NDLI: Pressure Oscillation Effects on the Saffman-Taylor Instability

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Pure and applied geophysics : Volume 160, Issue 3-4, March 2003

Pure and applied geophysics : Volume 160, Issue 1-2, January 2003

Pure and applied geophysics : Volume 159

Pure and applied geophysics : Volume 158

Pure and applied geophysics : Volume 157

Pure and applied geophysics : Volume 156

Pure and applied geophysics : Volume 155

Pure and applied geophysics : Volume 154

Pure and applied geophysics : Volume 153

Pure and applied geophysics : Volume 152

Pure and applied geophysics : Volume 151

Pure and applied geophysics : Volume 150

Pure and applied geophysics : Volume 149

Pressure Oscillation Effects on the Saffman-Taylor Instability

Content Provider	Springer Nature Link
Author	Gland, N. Pisarenko, D.
Copyright Year	2003
Abstract	— We studied experimentally the stability of the front between two immiscible fluids in a Hele-Shaw cell, which consists of two parallel glass plates separated by a narrow spacing. The fluid flow in a Hele-Shaw cell is governed by the Laplace's equation (pressure field) and Darcy's law (fluid transport), which makes of this experimental setup a two-dimensional analog of a porous medium (FABER, 1997). SAFFMAN and TAYLOR (1958) demonstrated that when the injected fluid is less viscous than the displaced one, the front between the fluids can be unstable and fingers may develop along the interface. We investigated the possibility of influencing the development of the Saffman-Taylor instability by modulating the injection pressure with weak periodic oscillations of low frequency (5 to 15 Hz). A series of experiments were performed, in which the evolution of the interface between the injected air and the displaced silicon oil was recorded with the help of a numerical photo camera. We observed that the oscillations of the injection pressure inhibit the development of fingers. We quantified the observed stabilization effect by performing a harmonic analysis of the shape of the front, and suggested an interpretation in terms of “stiffening” of the interface.
Starting Page	977
Ending Page	988
Page Count	12
File Format	PDF
ISSN	00334553
Journal	Pure and applied geophysics
Volume Number	160
Issue Number	5
e-ISSN	14209136
Language	English
Publisher	Birkhäuser Verlag
Publisher Date	2003-05-01
Publisher Place	Basel
Access Restriction	One Nation One Subscription (ONOS)
Content Type	Text
Resource Type	Article
Subject	Geochemistry and Petrology Geophysics

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