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Published May 2012 | Published
Journal Article Open

Modeling Turbulent Hydraulic Fracture Near a Free Surface

Abstract

Motivated by observations of the subglacial drainage of water, we consider a hydraulic fracture problem in which the crack grows parallel to a free surface, subject to fully turbulent fluid flow. Using a hybrid Chebyshev/series-minimization numerical approach, we solve for the pressure profile, crack opening displacement, and crack growth rate for a crack that begins relatively short but eventually becomes long compared with the distance to the free surface. We plot nondimensionalized results for a variety of different times, corresponding with different fracture lengths, and find substantial differences when free-surface effects are important.

Additional Information

© 2012 ASME. Received 19 September 2011; revised 11 January 2012; accepted manuscript posted 6 February 2012; published 4 April 2012. This research was supported by National Science Foundation OPP Grant No. ANT-0739444 to Harvard University and a Mendenhall Postdoctoral Fellowship of the United States Geological Survey to VCT.

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August 19, 2023
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