granular material is presented here. The experiments were conducted by combining a special pressure-measurement technique allowing for a simultaneous accurate detection of the crater onset and the subsequent evolution of the granular bed. The theoretical predictions are compared to the measured pressure field in the granular bed.

AB - Efficient detection of hidden volatile substances in soil requires understanding the mechanisms governing their retention or transport through porous medium. In order to increase the mass transfer rate of the hidden volatile substances, it was suggested in this work to apply forced-convection (filtration) in addition to diffusion by using a gas jet impingement vertically onto the soil (a granular bed; sand). Pressure distribution in the granular bed is studied analytically using the methods from the theory of functions of complex variables. The filtration/granular bed interaction involves the soil permeability, grain size, and jet pressure and impinging velocity. Soil failure due to the filtration-imposed forces is formulated as the Mohr-Coulomb criterion, which involves the angle of internal friction and the cohesion of grains. A comprehensive experimental investigation of the filtration pressure distribution and the jet-driven erosion of granular material is presented here. The experiments were conducted by combining a special pressure-measurement technique allowing for a simultaneous accurate detection of the crater onset and the subsequent evolution of the granular bed. The theoretical predictions are compared to the measured pressure field in the granular bed.

UR - http://www.scopus.com/inward/record.url?scp=85064477473&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85064477473&partnerID=8YFLogxK

U2 - 10.1063/1.5091016

DO - 10.1063/1.5091016

M3 - Article

AN - SCOPUS:85064477473

VL - 31

JO - Physics of Fluids

JF - Physics of Fluids

SN - 1070-6631

IS - 4

M1 - 046601

ER -