Abstract
| Language | English |
|---|---|
| Pages | 415-431 |
| Number of pages | 17 |
| Journal | Journal of Fluid Mechanics |
| Volume | 584 |
| DOIs | |
| Publication status | Published - 2007 |
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Keywords
- gravity
- substrates
- statistics
- steady-state solutions
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Gravity currents over fractured substrates in a porous medium. / Pritchard, David.
In: Journal of Fluid Mechanics, Vol. 584, 2007, p. 415-431.Research output: Contribution to journal › Article
TY - JOUR
T1 - Gravity currents over fractured substrates in a porous medium
AU - Pritchard, David
PY - 2007
Y1 - 2007
N2 - We consider the behaviour of a gravity current in a porous medium when the horizontal surface along which it spreads is punctuated either by narrow fractures or by permeable regions of limited extent. We derive steady-state solutions for the current, and show that these form part of a long-time asymptotic description which may also include a self-similar ‘leakage current’ propagating beyond the fractured region with a length proportional to t1/2. We discuss the conditions under which a current can be completely trapped by a permeable region or a series of fractures.
AB - We consider the behaviour of a gravity current in a porous medium when the horizontal surface along which it spreads is punctuated either by narrow fractures or by permeable regions of limited extent. We derive steady-state solutions for the current, and show that these form part of a long-time asymptotic description which may also include a self-similar ‘leakage current’ propagating beyond the fractured region with a length proportional to t1/2. We discuss the conditions under which a current can be completely trapped by a permeable region or a series of fractures.
KW - gravity
KW - substrates
KW - statistics
KW - steady-state solutions
U2 - 10.1017/S0022112007006623
DO - 10.1017/S0022112007006623
M3 - Article
VL - 584
SP - 415
EP - 431
JO - Journal of Fluid Mechanics
T2 - Journal of Fluid Mechanics
JF - Journal of Fluid Mechanics
SN - 0022-1120
ER -